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
Not known to be exploited · CVSS 6.5 Medium.
Data as of 28 Oct 2026, 05:11 UTC
- 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:NExploitation evidence
Disclosed: evidence found.
CVE published 28 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.10xenpkg:deb/ubuntu/xen?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSxenpkg:deb/ubuntu/xen?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSxenpkg:deb/ubuntu/xen?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 22.04 LTSxenpkg:deb/ubuntu/xen?arch=source&distro=jammyOther threats | Affected
| Fixed in– |
Ubuntu 20.04 LTSxenpkg:deb/ubuntu/xen?arch=source&distro=focalOther threats | Affected
| Fixed in– |
Ubuntu 18.04 LTSxenpkg:deb/ubuntu/xen?arch=source&distro=bionicOther threats | Affected
| 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
- nvd.nist.gov/vuln/detail/CVE-2026-62429 (opens in a new tab)
- xenbits.xenproject.org/xsa/advisory-502.html (opens in a new tab)
- openwall.com/lists/oss-security/2026/07/28/18 (opens in a new tab)
- xenbits.xen.org/xsa/advisory-502.html (opens in a new tab)
- ubuntu.com/security/CVE-2026-62429 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-62429 (opens in a new tab)
- xenbits.xen.org/xsa/advisory-502.html (opens in a new tab)