Vulnerability Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, FreeRDP's RDPEAR NDR parser accepts one non-null NDR pointer ref-id for multiple logical pointer fields without tracking the pointed object's expected NDR type or ownership. When the same ref-id is reused across two pointer fields, the parser assigns the same heap object to both output fields. The generic destructor later walks each field independently and destroys/frees both pointers. This causes a malicious-server-triggerable heap use-after-free / double-free in the FreeRDP client's RDPEAR authentication-redirection path. This vulnerability is fixed in 3.26.0.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Freerdp | Freerdp | < 3.26.0 |
Related Weaknesses (CWE)
References
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-j9q5-7g8m-jc9vExploitMitigationVendor Advisory
- https://access.redhat.com/errata/RHSA-2026:36203
- https://access.redhat.com/errata/RHSA-2026:46393
- https://access.redhat.com/security/cve/CVE-2026-44422
- https://bugzilla.redhat.com/show_bug.cgi?id=2483467
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-j9q5-7g8m-jc9vExploitMitigationVendor Advisory
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44422.json
FAQ
What is CVE-2026-44422?
CVE-2026-44422 is a vulnerability with a CVSS score of 7.5 (HIGH). FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, FreeRDP's RDPEAR NDR parser accepts one non-null NDR pointer ref-id for multiple logical pointer fields without tracki...
How severe is CVE-2026-44422?
CVE-2026-44422 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-44422?
Check the references section above for vendor advisories and patch information. Affected products include: Freerdp Freerdp.