CVE-2026-22854 FreeRDP has a heap-buffer-overflow in drive_process_irp_read
A heap-buffer-overflow in FreeRDP allows a malicious server to overwrite heap memory via oversized read lengths, potentially leading to code execution or crashes.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-22854?
CVE-2026-22854 is a medium-severity memory corruption vulnerability in Freerdp Freerdp, published on 14 Jan 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a heap-buffer-overflow occurs in drive read when a server-controlled read length is used to read file data into an IRP output stream buffer without a hard upper bound, allowing an oversized read to overwrite heap memory. This vulnerability is fixed in 3.20.1.
Weakness: CWE-122
Which versions are affected by CVE-2026-22854?
It affects 1 product.
Products include Freerdp Freerdp.
How do I fix CVE-2026-22854?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-22854 being exploited?
There is no known exploitation of CVE-2026-22854 in the wild and no public exploit code.
Other vulnerabilities in Freerdp Freerdp
- CVE-2021-37594 Other in n/a
- CVE-2021-37595 Other in n/a
- CVE-2026-67305 FreeRDP Windows Client before 3.29.0 Heap Buffer Overflow via Cliprdr
- CVE-2026-66402 FreeRDP before 3.29.0 TLS Certificate Identity Validation Bypass
- CVE-2026-67289 FreeRDP before 3.29.0 HTTP Proxy Request Injection via Redirection
Sources
Also known as DEBIAN-CVE-2026-22854, GHSA-47vj-g3c3-3rmf, MINI-2gff-w3wx-vhvj, OESA-2026-1401, OESA-2026-1402, OESA-2026-1403 and 2 more.