Microsoft
Microsoft 365 Apps for Windows (Office 365)
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2609 (20430.20180)
- Release date
- October 13, 2026
- Security status
- 100 high-severity CVEs tracked in the last 90 days. Current version impact is unclear.
Source
Vendor Release Information
Public release notes are linked for the latest stored release.
Release history
See the latest published releases stored for this product.
| Version | Published | Notes |
|---|---|---|
| 2609 (20430.20180) | 2026-10-13 | Release Notes |
| 2608 (20326.20142) | 2026-09-08 | Release Notes |
| 2607 (20228.20188) | 2026-08-11 | Release Notes |
| 2606 (20131.20152) | 2026-07-14 | Release Notes |
| 2605 (20026.20166) | 2026-06-09 | Release Notes |
| 2604 (19929.20172) | 2026-05-14 | Release Notes |
| 2604 (19929.20162) | 2026-05-12 | Release Notes |
| 2603 (19822.20180) | 2026-04-14 | Release Notes |
| 2602 (19725.20170) | 2026-03-10 | Release Notes |
Vulnerability tracking
versionPing monitors CVEs for this product. Matching CVEs are listed below. We only display CVEs with a CVSS score of 7.0 or higher that were published within the last 90 days.
Affected status is inferred from published affected version ranges where available. Always verify against the vendor advisory before making production decisions.
| CVE | Severity | Published | Status | Summary |
|---|---|---|---|---|
| CVE-2026-108451 | HIGH (8.8) | 2026-10-15 | Current versionunclear | Numeric truncation error in Microsoft Office Word allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-108450 | HIGH (8.8) | 2026-10-15 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-108449 | HIGH (8.8) | 2026-10-15 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-108448 | HIGH (7.5) | 2026-10-15 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-108447 | HIGH (8.8) | 2026-10-15 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-108446 | HIGH (8.8) | 2026-10-15 | Current versionunclear | Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-108445 | HIGH (8.8) | 2026-10-15 | Current versionunclear | Stack-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-108444 | HIGH (8.8) | 2026-10-15 | Current versionunclear | Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-108443 | HIGH (8.8) | 2026-10-15 | Current versionunclear | Off-by-one error in Microsoft Office Word allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-108442 | HIGH (8.8) | 2026-10-15 | Current versionunclear | Use after free in Microsoft Office Word allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-108441 | HIGH (8.8) | 2026-10-15 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-108440 | HIGH (8.8) | 2026-10-15 | Current versionunclear | Stack-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-108439 | HIGH (8.8) | 2026-10-15 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-108437 | HIGH (8.8) | 2026-10-15 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-108433 | HIGH (7.8) | 2026-10-15 | Current versionunclear | Reliance on untrusted inputs in a security decision in Microsoft Office Word allows an unauthorized attacker to bypass a security feature locally. Affected versions
|
| CVE-2026-108432 | HIGH (8.8) | 2026-10-15 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-108431 | HIGH (8.8) | 2026-10-15 | Current versionunclear | Stack-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-108430 | HIGH (8.8) | 2026-10-15 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-108429 | HIGH (8.8) | 2026-10-15 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-108428 | HIGH (8.8) | 2026-10-15 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-108427 | HIGH (8.8) | 2026-10-15 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-108426 | HIGH (8.8) | 2026-10-15 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97781 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Improper neutralization of special elements used in a command ('command injection') in Microsoft Office OneNote allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-100212 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-100210 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-100209 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-100211 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97745 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97768 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97772 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Double free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97775 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97763 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97741 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97004 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97746 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97742 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97738 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97757 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97011 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Use of uninitialized resource in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97762 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Out-of-bounds write in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97777 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97010 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97773 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97769 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97008 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Buffer underwrite ('buffer underflow') in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97756 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97007 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97748 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-88207 | HIGH (7.5) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office PowerPoint allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-88210 | HIGH (7.8) | 2026-10-13 | Current versionunclear | Reliance on untrusted inputs in a security decision in Microsoft Office Word allows an unauthorized attacker to bypass a security feature locally. Affected versions
|
| CVE-2026-88186 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-88185 | HIGH (8.1) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-85340 | HIGH (7.8) | 2026-10-13 | Current versionunclear | Use after free in Microsoft Office Click-To-Run allows an authorized attacker to elevate privileges locally. Affected versions
|
| CVE-2026-88144 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Use after free in Microsoft Office PowerPoint allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-70242 | CRITICAL (9.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-70215 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Use after free in Microsoft Office PowerPoint allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-70281 | HIGH (7.5) | 2026-10-13 | Current versionunclear | Out-of-bounds read in Microsoft Office Outlook allows an unauthorized attacker to disclose information over a network. Affected versions
|
| CVE-2026-70254 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-88109 | HIGH (7.8) | 2026-10-13 | Current versionunclear | Use after free in Microsoft Office Click-To-Run allows an authorized attacker to elevate privileges locally. Affected versions
|
| CVE-2026-77902 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97774 | HIGH (7.0) | 2026-10-13 | Current versionunclear | Time-of-check time-of-use (toctou) race condition in Microsoft Office Click-To-Run allows an authorized attacker to elevate privileges locally. Affected versions
|
| CVE-2026-97759 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97778 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Integer overflow or wraparound in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97739 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97765 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97755 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97771 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97770 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97767 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Double free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97780 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97747 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97761 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97754 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97758 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97752 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97776 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97751 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97003 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97766 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97017 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97753 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97750 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97009 | HIGH (7.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally. Affected versions
|
| CVE-2026-96997 | HIGH (7.8) | 2026-10-13 | Current versionunclear | Use after free in Microsoft Office OneNote allows an authorized attacker to elevate privileges locally. Affected versions
|
| CVE-2026-97001 | HIGH (7.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally. Affected versions
|
| CVE-2026-97749 | CRITICAL (9.8) | 2026-10-13 | Current versionunclear | Double free in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-96996 | HIGH (7.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally. Affected versions
|
| CVE-2026-96995 | HIGH (7.8) | 2026-10-13 | Current versionunclear | Stack-based buffer overflow in Microsoft Office Word allows an authorized attacker to elevate privileges locally. Affected versions
|
| CVE-2026-97016 | CRITICAL (9.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-97012 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Stack-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-88202 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-88196 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-88197 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-88178 | CRITICAL (9.8) | 2026-10-13 | Current versionunclear | Use after free in Microsoft Office PowerPoint allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-88156 | CRITICAL (9.8) | 2026-10-13 | Current versionunclear | Stack-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-88145 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-88150 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Use of uninitialized resource in Microsoft Office Word allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-83891 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Stack-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-70300 | CRITICAL (9.8) | 2026-10-13 | Current versionunclear | Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code over a network. Affected versions
|
| CVE-2026-70301 | HIGH (8.8) | 2026-10-13 | Current versionunclear | Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network. Affected versions
|
148 further matching CVEs are not displayed. The table shows the 100 most relevant of 248, recently published first.