CVE-2026-79607CWE-119

CVE-2026-79607

Medium · published October 13, 2026

CVSS v3.1
5.5
EPSS
0%
Percentile
1.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00123 · 1.9th percentile
Weakness
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer
Published
2026-10-13T20:17Z
References (3)
https://xenbits.xenproject.org/xsa/advisory-514.html · [email protected]http://www.openwall.com/lists/oss-security/2026/10/13/3 · af854a3a-2127-422b-91ae-364da2661108http://xenbits.xen.org/xsa/advisory-514.html · af854a3a-2127-422b-91ae-364da2661108
EPSS history
Timeline
  • 15 OCT 03:34Z
    EPSS moved — → 0%
    epss
  • 13 OCT 15:43Z
    Xenstore: Guests can crash xenstored during Live Update
    cvelistv5
  • 13 OCT 15:43Z
    Xenstore: Guests can crash xenstored during Live Update
    cvelistv5