CVE-2024-32040

FreeRDP vulnerable to integer underflow in nsc_rle_decode

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`).

Category

8.1
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.31%
Vendor Advisory github.com
Affected: FreeRDP FreeRDP
Published at:
Updated at:

References

Link Tags
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-23c5-cp23-h2h5 mitigation vendor advisory
https://github.com/FreeRDP/FreeRDP/pull/10077 issue tracking
https://github.com/FreeRDP/FreeRDP/releases/tag/2.11.6 release notes
https://github.com/FreeRDP/FreeRDP/releases/tag/3.5.0 release notes
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZKI4UISUXYNBPN4K6TIQKDRTIJ6CDCKJ/ third party advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7SIS6NUNLUBOV4CPCSWKDE6T6C2W3WTR/ third party advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PX3U6YPZQ7PEJBVKSBUOLWVH7DHROHY5/ third party advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5JL476WVJSIE7SBUKVJRVA6A52V2HOLZ/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2024-32040?
CVE-2024-32040 has been scored as a high severity vulnerability.
How to fix CVE-2024-32040?
To fix CVE-2024-32040, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-32040 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-32040 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-32040?
CVE-2024-32040 affects FreeRDP FreeRDP.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.