CVE-2026-29775

HIGH EPSS 22.5%
Published Mar 13, 20263mo ago · Modified Mar 17, 20263mo ago
8.2 CVSS 3.1
High
Find Similar
Published Mar 13, 2026 3mo ago
Last Modified Mar 17, 2026 3mo ago

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, a client-side heap out-of-bounds read/write occurs in FreeRDP's bitmap cache subsystem due to an off-by-one boundary check in bitmap_cache_put. A malicious server can send a CACHE_BITMAP_ORDER (Rev1) with cacheId equal to maxCells, bypassing the guard and accessing cells[] one element past the allocated array. This vulnerability is fixed in 3.24.0.

CVSS Details

Base Score
8.2
Exploitability
3.9
Impact
4.2
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity Low
Availability High

Threat Intelligence

EPSS Exploit Probability
22.5% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-787 Out-of-bounds Write Memory Safety

Affected Products 1

VendorProductVersionRange
freerdpfreerdp* <3.24.0

References 2

  • github.com https://github.com/FreeRDP/FreeRDP/commit/ffad58fd2b329efd81a3239e9d7e3c927b8e503f
    Patch
  • github.com https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-h666-rfw3-jhvj
    ExploitPatchVendor Advisory

Remediation

  • github.com https://github.com/FreeRDP/FreeRDP/commit/ffad58fd2b329efd81a3239e9d7e3c927b8e503f
    Patch
  • github.com https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-h666-rfw3-jhvj
    ExploitPatchVendor Advisory