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CVE-2026-69184VulnerabilityPublished Updated

Microsoft · c-ares: CPU-exhaustion denial of service via unbounded DNS name compression pointer chains

Affects MicrosoftSource GCVE Database

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Not known to be exploited.

Data as of 6 Nov 2026, 11:23 UTC

Severity
Medium

Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD

EPSS
0.4% chance of exploitation in 30 days – higher than 41% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 20 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 6 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Microsoft Security Response Center MicrosoftAffected
  • =3.0
Fixed in–

AI-suggested

Until a fix is available, consider limiting exposure to untrusted DNS responses or applying network-level controls to mitigate potential exploitation.

Description

CVE-2026-69184 is a vulnerability in c-ares version 3.0 that allows CPU exhaustion denial of service via unbounded DNS name compression pointer chains. This flaw can cause the affected software to consume excessive CPU resources when processing specially crafted DNS responses.

References

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