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VulnerabilityPublished Updated

CVE-2026-62429: Xen · Accessing the vNUMA configuration data of a guest is still possible when domain destruction has already started

Affects xenSource GCVE Database

0

Not known to be exploited · CVSS 6.5 Medium.

Data as of 28 Oct 2026, 05:11 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 12% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 28 Jul 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

Affected software

ProductAffectedFixed in
Ubuntu 26.10xenpkg:deb/ubuntu/xen?arch=source&distro=stonkingOther threatsAffected
  • =4.20.2+7-g1badcf5035-2build2
  • =4.20.2+37-g61ff35323e-1ubuntu1
  • =4.20.3+127-gc42374a105-1
Fixed in–
Ubuntu 26.04 LTSxenpkg:deb/ubuntu/xen?arch=source&distro=resoluteOther threatsAffected
  • =4.20.0+68-g35cb38b222-1
  • =4.20.2+7-g1badcf5035-2
  • =4.20.2+7-g1badcf5035-2build2
Fixed in–
Ubuntu 24.04 LTSxenpkg:deb/ubuntu/xen?arch=source&distro=nobleOther threatsAffected
  • 4.17.2-1 – 4.17.3+10-g091466ba55-1.1ubuntu3
7 affected builds
Fixed in–
Ubuntu 22.04 LTSxenpkg:deb/ubuntu/xen?arch=source&distro=jammyOther threatsAffected
  • =4.11.4+24-gddaaccbbab-1ubuntu2
  • =4.16.0-1~ubuntu2
  • =4.16.0-1~ubuntu2.1
Fixed in–
Ubuntu 20.04 LTSxenpkg:deb/ubuntu/xen?arch=source&distro=focalOther threatsAffected
  • 4.9.2-0ubuntu2 – 4.11.3+24-g14b62ab3e5-1ubuntu2.3
7 affected builds
Fixed in–
Ubuntu 18.04 LTSxenpkg:deb/ubuntu/xen?arch=source&distro=bionicOther threatsAffected
  • =4.9.0-0ubuntu3
  • =4.9.0-0ubuntu4
  • =4.9.2-0ubuntu1
Fixed in–

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

AI-suggested

Until a patch is available, monitor vendor advisories for updates. No specific mitigations are indicated in the current information.

Description

This vulnerability (CVE-2026-62429) involves the ability to access the virtual NUMA (vNUMA) configuration data of a guest virtual machine even after the domain destruction process has started. The issue arises because the cleanup of this configuration data is not properly synchronized with its retrieval by the device model controlling the guest. This could lead to unauthorized access to sensitive configuration data during domain teardown.

References

Community reviews

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