CVE-2024-32040

Name: CVE-2024-32040
Creator: NVD / NIST
Published: 2024-04-22T21:15:49.29+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.92%

Last modified Jun 17, 2026

CVE-2024-32040 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 1.92% chance of exploitation in the next 30 days.

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`).

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.92%

77.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Freerdp	Freerdp	< 2.11.6
Freerdp	Freerdp	>= 3.0.0, < 3.5.0
Fedoraproject	Fedora	38
Fedoraproject	Fedora	39
Fedoraproject	Fedora	40

References

https://github.com/FreeRDP/FreeRDP/pull/10077Issue Tracking
https://github.com/FreeRDP/FreeRDP/releases/tag/2.11.6Release Notes
https://github.com/FreeRDP/FreeRDP/releases/tag/3.5.0Release Notes
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-23c5-cp23-h2h5Mitigation, Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5JL476WVJSIE7SBUKVJRVA6A52V2HOLZ/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/ZKI4UISUXYNBPN4K6TIQKDRTIJ6CDCKJ/Third Party Advisory
https://github.com/FreeRDP/FreeRDP/pull/10077Issue Tracking
https://github.com/FreeRDP/FreeRDP/releases/tag/2.11.6Release Notes
https://github.com/FreeRDP/FreeRDP/releases/tag/3.5.0Release Notes
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-23c5-cp23-h2h5Mitigation, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2025/02/msg00016.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5JL476WVJSIE7SBUKVJRVA6A52V2HOLZ/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/ZKI4UISUXYNBPN4K6TIQKDRTIJ6CDCKJ/Third Party Advisory

Timeline

Published: Apr 22, 2024
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2024-32040?

How severe is CVE-2024-32040?

CVE-2024-32040 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.92% probability of exploitation in the next 30 days.

How do I fix CVE-2024-32040?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-32040?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST