October 2026 CVE archive
Records published 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.
Total records
17,481
Critical
1,390
High
6,087
Medium
6,446
Low
659
Severity not reported
2,899
In CISA KEV
21
Most affected vendors (by CPE data where available): microsoft (1359), google (759), oracle (376), apple (282), ibm (149), adobe (138), apache (73), imagemagick (72), broadcom (61), freerdp (60)
| CVE | Severity | CVSS | KEV | Vendor / product | Published | Modified |
|---|---|---|---|---|---|---|
| CVE-2026-83728 Improper validation of syntactic correctness of input in Windows Hyper-V allows... |
high | 8.8 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83732 Use after free in Windows Win32K allows an authorized attacker to elevate privil... |
high | 7.8 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83735 Release of invalid pointer or reference in Windows Kernel allows an authorized a... |
high | 7.8 | — | Microsoft / windows 11 23h2 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83721 Use after free in Windows Win32K allows an authorized attacker to elevate privil... |
high | 7.8 | — | Microsoft / windows 11 24h2 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83722 Use after free in Microsoft Local Security Authority Server (lsasrv) allows an a... |
high | 7.0 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-30 |
| CVE-2026-83724 Heap-based buffer overflow in Windows Management Instrumentation allows an autho... |
high | 7.0 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83725 Heap-based buffer overflow in Microsoft Windows Search Component allows an unaut... |
high | 8.8 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83726 Use after free in Windows DWM Core Library allows an authorized attacker to elev... |
high | 7.8 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83715 Missing authentication for critical function in Windows Error Reporting allows a... |
high | 7.1 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83716 Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to e... |
high | 8.8 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83717 Use after free in Windows Installer allows an authorized attacker to elevate pri... |
high | 7.0 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83718 Use after free in Windows Installer allows an authorized attacker to elevate pri... |
high | 7.0 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83720 Use after free in Windows Kerberos allows an authorized attacker to elevate priv... |
high | 7.0 | — | Microsoft / windows 11 26h1 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83708 Stack-based buffer overflow in Windows Installer allows an authorized attacker t... |
high | 7.0 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83709 Heap-based buffer overflow in Windows NTLM allows an authorized attacker to elev... |
high | 7.8 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83710 Use after free in Windows Device Association Service allows an authorized attack... |
high | 7.0 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83712 Out-of-bounds write in Windows NTFS allows an authorized attacker to execute cod... |
high | 7.8 | — | Microsoft / windows 10 1809 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83704 Improper link resolution before file access ('link following') in Microsoft Wind... |
high | 7.8 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83707 Use after free in Windows Event Tracing allows an authorized attacker to elevate... |
high | 7.0 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83698 Heap-based buffer overflow in Windows Client-Side Caching (CSC) Service allows a... |
high | 7.8 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-30 |
| CVE-2026-83699 Stack-based buffer overflow in Windows Client-Side Caching (CSC) Service allows... |
high | 7.8 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-30 |
| CVE-2026-83700 Use after free in Windows Now Playing Session Manager allows an authorized attac... |
high | 7.8 | — | Microsoft / windows 10 1809 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83701 Use after free in Windows Now Playing Session Manager allows an authorized attac... |
high | 7.0 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83702 Use after free in Windows Installer allows an authorized attacker to elevate pri... |
high | 7.0 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83691 Heap-based buffer overflow in Windows DHCP Server allows an authorized attacker... |
high | 7.8 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83692 Heap-based buffer overflow in Windows Bind Filter Driver allows an authorized at... |
high | 7.8 | — | Microsoft / windows 10 21h2 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83694 Out-of-bounds read in Windows Volume Manager Extension Driver allows an authoriz... |
high | 7.0 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83696 Use after free in Windows Cloud Files Mini Filter Driver allows an authorized at... |
high | 7.0 | — | Microsoft / windows 10 1809 | 2026-10-13 | 2026-10-30 |
| CVE-2026-83687 Use after free in Windows Connected User Experiences and Telemetry allows an aut... |
high | 7.0 | — | Microsoft / windows 11 23h2 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83688 Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attac... |
high | 8.8 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83689 Use after free in Windows Error Reporting allows an authorized attacker to eleva... |
high | 7.0 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83690 Use after free in Windows Kernel allows an authorized attacker to elevate privil... |
high | 7.8 | — | Microsoft / windows 10 1809 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83679 Use after free in Windows Defender Firewall Service allows an authorized attacke... |
high | 7.8 | — | Microsoft / windows 11 23h2 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83680 Heap-based buffer overflow in Windows Installer allows an authorized attacker to... |
high | 7.0 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83682 Use after free in Windows TCP/IP allows an authorized attacker to elevate privil... |
high | 7.0 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83674 Weak authentication in Active Directory Federation Services (AD FS) allows an un... |
high | 8.1 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83675 Use after free in Windows Kernel allows an authorized attacker to elevate privil... |
high | 7.0 | — | Microsoft / windows 11 24h2 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83676 Integer underflow (wrap or wraparound) in Windows Installer allows an authorized... |
high | 7.0 | — | Microsoft / windows 10 21h2 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83677 Missing release of memory after effective lifetime in Windows DHCP Client allows... |
high | 7.5 | — | Microsoft / windows 11 24h2 | 2026-10-13 | 2026-10-29 |
| CVE-2026-83678 Heap-based buffer overflow in Windows TCP/IP allows an authorized attacker to el... |
high | 7.8 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-29 |
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.