October 2026 CVE archive
Records last modified in NIST NVD between Oct 1 and Oct 31, 2026 (UTC). Data imported from the NVD CVE API 2.0 and the CISA KEV catalog; each record shows its own source and verification time. The modified view only includes records that were CRITICAL or CISA-KEV-listed when imported — it is not a complete list of every modification.
Total records
24,528
Critical
3,295
High
7,946
Medium
7,627
Low
739
Severity not reported
4,921
In CISA KEV
191
Most affected vendors (by CPE data where available): microsoft (1424), google (825), linux (722), ibm (323), oracle (193), mozilla (182), adobe (165), broadcom (118), apache (116), fabian (98)
| CVE | Severity | CVSS | KEV | Vendor / product | Published | Modified |
|---|---|---|---|---|---|---|
| CVE-2026-97753 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized atta... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-97754 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized atta... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-97755 Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-97756 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized atta... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-97757 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized atta... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-97758 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized atta... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-97745 Use after free in Microsoft Office Excel allows an unauthorized attacker to exec... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-97746 Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unaut... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-97747 Use after free in Microsoft Office Excel allows an unauthorized attacker to exec... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-97748 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized atta... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-97750 Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized att... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-97011 Use of uninitialized resource in Microsoft Office Excel allows an unauthorized a... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-97017 Use after free in Microsoft Office Excel allows an unauthorized attacker to exec... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-97738 Use after free in Microsoft Office Excel allows an unauthorized attacker to exec... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-97739 Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unaut... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-97741 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized atta... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-97742 Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized att... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-97001 Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attac... |
high | 7.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-97003 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized atta... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-97004 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized atta... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-97007 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized atta... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-97008 Buffer underwrite ('buffer underflow') in Microsoft Office Excel allows an unaut... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-97010 Use after free in Microsoft Office Excel allows an unauthorized attacker to exec... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-96995 Stack-based buffer overflow in Microsoft Office Word allows an authorized attack... |
high | 7.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-96997 Use after free in Microsoft Office OneNote allows an authorized attacker to elev... |
high | 7.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-88197 Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker t... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-88202 Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attac... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-88207 Heap-based buffer overflow in Microsoft Office PowerPoint allows an unauthorized... |
high | 7.5 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-88210 Reliance on untrusted inputs in a security decision in Microsoft Office Word all... |
high | 7.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-88186 Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attac... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-88196 Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker t... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-88185 Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attac... |
high | 8.1 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-88144 Use after free in Microsoft Office PowerPoint allows an unauthorized attacker to... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-88145 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized atta... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-88150 Use of uninitialized resource in Microsoft Office Word allows an unauthorized at... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-83891 Stack-based buffer overflow in Microsoft Office Word allows an unauthorized atta... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-77902 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized atta... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-70301 Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attac... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-70302 Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attac... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
| CVE-2026-70287 Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attac... |
high | 8.8 | — | Microsoft / 365 apps | 2026-10-13 | 2026-10-15 |
Sources: NIST NVD (CVE API 2.0) and the CISA KEV catalog. Severity is as stated by the source; missing values are shown as “not reported”, never estimated.