CVE-2026-44420
FreeRDP cliprdr server heap-buffer-overflow via undersized capabilitySetLength in CB_CLIP_CAPS
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, a malicious RDP client can trigger a heap-buffer-overflow write in FreeRDP's server-side clipboard (cliprdr) channel by sending a CB_CLIP_CAPS PDU with a too-small capabilitySetLength. This can crash the server process (remote DoS) and may be exploitable for code execution because it corrupts heap memory. This vulnerability is fixed in 3.26.0.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
FreeRDP · FreeRDPpublic PoCs found — 1
cve_referencegithub.com/yhirose/cpp-httplib/security/advisories/GHSA-h6wq-j5mv-f3q8unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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