by Kastro
Paper/Archive/CVE-2026-22857

CVE-2026-22857

FreeRDP FreeRDP — FreeRDP has a heap-use-after-free in irp_thread_func

EPSS 0.5%public exploitCVSS 9.8
critical.is priorityof 100
48
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 44.9.449 × 209.0Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a heap use-after-free occurs in irp_thread_func because the IRP is freed by irp->Complete() and then accessed again on the error path. This vulnerability is fixed in 3.20.1.

Affected

ProductAffectedFixed inSource
FreeRDP< 3.20.1–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub_M (CNA)6.8CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: total

References

refgithub.com/FreeRDP/FreeRDP/security/advisories/GHSA-4gxq-jhq6-4cr8refgithub.com/FreeRDP/FreeRDP/releases/tag/3.20.1