October 2026 CVE archive
Records published in NIST NVD between Oct 1 and Oct 29, 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
16,212
Critical
1,207
High
5,399
Medium
5,736
Low
600
Severity not reported
3,270
In CISA KEV
17
Most affected vendors (by CPE data where available): microsoft (1078), google (711), ibm (140), oracle (117), adobe (110), broadcom (61), apache (45), freerdp (42), linuxfoundation (41), dell (40)
| CVE | Severity | CVSS | KEV | Vendor / product | Published | Modified |
|---|---|---|---|---|---|---|
| CVE-2026-83871 Heap-based buffer overflow in OpenSSH for Windows allows an authorized attacker... |
high | 7.0 | — | Microsoft / windows 10 1809 | 2026-10-13 | 2026-10-21 |
| CVE-2026-83860 Stack-based buffer overflow in Windows GDI allows an unauthorized attacker to de... |
high | 7.5 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-21 |
| CVE-2026-83861 Heap-based buffer overflow in Windows Remote Desktop Protocol allows an authoriz... |
high | 7.8 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-21 |
| CVE-2026-83862 Use after free in Windows Network Load Balancing allows an unauthorized attacker... |
high | 8.8 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-23 |
| CVE-2026-83853 Use after free in Windows Hello allows an authorized attacker to elevate privile... |
high | 7.0 | — | Microsoft / windows 10 21h2 | 2026-10-13 | 2026-10-21 |
| CVE-2026-83855 Integer underflow (wrap or wraparound) in Windows WLAN Service allows an unautho... |
high | 7.5 | — | Microsoft / windows 11 23h2 | 2026-10-13 | 2026-10-21 |
| CVE-2026-83856 Out-of-bounds read in Windows Event Logging Service allows an unauthorized attac... |
high | 8.1 | — | Microsoft / windows 11 23h2 | 2026-10-13 | 2026-10-21 |
| CVE-2026-83857 Use after free in Windows Universal Disk Format File System Driver (UDFS) allows... |
high | 7.8 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-21 |
| CVE-2026-83859 Use after free in Windows NTFS allows an authorized attacker to elevate privileg... |
high | 7.8 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-21 |
| CVE-2026-83839 Time-of-check time-of-use (toctou) race condition in Windows Hyper-V allows an a... |
high | 7.0 | — | Microsoft / windows 10 1809 | 2026-10-13 | 2026-10-27 |
| CVE-2026-83840 Weak authentication in Windows Error Reporting allows an authorized attacker to... |
high | 7.8 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-27 |
| CVE-2026-83841 Concurrent execution using shared resource with improper synchronization ('race... |
high | 7.0 | — | Microsoft / windows 10 1809 | 2026-10-13 | 2026-10-27 |
| CVE-2026-83842 Double free in Windows TCP/IP allows an authorized attacker to elevate privilege... |
high | 7.0 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-28 |
| CVE-2026-83843 Out-of-bounds read in Windows Internet Key Exchange (IKE) Protocol allows an una... |
high | 7.5 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-28 |
| CVE-2026-83833 Heap-based buffer overflow in Windows Kernel allows an authorized attacker to el... |
high | 7.8 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-27 |
| CVE-2026-83834 Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to e... |
high | 7.0 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-27 |
| CVE-2026-83836 Heap-based buffer overflow in Windows Event Tracing allows an unauthorized attac... |
high | 7.8 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-27 |
| CVE-2026-83837 Improper access control in Windows Kernel-Mode Drivers allows an authorized atta... |
high | 7.8 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-27 |
| CVE-2026-83838 Integer underflow (wrap or wraparound) in Windows Bluetooth A2DP driver allows a... |
high | 8.0 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-27 |
| CVE-2026-83826 Untrusted pointer dereference in Windows Error Reporting allows an authorized at... |
high | 7.8 | — | Microsoft / windows 11 23h2 | 2026-10-13 | 2026-10-27 |
| CVE-2026-83827 Heap-based buffer overflow in Windows Bluetooth Port Driver allows an authorized... |
high | 7.0 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-27 |
| CVE-2026-83828 Heap-based buffer overflow in Windows MIDI Service Module allows an authorized a... |
high | 7.8 | — | Microsoft / windows 11 24h2 | 2026-10-13 | 2026-10-27 |
| CVE-2026-83829 Heap-based buffer overflow in Microsoft Windows Search Component allows an autho... |
high | 7.8 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-27 |
| CVE-2026-83830 Heap-based buffer overflow in Windows COM+ Event System Service allows an author... |
high | 7.8 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-27 |
| CVE-2026-83832 Out-of-bounds read in Windows Spaceport.sys allows an authorized attacker to ele... |
high | 7.8 | — | Microsoft / windows 10 1809 | 2026-10-13 | 2026-10-27 |
| CVE-2026-83792 Incorrect authorization in Windows Device Install Service allows an authorized a... |
high | 7.8 | — | Microsoft / windows 10 21h2 | 2026-10-13 | 2026-10-28 |
| CVE-2026-83793 Improper link resolution before file access ('link following') in Windows Update... |
high | 7.0 | — | Microsoft / windows 10 21h2 | 2026-10-13 | 2026-10-28 |
| CVE-2026-83795 Heap-based buffer overflow in Windows IKE Extension allows an unauthorized attac... |
high | 7.5 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-27 |
| CVE-2026-83796 Use after free in Windows Kernel allows an authorized attacker to elevate privil... |
high | 7.8 | — | Microsoft / windows 11 23h2 | 2026-10-13 | 2026-10-27 |
| CVE-2026-83797 Out-of-bounds read in Windows Partition Management Driver allows an unauthorized... |
high | 8.8 | — | Microsoft / windows 10 1809 | 2026-10-13 | 2026-10-27 |
| CVE-2026-83790 Use after free in Windows Hello allows an authorized attacker to elevate privile... |
high | 7.0 | — | Microsoft / windows 10 21h2 | 2026-10-13 | 2026-10-28 |
| CVE-2026-83791 Improper authorization in Windows Virtual Input allows an authorized attacker to... |
high | 7.8 | — | Microsoft / windows 10 1809 | 2026-10-13 | 2026-10-28 |
| CVE-2026-83768 Heap-based buffer overflow in Windows Kernel allows an authorized attacker to el... |
high | 7.8 | — | Microsoft / windows 10 1809 | 2026-10-13 | 2026-10-21 |
| CVE-2026-83761 Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker t... |
high | 7.8 | — | Microsoft / windows 10 1809 | 2026-10-13 | 2026-10-21 |
| CVE-2026-83756 Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker t... |
high | 7.8 | — | Microsoft / windows 10 21h2 | 2026-10-13 | 2026-10-21 |
| CVE-2026-83638 Heap-based buffer overflow in Windows USB Driver allows an authorized attacker t... |
high | 7.8 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-28 |
| CVE-2026-83639 Heap-based buffer overflow in Windows Sensor Data Service allows an authorized a... |
high | 7.8 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-28 |
| CVE-2026-83640 Heap-based buffer overflow in Windows NTFS allows an authorized attacker to exec... |
high | 7.8 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-28 |
| CVE-2026-83642 Access of resource using incompatible type ('type confusion') in DNS Server allo... |
high | 8.8 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-16 |
| CVE-2026-83588 Heap-based buffer overflow in Windows USB Driver allows an authorized attacker t... |
high | 7.8 | — | Microsoft / windows 10 1607 | 2026-10-13 | 2026-10-28 |
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.