September 2026 CVE archive
Records last modified in NIST NVD between Sep 1 and Sep 30, 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
11,364
Critical
1,230
High
4,374
Medium
4,126
Low
462
Severity not reported
1,172
In CISA KEV
59
Most affected vendors (by CPE data where available): microsoft (964), google (608), oracle (274), apple (244), adobe (197), dell (138), ibm (104), arubanetworks (101), mongodb (64), apache (56)
| CVE | Severity | CVSS | KEV | Vendor / product | Published | Modified |
|---|---|---|---|---|---|---|
| CVE-2026-69513 Heap-based buffer overflow in Windows Error Reporting allows an authorized attac... |
high | 7.8 | — | Microsoft / windows 10 1809 | 2026-09-08 | 2026-09-18 |
| CVE-2026-69574 Use after free in Windows Device Association Service allows an authorized attack... |
high | 7.0 | — | Microsoft / windows 10 1809 | 2026-09-08 | 2026-09-18 |
| CVE-2026-69587 Null pointer dereference in Windows IKE Extension allows an unauthorized attacke... |
high | 7.5 | — | Microsoft / windows 11 23h2 | 2026-09-08 | 2026-09-18 |
| CVE-2026-69588 Missing release of memory after effective lifetime in Windows TCP/IP allows an u... |
high | 7.5 | — | Microsoft / windows 11 23h2 | 2026-09-08 | 2026-09-18 |
| CVE-2026-81956 Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to... |
high | 7.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-81957 Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to... |
high | 7.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-81959 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized atta... |
high | 7.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-81960 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized atta... |
high | 7.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-81949 Integer overflow or wraparound in Microsoft Office Excel allows an unauthorized... |
high | 7.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-81950 Double free in Microsoft Office Excel allows an unauthorized attacker to execute... |
high | 7.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-81951 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized atta... |
high | 7.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-81952 Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attac... |
high | 8.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-81953 Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized att... |
high | 7.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-81954 Use after free in Microsoft Office Excel allows an unauthorized attacker to exec... |
high | 7.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-81947 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized atta... |
high | 7.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-81948 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized atta... |
high | 7.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-81396 Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized att... |
high | 7.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-81397 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized atta... |
high | 7.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-81398 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized atta... |
high | 7.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-81388 Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized att... |
high | 7.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-81389 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized atta... |
high | 7.0 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-81386 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized atta... |
high | 7.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-80085 Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attac... |
high | 8.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-80080 Double free in Microsoft Office Word allows an unauthorized attacker to execute... |
high | 8.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-78524 Out-of-bounds write in Microsoft Office allows an unauthorized attacker to execu... |
high | 8.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-78525 Use after free in Microsoft Office Outlook allows an unauthorized attacker to ex... |
high | 8.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-78526 Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attac... |
high | 8.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-78514 Use after free in Microsoft Office Word allows an unauthorized attacker to execu... |
high | 8.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-78517 Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attac... |
high | 8.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-78518 Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to... |
high | 8.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-78521 Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attac... |
high | 8.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-78507 Use after free in Microsoft Office Word allows an unauthorized attacker to execu... |
high | 8.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-78511 Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attac... |
high | 8.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-78504 Stack-based buffer overflow in Microsoft Office Word allows an unauthorized atta... |
high | 8.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-78505 Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker t... |
high | 8.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-77901 Null pointer dereference in Microsoft Office Word allows an unauthorized attacke... |
high | 8.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-77898 Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker t... |
high | 7.5 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-72972 Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attac... |
high | 8.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-72973 Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attac... |
high | 8.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
| CVE-2026-69797 Use after free in Microsoft Office PowerPoint allows an unauthorized attacker to... |
high | 8.8 | — | Microsoft / 365 apps | 2026-09-08 | 2026-09-17 |
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.