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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.

Published in September 2026Materially updated (Critical / KEV)
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)

CVESeverityCVSSKEVVendor / productPublishedModified
CVE-2026-68831
Files or directories accessible to external parties in Windows Defender Firewall...
medium 5.5 —Microsoft / windows 10 1607 2026-09-082026-09-24
CVE-2026-62801
Improper limitation of a pathname to a restricted directory ('path traversal') i...
medium 6.5 —Microsoft / windows 10 1607 2026-09-082026-09-24
CVE-2026-70575
Null pointer dereference in Windows Schannel allows an authorized attacker to de...
medium 6.5 —Microsoft / windows 11 23h2 2026-09-082026-09-24
CVE-2026-69531
Unintended proxy or intermediary ('confused deputy') in Microsoft Windows Speech...
medium 5.5 —Microsoft / windows 10 1607 2026-09-082026-09-24
CVE-2026-81380
Improper neutralization of special elements used in a command ('command injectio...
medium 5.9 —Microsoft / visual studio code 2026-09-082026-09-23
CVE-2026-78441
Out-of-bounds read in Windows OLE DB allows an unauthorized attacker to disclose...
medium 6.5 —Microsoft / sql server 2017 2026-09-082026-09-23
CVE-2026-69771
Improper link resolution before file access ('link following') in Windows Contai...
medium 4.7 —Microsoft / windows 11 23h2 2026-09-082026-09-22
CVE-2026-69792
Concurrent execution using shared resource with improper synchronization ('race...
medium 4.7 —Microsoft / windows 10 1607 2026-09-082026-09-22
CVE-2026-69794
Buffer over-read in Windows Encrypting File System (EFS) allows an authorized at...
medium 5.5 —Microsoft / windows 10 1607 2026-09-082026-09-22
CVE-2026-69674
Missing authentication for critical function in Windows Modern Device Management...
medium 5.5 —Microsoft / windows 10 1809 2026-09-082026-09-22
CVE-2026-69741
Out-of-bounds read in Windows Spaceport.sys allows an authorized attacker to dis...
medium 5.5 —Microsoft / windows 10 21h2 2026-09-082026-09-22
CVE-2026-72964
Missing authentication for critical function in Windows Internet Connection Shar...
medium 5.5 —Microsoft / windows 10 1607 2026-09-082026-09-21
CVE-2026-72945
Use of uninitialized resource in Windows Task Scheduler allows an authorized att...
medium 5.5 —Microsoft / windows 10 1607 2026-09-082026-09-21
CVE-2026-69393
Out-of-bounds read in Windows Spaceport.sys allows an authorized attacker to dis...
medium 5.7 —Microsoft / windows 10 1607 2026-09-082026-09-21
CVE-2026-69403
Missing authorization in Windows SMB Server allows an authorized attacker to dis...
medium 5.5 —Microsoft / windows 10 1607 2026-09-082026-09-21
CVE-2026-85875
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to...
medium 5.5 —Microsoft / 365 apps 2026-09-082026-09-17
CVE-2026-81958
Use of uninitialized resource in Microsoft Office Excel allows an unauthorized a...
medium 5.5 —Microsoft / 365 apps 2026-09-082026-09-17
CVE-2026-81395
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to...
medium 5.5 —Microsoft / 365 apps 2026-09-082026-09-17
CVE-2026-81399
Buffer over-read in Microsoft Office Excel allows an unauthorized attacker to di...
medium 5.5 —Microsoft / 365 apps 2026-09-082026-09-17
CVE-2026-81400
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to...
medium 5.5 —Microsoft / 365 apps 2026-09-082026-09-17
CVE-2026-81401
Access of resource using incompatible type ('type confusion') in Microsoft Offic...
medium 5.5 —Microsoft / 365 apps 2026-09-082026-09-17
CVE-2026-81390
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to...
medium 5.5 —Microsoft / 365 apps 2026-09-082026-09-17
CVE-2026-81391
Use of uninitialized resource in Microsoft Office Excel allows an unauthorized a...
medium 5.5 —Microsoft / 365 apps 2026-09-082026-09-17
CVE-2026-81392
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to...
medium 5.5 —Microsoft / 365 apps 2026-09-082026-09-17
CVE-2026-81393
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to...
medium 5.5 —Microsoft / 365 apps 2026-09-082026-09-17
CVE-2026-81394
Exposure of sensitive system information to an unauthorized control sphere in Mi...
medium 5.5 —Microsoft / 365 apps 2026-09-082026-09-17
CVE-2026-81387
Exposure of sensitive system information to an unauthorized control sphere in Mi...
medium 5.5 —Microsoft / 365 apps 2026-09-082026-09-17
CVE-2026-80091
Use of uninitialized resource in Microsoft Office allows an unauthorized attacke...
medium 6.5 —Microsoft / 365 apps 2026-09-082026-09-17
CVE-2026-80086
Out-of-bounds read in Microsoft Office PowerPoint allows an unauthorized attacke...
medium 6.5 —Microsoft / 365 apps 2026-09-082026-09-17
CVE-2026-80087
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker t...
medium 6.5 —Microsoft / 365 apps 2026-09-082026-09-17
CVE-2026-80088
Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to d...
medium 6.5 —Microsoft / 365 apps 2026-09-082026-09-17
CVE-2026-80089
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclo...
medium 6.5 —Microsoft / 365 apps 2026-09-082026-09-17
CVE-2026-80090
Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to d...
medium 6.5 —Microsoft / 365 apps 2026-09-082026-09-17
CVE-2026-80076
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclo...
medium 6.5 —Microsoft / 365 apps 2026-09-082026-09-17
CVE-2026-80078
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclo...
medium 6.5 —Microsoft / 365 apps 2026-09-082026-09-17
CVE-2026-80082
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclo...
medium 6.5 —Microsoft / 365 apps 2026-09-082026-09-17
CVE-2026-78515
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to...
medium 6.5 —Microsoft / 365 apps 2026-09-082026-09-17
CVE-2026-78520
Out-of-bounds read in Microsoft Office Outlook allows an unauthorized attacker t...
medium 6.5 —Microsoft / 365 apps 2026-09-082026-09-17
CVE-2026-78506
Improper null termination in Microsoft Office Word allows an unauthorized attack...
medium 5.5 —Microsoft / 365 apps 2026-09-082026-09-17
CVE-2026-78513
Out-of-bounds read in Microsoft Office PowerPoint allows an unauthorized attacke...
medium 5.5 —Microsoft / 365 apps 2026-09-082026-09-17

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.