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CVE-2026-19931VulnerabilityPublished Updated

Microsoft · Negotiate ambient user conn reuse

Affects MicrosoftSource GCVE Database

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Not known to be exploited.

Data as of 14 Nov 2026, 09:17 UTC

Severity
Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 8 Sep 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
  • =3.0
  • =4.0
Fixed in–

Description

CVE-2026-19931 is a vulnerability affecting Microsoft products versions 3.0 and 4.0. The provided information does not include technical details about the nature of the vulnerability or its impact. No CVSS score or exploit information is available.

References

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