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CVE-2026-42769VulnerabilityPublished Updated

CMP rootCaKeyUpdate · Trust-Anchor Substitution via cert/issuer Typo

Affects MicrosoftSource GCVE Database

0

Not known to be exploited · fixed in 3.5.3-1ubuntu3.4 : update Microsoft when convenient.

Data as of 26 Oct 2026, 17:16 UTC

Severity
Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS
0.5% chance of exploitation in 30 days – higher than 45% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 3.5.3-1ubuntu3.4, 3.5.5-1ubuntu3.2

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 13 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 26 Oct 2026.

What to do

Upgrade the Ubuntu openssl to 3.5.3-1ubuntu3.4 (package) or 3.5.5-1ubuntu3.2 (package).

Affected software

ProductAffectedFixed in
Ubuntu 26.10edk2pkg:deb/ubuntu/edk2?arch=source&distro=stonkingOther threatsAffected
  • 2025.11-3ubuntu7 – 2026.05-2ubuntu3
5 affected builds
Fixed in–
Ubuntu 26.10edk2-hwepkg:deb/ubuntu/edk2-hwe?arch=source&distro=stonkingOther threatsAffected
  • 2025.11-3ubuntu8 – 2026.05-2ubuntu3
5 affected builds
Fixed in–
Ubuntu 26.04 LTSedk2pkg:deb/ubuntu/edk2?arch=source&distro=resoluteOther threatsAffected
  • 2025.02-8ubuntu3 – 2025.11-3ubuntu7.3
5 affected builds
Fixed in–
Ubuntu 26.04 LTSedk2-hwepkg:deb/ubuntu/edk2-hwe?arch=source&distro=resoluteOther threatsAffected
  • =2025.11-3ubuntu6
  • =2025.11-3ubuntu8
  • =2025.11-3ubuntu8.2
Fixed in–
Ubuntu 26.04 LTSopensslpkg:deb/ubuntu/openssl?arch=source&distro=resoluteOther threatsAffected
  • <3.5.5-1ubuntu3.2
Fixed in
  • 3.5.5-1ubuntu3.2
Ubuntu 25.10edk2pkg:deb/ubuntu/edk2?arch=source&distro=questingOther threatsAffected
  • 2025.02-3ubuntu2 – 2025.02-8ubuntu3.2
7 affected builds
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

References

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