Out-of-bounds read in FreeRDP - CVE-2026-22858
Published: February 10, 2026
Vulnerability identifier: #VU122509
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-22858
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: FreeRDP
Affected software:
FreeRDP
FreeRDP
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service attack.
The vulnerability exists due to a boundary condition within the crypto_base64_decode() function. A remote attacker can trick the victim into connecting to a malicious server, trigger an out-of-bounds read error and crash the application.
How to mitigate CVE-2026-22858
Install updates from vendor's website.