TI-2024-05256 Aliases CVE-2024-5661 GHSA-f2p4-q7ff-2gr3

Potential Denial of Service affecting XenServer and Citrix Hypervisor

LOW 26Published 2024-06-13 · Updated 2024-10-28

Key facts

Attack vector: Local
Privileges required: High
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

An issue has been identified in both XenServer 8 and Citrix Hypervisor 8.2 CU1 LTSR which may allow a malicious administrator of a guest VM to cause the host to become slow and/or unresponsive.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00171 6th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Citrix	Citrix Hypervisor	8 – 0; 8.2 CU1 LTSR – XS82ECU1068	—	No fix listed	CNA
Citrix	XenServer	8 – 0; 8.2 CU1 LTSR – XS82ECU1068	—	No fix listed	CNA

Citrix Hypervisor VendorCitrix Affected 8 – 0; 8.2 CU1 LTSR – XS82ECU1068 Fixed in — No fix listed CNA
XenServer VendorCitrix Affected 8 – 0; 8.2 CU1 LTSR – XS82ECU1068 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:citrix:xenserver:8.0:::::::*	8.0	Vulnerable	Citrix
cpe:2.3:o:citrix:hypervisor:8.2:cumulative_update1:::long_term_service:::*	8.2 cumulative_update1	Vulnerable	Citrix

cpe:2.3:a:citrix:xenserver:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Citrix
cpe:2.3:o:citrix:hypervisor:8.2:cumulative_update1:*:*:long_term_service:*:*:* Versions 8.2 cumulative_update1 Vulnerable ·Citrix

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2024-5661
2026-10-03 Alias added: GHSA-f2p4-q7ff-2gr3

References

Advisory 1

https://support.citrix.com/article/CTX677100/xenserver-and-citrix-hypervisor-security-update-for-cve20245661

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences