CVE-2026-119953: Windows DNS use-after-free privilege escalation

CVE-2026-119953 · Severity: high · CVSS 7.8 · Published 2026-11-10

Windows DNS Server contains a use-after-free memory vulnerability that allows an authenticated attacker to escalate privileges on the local system. An attacker who has already gained local access could exploit this flaw to gain elevated administrative rights, potentially compromising the entire system.

Technologies: Microsoft Windows DNS. Vendors: Microsoft.

Quick answers

Is CVE-2026-119953 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-119953 being exploited in the wild.
How severe is CVE-2026-119953?
High severity, with a CVSS score of 7.8, published 10 November 2026.
Which products and versions are affected?
Microsoft Windows DNS.
Is there a fix for CVE-2026-119953?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-119953 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2026-119953?
Check whether you run Microsoft Windows DNS. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A use-after-free vulnerability exists in Windows DNS that allows an authorized local attacker to execute code with elevated privileges. The vulnerability requires prior authentication or local system access to trigger. Successful exploitation results in privilege escalation from a lower-privileged account to SYSTEM or administrator level.

Affected products

  • Microsoft Windows DNS

Timeline

  • 2026-11-10: disclosed

References

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