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.
Metrics
CVSS 3.1 8.8/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| FreeRDP | FreeRDP | < 3.26.0 |
| Red Hat | Red Hat Enterprise Linux 10 | — |
| Red Hat | Red Hat Enterprise Linux 6 | — |
| Red Hat | Red Hat Enterprise Linux 7 | — |
| Red Hat | Red Hat Enterprise Linux 8 | — |
| Red Hat | Red Hat Enterprise Linux 9 | — |
References
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-j9q5-7g8m-jc9vExploit, Mitigation, Vendor 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-jc9vExploit, Mitigation, Vendor Advisory
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44422.json
Timeline
- Published
- May 29, 2026
- Last modified
- Jul 27, 2026
- NVD status
- Modified