FreeRDP vulnerable to integer underflow in nsc_rle_decode
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.1epss 1.9%
exploitation probability
1.9%top 21% of all CVEs
observed exploitation
nono source reports it
FreeRDP is a free implementation of the Remote Desktop Protocol. FreeRDP based clients that use a version of FreeRDP prior to 3.5.0 or 2.11.6 and have connections to servers using the `NSC` codec are vulnerable to integer underflow. Versions 3.5.0 and 2.11.6 patch the issue. As a workaround, do not use the NSC codec (e.g. use `-nsc`).
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
FreeRDP · FreeRDPReferences
https://github.com/FreeRDP/FreeRDP/pull/10077https://github.com/FreeRDP/FreeRDP/releases/tag/2.11.6https://github.com/FreeRDP/FreeRDP/releases/tag/3.5.0https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-23c5-cp23-h2h5https://lists.debian.org/debian-lts-announce/2025/02/msg00016.htmlhttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5JL476WVJSIE7SBUKVJRVA6A52V2HOLZ/https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7SIS6NUNLUBOV4CPCSWKDE6T6C2W3WTR/https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PX3U6YPZQ7PEJBVKSBUOLWVH7DHROHY5/https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZKI4UISUXYNBPN4K6TIQKDRTIJ6CDCKJ/