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Status published
High
CVE-2024-32040
FreeRDP vulnerable to integer underflow in nsc_rle_decode
Vulnerability Description
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`).
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-23c5-cp23-h2h5
- https://github.com/FreeRDP/FreeRDP/pull/10077
- https://github.com/FreeRDP/FreeRDP/releases/tag/2.11.6
- https://github.com/FreeRDP/FreeRDP/releases/tag/3.5.0
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZKI4UISUXYNBPN4K6TIQKDRTIJ6CDCKJ/
- 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/5JL476WVJSIE7SBUKVJRVA6A52V2HOLZ/
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Affected Vendor
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View all reports →Affected Software
FreeRDP
Vulnerable Versions:
>= 3.0.0, 3.5.0, < 2.11.6
Timeline
Official Publish:
April 22nd, 2024
Last Modified:
November 3rd, 2025
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H