CVE-2023-40575: Out-Of-Bounds Read in FreeRDP

Severity: critical (CVSS 9.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-08-31 · updated 2026-06-17
Weakness: CWE-125

Description

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions are subject to an Out-Of-Bounds Read in the `general_YUV444ToRGB_8u_P3AC4R_BGRX` function. This issue is likely down to insufficient data for the `pSrc` variable and results in crashes. This issue has been addressed in version 3.0.0-beta3. Users are advised to upgrade. There are no known workarounds for this issue.

Affected products

FreeRDP: 3.0.0-beta1, 3.0.0-beta2

References

https://github.com/FreeRDP/FreeRDP/blob/5be5553e0da72178a4b94cc1ffbdace9ceb153e5/libfreerdp/primitives/prim_YUV.c#L414-L445
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-c6vw-92h9-5w9v
https://security.gentoo.org/glsa/202401-16
https://github.com/FreeRDP/FreeRDP/blob/5be5553e0da72178a4b94cc1ffbdace9ceb153e5/libfreerdp/primitives/prim_YUV.c#L414-L445
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-c6vw-92h9-5w9v
https://security.gentoo.org/glsa/202401-16

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