Vulnerability · CVE-2026-79610
XSA-501 was about issues with v1 -> v2 and v2 -> v1 changes racing certain other grant table operations.
Published Oct 13, 2026 · catalog updated Oct 14, 2026 · XSA-501 was about issues
Check if you run it
No confirmed exploitation is on record for CVE-2026-79610. EPSS is 0.18%. Act only if a listed version of XSA-501 was about issues is installed.
Gaps on this record
- The stored product name is a package slug. The name on this page is taken from the title (XSA-501 was about issues).
- No version range is stored. A customer cannot check an installed version against this record.
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- Unknown—
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.18%
- Remediation
- Advisory link
- Affected products
- See sources for product scope
XSA-501 was about issues with v1 -> v2 and v2 -> v1 changes racing certain other grant table operations. Sadly a v2 -> v1 -> v2 change has yet another effect which wasn't accounted for: During the first change, status pages would be freed. During the second change they would be
No affected version ranges are stored yet. Use the vendor advisory before you decide this record does not apply.
How to fix CVE-2026-79610
Recommended remediation
A patch or advisory reference is linked. Open the original publisher for availability by product version.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2026-79610. EPSS is 0.18%. Act only if a listed version of XSA-501 was about issues is installed.
Which versions are affected?
Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 0.18%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
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.
Oct 13, 2026 · NIST NVD
Detected
XSA-501 was about issues with v1 -> v2 and v2 -> v1 changes racing certain other grant table operations. Sadly a v2 -> v1 -> v2 change has yet another effect which wasn't accounted for: During the first change, status pages would be freed. During the second change they would be allocated again. Hence across the full pair of change the addresses of the status pages may change, rendering stale previ
Oct 14, 2026 · NIST NVD
Updated
XSA-501 was about issues with v1 -> v2 and v2 -> v1 changes racing certain other grant table operations. Sadly a v2 -> v1 -> v2 change has yet another effect which wasn't accounted for: During the first change, status pages would be freed. During the second change they would be allocated again. Hence across the full pair of change the addresses of the status pages may change, rendering stale previ
Sources
- Canadian Centre for Cyber SecurityGovernment advisoryCVE-2026-79610
Serial number: AV26-1034 Date: October 13, 2026 As of October 13, 2026, Citrix is affected by vulnerabilities in the following products: UniconOS Prior to 2603 LTSR CU2 Prior to 2607.2 CR XenServer Version 8.4 XenServer Version 9 The Cyber Centre encourages users and administrato
cyber.gc.ca - CVE.orgVulnerability recordCVE-2026-79610
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2026-79610
30-day exploitation probability 0.2%
first.org - NIST NVDVulnerability recordCVE-2026-79610
XSA-501 was about issues with v1 -> v2 and v2 -> v1 changes racing certain other grant table operations. Sadly a v2 -> v1 -> v2 change has yet another effect which wasn't accounted for: During the first change, status pages would be freed. During the second change they would be
nvd.nist.gov
References
Freshness
Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.