CVE-2026-33987

FreeRDP: Persistent Cache bmpSize Desync - Heap OOB Write

State: Published
Severity: 7.1 High
Published: Mar 30, 2026
Updated: Mar 31, 2026
Reserved: Mar 24, 2026

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in persistent_cache_read_entry_v3() in libfreerdp/cache/persistent.c, persistent->bmpSize is updated before winpr_aligned_recalloc(). If realloc fails, bmpSize is inflated while bmpData points to the old buffer. This issue has been patched in version 3.24.2.

Scores

CVSS	Score	Vector	Source
3.1	7.1 High	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H	GitHub_M

Weaknesses

CWE-122 Heap-based Buffer Overflow
CWE-131 Incorrect Calculation of Buffer Size

Affected Products

Product	Versions
FreeRDPFreeRDP	< 3.24.2Affected

References

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