NSS · Incorrect Boundary Conditions
Affects MicrosoftSource GCVE Database
Not known to be exploited · CVSS 7.3 High · patch available : patch Microsoft soon.
Data as of 14 Nov 2026, 09:32 UTC
- Patch
- Available
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:LExploitation evidence
Disclosed: evidence found.
CVE published 16 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Microsoft Security Response Center Microsoft | Affected
| Fixed in
|
Description
CVE-2026-12318 is a vulnerability in the Libraries component of Microsoft software version 4.0 involving incorrect boundary conditions. The issue relates to a CWE-119 type flaw, which typically involves improper handling of memory boundaries. No CVSS score or detailed impact information is provided.