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CVE-2026-12318VulnerabilityPublished

NSS · Incorrect Boundary Conditions

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-12318· High 7.3

Not known to be exploited · CVSS 7.3 High · patch available : patch Microsoft soon.

Data as of 14 Nov 2026, 09:32 UTC

CVSS 3.1 base score
7.3High
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 16 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

ProductAffectedFixed in
Microsoft Security Response Center MicrosoftAffected
  • <152
Fixed in
  • 152

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.

References

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