During Xenstore live update the state record for a Xenstore watch with specified watch depth is written with two bytes missing.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Oct 13, 2026 · NIST NVD

   Detected

   During Xenstore live update the state record for a Xenstore watch with specified watch depth is written with two bytes missing. This results in an inconsistent state when reading the state back in the new Xenstore, causing a crash of Xenstore or wrong Xenstore data.

2. Oct 14, 2026 · NIST NVD

   Updated

   During Xenstore live update the state record for a Xenstore watch with specified watch depth is written with two bytes missing. This results in an inconsistent state when reading the state back in the new Xenstore, causing a crash of Xenstore or wrong Xenstore data.

Sources

• CVE.orgVulnerability recordCVE-2026-79607

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2026-79607

  30-day exploitation probability 0.2%

  first.org
• NIST NVDVulnerability recordCVE-2026-79607

  During Xenstore live update the state record for a Xenstore watch with specified watch depth is written with two bytes missing. This results in an inconsistent state when reading the state back in the new Xenstore, causing a crash of Xenstore or wrong Xenstore data.

  nvd.nist.gov

References

• Reference · openwall.com
• Reference · xenbits.xen.org
• Reference · xenbits.xenproject.org