CVE-2026-22856
8.1
HIGH
CVSS 3.1
EPSS 0.09%
Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a race in the serial channel IRP thread tracking allows a heap use‑after‑free when one thread removes an entry from serial->IrpThreads while another reads it. This vulnerability is fixed in 3.20.1.
How to fix CVE-2026-22856
To remediate CVE-2026-22856, upgrade the affected package to a fixed version below.
- Debian/freerdp2—no fix listed
- —upgrade to 3.15.0+dfsg-2.1+deb13u1 or later
Is CVE-2026-22856 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0
- from 0, < 3.15.0+dfsg-2.1+deb13u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |