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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
22,229
Critical
3,102
High
7,094
Medium
6,630
Low
674
Severity not reported
4,729
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-2026-47304
Improper verification of cryptographic signature in .NET allows an unauthorized...
critical 9.8 —Microsoft / .net framework 2026-07-142026-10-28
CVE-2026-83789
Heap-based buffer overflow in Windows SMB Client allows an unauthorized attacker...
critical 9.8 —Microsoft / windows 10 1607 2026-10-132026-10-28
CVE-2026-70153
Heap-based buffer overflow in Microsoft PostScript Printer Driver allows an unau...
critical 9.8 —Microsoft / windows 10 1607 2026-10-132026-10-28
CVE-2026-70147
Heap-based buffer overflow in Microsoft PostScript Printer Driver allows an unau...
critical 9.8 —Microsoft / windows 10 1607 2026-10-132026-10-28
CVE-2026-70262
Heap-based buffer overflow in WebDAV allows an unauthorized attacker to elevate...
critical 9.8 —Microsoft / windows 10 1607 2026-10-132026-10-28
CVE-2026-70275
Untrusted pointer dereference in Windows CD-ROM Driver allows an unauthorized at...
critical 9.8 —Microsoft / windows 10 1607 2026-10-132026-10-28
CVE-2026-70157
Heap-based buffer overflow in Windows System Information Console allows an unaut...
critical 9.8 —Microsoft / windows 10 1607 2026-10-132026-10-28
CVE-2026-96864
Double free in Microsoft Failover Cluster Virtual Driver allows an unauthorized...
critical 9.8 —Microsoft / windows 10 1607 2026-10-132026-10-28
CVE-2026-85928
Heap-based buffer overflow in Windows Volume Manager Extension Driver allows an...
critical 9.8 —Microsoft / windows 10 1607 2026-10-132026-10-28
CVE-2026-105008
No cwe for this issue in Windows Schannel allows an unauthorized attacker to per...
critical 9.0 —Microsoft / windows 10 1607 2026-10-132026-10-27
CVE-2026-26150
Server-side request forgery (ssrf) in Microsoft Purview allows an unauthorized a...
critical 10.0 —Microsoft / purview ediscovery 2026-04-232026-10-26
CVE-2026-33819
Deserialization of untrusted data in Microsoft Bing allows an unauthorized attac...
critical 9.8 —Microsoft / bing 2026-04-232026-10-26
CVE-2026-35435
Improper access control in Azure AI Foundry M365 published agents allows an unau...
critical 10.0 —Microsoft / azure ai foundry 2026-05-072026-10-26
CVE-2026-33821
Improper privilege management in Microsoft Dynamics 365 Customer Insights allows...
critical 9.9 —Microsoft / dynamics 365 customer insights 2026-05-122026-10-26
CVE-2026-105723
Untrusted pointer dereference in Windows Distributed File System (DFS) allows an...
critical 9.8 —Microsoft / windows 10 1607 2026-10-132026-10-26
CVE-2026-69634
Heap-based buffer overflow in Windows iSCSI allows an unauthorized attacker to e...
critical 9.8 —Microsoft / windows 10 1607 2026-10-132026-10-26
CVE-2026-69639
Heap-based buffer overflow in Windows Libarchive allows an unauthorized attacker...
critical 9.8 —Microsoft / windows 10 1809 2026-10-132026-10-26
CVE-2026-105010
Use after free in Microsoft Windows Search Component allows an unauthorized atta...
critical 9.8 —Microsoft / windows 10 1607 2026-10-132026-10-26
CVE-2026-26145
Improper access control in Azure Synapse allows an authorized attacker to elevat...
critical 9.8 —Microsoft / azure synapse 2026-07-022026-10-25
CVE-2026-41106
Url redirection to untrusted site ('open redirect') in M365 Copilot allows an un...
critical 9.3 —Microsoft / 365 copilot 2026-07-022026-10-25
CVE-2026-57983
Improper authorization in Microsoft Edge (Chromium-based) allows an unauthorized...
critical 10.0 —Microsoft / edge chromium 2026-07-032026-10-25
CVE-2026-58617
Improper access control in Microsoft 365 Copilot for iOS allows an unauthorized...
critical 9.8 —Microsoft / 365 copilot 2026-07-142026-10-24
CVE-2026-62836
Improper restriction of communication channel to intended endpoints in Azure SQL...
critical 10.0 —Microsoft / azure sql managed instance 2026-08-072026-10-24
CVE-2026-57104
Improper neutralization of input during web page generation ('cross-site scripti...
critical 9.6 —Microsoft / azure storage explorer 2026-08-112026-10-24
CVE-2026-65768
Improper limitation of a pathname to a restricted directory ('path traversal') i...
critical 9.8 —Microsoft / teams 2026-08-112026-10-24
CVE-2026-56160
Improper authorization in Azure Red Hat OpenShift (ARO) allows an authorized att...
critical 9.9 —Microsoft / azure red hat openshift 2026-07-242026-10-24
CVE-2026-58275
Missing authorization in Azure DNS allows an unauthorized attacker to elevate pr...
critical 9.8 —Microsoft / azure dns 2026-07-242026-10-24
CVE-2026-62825
Improper authentication in Azure Key Vault allows an unauthorized attacker to el...
critical 9.8 —Microsoft / azure key vault 2026-07-242026-10-24
CVE-2026-58630
Improper access control in Azure App Service allows an unauthorized attacker to...
critical 9.8 —Microsoft / azure app service for linux 2026-07-242026-10-24
CVE-2026-66321
Access of resource using incompatible type ('type confusion') in Microsoft Edge...
critical 9.6 —Microsoft / edge chromium 2026-08-042026-10-23
CVE-2026-83888
Buffer over-read in Windows CD-ROM Driver allows an unauthorized attacker to ele...
critical 9.8 —Microsoft / windows 10 1607 2026-10-132026-10-21
CVE-2026-102210
Heap-based buffer overflow in Windows Text Shaping allows an unauthorized attack...
critical 9.8 —Microsoft / windows 10 1809 2026-10-132026-10-20
CVE-2026-100202
Use after free in Windows Message Queuing Queue Manager allows an unauthorized a...
critical 9.8 —Microsoft / windows 10 1607 2026-10-132026-10-20
CVE-2026-100219
Use after free in Microsoft QUIC allows an unauthorized attacker to execute code...
critical 9.8 —Microsoft / windows 11 23h2 2026-10-132026-10-20
CVE-2026-100222
Heap-based buffer overflow in Network Policy Server (NPS) allows an unauthorized...
critical 9.8 —Microsoft / windows 10 1607 2026-10-132026-10-20
CVE-2026-96252
Improper verification of cryptographic signature in Active Directory Federation...
critical 9.1 —Microsoft / windows 10 1607 2026-10-132026-10-20
CVE-2026-83935
Heap-based buffer overflow in Microsoft XML allows an unauthorized attacker to e...
critical 9.8 —Microsoft / windows 10 1607 2026-10-132026-10-19
CVE-2026-84015
Heap-based buffer overflow in Remote Access Point-to-Point Protocol (PPP) EAP-TL...
critical 9.8 —Microsoft / windows 10 1607 2026-10-132026-10-19
CVE-2026-69883
Use after free in Windows iSCSI allows an unauthorized attacker to execute code...
critical 9.8 —Microsoft / windows 10 1607 2026-10-132026-10-19
CVE-2025-54914
Azure Networking Elevation of Privilege Vulnerability
critical 9.8 —Microsoft / azure networking 2025-09-042026-10-18

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.