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CVE-2026-95838VulnerabilityPublished Updated

Microsoft · containerd: Unpack DoS via repeated opaque whiteouts

Affects MicrosoftSource GCVE Database

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Not known to be exploited.

Data as of 2 Nov 2026, 09:29 UTC

Severity
Medium

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

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 14 Oct 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 1 Nov 2026.

What to do

Affected software

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

Description

CVE-2026-95838 is a denial-of-service vulnerability in containerd version 3.0 caused by repeated opaque whiteouts during the unpacking process. This flaw can lead to resource exhaustion or service disruption.

References

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