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October 2026 CVE archive

Records last modified 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. The modified view only includes records that were CRITICAL or CISA-KEV-listed when imported — it is not a complete list of every modification.

Published in October 2026Materially updated (Critical / KEV)
Total records
22,209
Critical
3,102
High
7,090
Medium
6,615
Low
674
Severity not reported
4,728
In CISA KEV
188

Most affected vendors (by CPE data where available): microsoft (1176), google (780), ibm (323), mozilla (182), oracle (154), adobe (137), linux (126), apache (116), broadcom (113), fabian (98)

CVESeverityCVSSKEVVendor / productPublishedModified
CVE-2026-108134
Use after free in Windows Autopilot allows an authorized attacker to elevate pri...
high 7.0 —Microsoft / windows 11 24h2 2026-10-132026-10-28
CVE-2026-108399
Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to e...
high 7.2 —Microsoft / windows 10 1607 2026-10-132026-10-28
CVE-2026-69650
Improper verification of cryptographic signature in Windows Key Distribution Cen...
high 7.8 —Microsoft / windows 10 1607 2026-10-132026-10-28
CVE-2026-69743
Use after free in Windows Program Compatibility Assistant Service allows an auth...
high 7.0 —Microsoft / windows 11 23h2 2026-10-132026-10-28
CVE-2026-69763
Use after free in Windows Storage allows an authorized attacker to elevate privi...
high 7.0 —Microsoft / windows 10 1809 2026-10-132026-10-28
CVE-2026-70142
Untrusted search path in Windows Update Service allows an authorized attacker to...
high 7.8 —Microsoft / windows 11 23h2 2026-10-132026-10-28
CVE-2026-70143
Heap-based buffer overflow in Windows Network File System allows an authorized a...
high 7.8 —Microsoft / windows 10 1607 2026-10-132026-10-28
CVE-2026-70163
Allocation of resources without limits or throttling in OpenSSH for Windows allo...
high 7.5 —Microsoft / windows 10 1809 2026-10-132026-10-28
CVE-2026-70164
Use after free in Windows TCP/IP allows an authorized attacker to elevate privil...
high 7.0 —Microsoft / windows 10 1607 2026-10-132026-10-28
CVE-2026-70168
Use after free in Windows Ancillary Function Driver for WinSock allows an author...
high 7.0 —Microsoft / windows 10 1607 2026-10-132026-10-28
CVE-2026-70169
Concurrent execution using shared resource with improper synchronization ('race...
high 7.0 —Microsoft / windows 10 1809 2026-10-132026-10-28
CVE-2026-70172
Untrusted pointer dereference in Windows NTFS allows an authorized attacker to e...
high 7.8 —Microsoft / windows 10 1607 2026-10-132026-10-28
CVE-2026-70177
Numeric truncation error in Microsoft Windows Search Component allows an authori...
high 7.8 —Microsoft / windows 10 1607 2026-10-132026-10-28
CVE-2026-70184
Improper resolution of path equivalence in Windows Backup Engine allows an autho...
high 7.8 —Microsoft / windows 10 21h2 2026-10-132026-10-28
CVE-2026-70185
Protection mechanism failure in Windows PowerShell allows an authorized attacker...
high 8.8 —Microsoft / windows 10 1607 2026-10-132026-10-28
CVE-2026-70205
Access of resource using incompatible type ('type confusion') in Windows Ancilla...
high 7.0 —Microsoft / windows 10 1607 2026-10-132026-10-28
CVE-2026-83795
Heap-based buffer overflow in Windows IKE Extension allows an unauthorized attac...
high 7.5 —Microsoft / windows 10 1607 2026-10-132026-10-27
CVE-2026-83796
Use after free in Windows Kernel allows an authorized attacker to elevate privil...
high 7.8 —Microsoft / windows 11 23h2 2026-10-132026-10-27
CVE-2026-83797
Out-of-bounds read in Windows Partition Management Driver allows an unauthorized...
high 8.8 —Microsoft / windows 10 1809 2026-10-132026-10-27
CVE-2026-83826
Untrusted pointer dereference in Windows Error Reporting allows an authorized at...
high 7.8 —Microsoft / windows 11 23h2 2026-10-132026-10-27
CVE-2026-83827
Heap-based buffer overflow in Windows Bluetooth Port Driver allows an authorized...
high 7.0 —Microsoft / windows 10 1607 2026-10-132026-10-27
CVE-2026-83828
Heap-based buffer overflow in Windows MIDI Service Module allows an authorized a...
high 7.8 —Microsoft / windows 11 24h2 2026-10-132026-10-27
CVE-2026-83829
Heap-based buffer overflow in Microsoft Windows Search Component allows an autho...
high 7.8 —Microsoft / windows 10 1607 2026-10-132026-10-27
CVE-2026-83830
Heap-based buffer overflow in Windows COM+ Event System Service allows an author...
high 7.8 —Microsoft / windows 10 1607 2026-10-132026-10-27
CVE-2026-83832
Out-of-bounds read in Windows Spaceport.sys allows an authorized attacker to ele...
high 7.8 —Microsoft / windows 10 1809 2026-10-132026-10-27
CVE-2026-83833
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to el...
high 7.8 —Microsoft / windows 10 1607 2026-10-132026-10-27
CVE-2026-83834
Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to e...
high 7.0 —Microsoft / windows 10 1607 2026-10-132026-10-27
CVE-2026-83836
Heap-based buffer overflow in Windows Event Tracing allows an unauthorized attac...
high 7.8 —Microsoft / windows 10 1607 2026-10-132026-10-27
CVE-2026-83837
Improper access control in Windows Kernel-Mode Drivers allows an authorized atta...
high 7.8 —Microsoft / windows 10 1607 2026-10-132026-10-27
CVE-2026-83838
Integer underflow (wrap or wraparound) in Windows Bluetooth A2DP driver allows a...
high 8.0 —Microsoft / windows 10 1607 2026-10-132026-10-27
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 2026-10-132026-10-27
CVE-2026-83840
Weak authentication in Windows Error Reporting allows an authorized attacker to...
high 7.8 —Microsoft / windows 10 1607 2026-10-132026-10-27
CVE-2026-83841
Concurrent execution using shared resource with improper synchronization ('race...
high 7.0 —Microsoft / windows 10 1809 2026-10-132026-10-27
CVE-2026-105007
An elevation of privilege vulnerability exists in the Network Driver Interface S...
high 8.8 —Microsoft / windows 10 1607 2026-10-132026-10-27
CVE-2026-103555
Heap-based buffer overflow in Virtual Hard Disk (VHD) Miniport Driver allows an...
high 7.0 —Microsoft / windows 10 1607 2026-10-132026-10-27
CVE-2026-103575
Use after free in Remote Desktop Client allows an unauthorized attacker to execu...
high 8.8 —Microsoft / windows 10 1607 2026-10-132026-10-27
CVE-2026-103577
Insecure default variable initialization in Microsoft QUIC allows an unauthorize...
high 7.5 —Microsoft / windows 11 23h2 2026-10-132026-10-27
CVE-2026-105003
Heap-based buffer overflow in HID class driver allows an authorized attacker to...
high 7.8 —Microsoft / windows 10 1607 2026-10-132026-10-27
CVE-2026-87694
Use after free in Windows Installer allows an authorized attacker to elevate pri...
high 7.8 —Microsoft / windows 10 1607 2026-10-132026-10-27
CVE-2026-87695
Inclusion of functionality from untrusted control sphere in Microsoft Exchange S...
high 7.8 —Microsoft / exchange server 2026-10-132026-10-27

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.