CVE-2026-44420

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.

• CWE-122
• CWE-131

• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-mvpx-xj7r-3p3rExploit, Mitigation, Vendor Advisory
• https://access.redhat.com/errata/RHSA-2026:36203
• https://access.redhat.com/errata/RHSA-2026:46393
• https://access.redhat.com/security/cve/CVE-2026-44420
• https://bugzilla.redhat.com/show_bug.cgi?id=2483480
• https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-h6wq-j5mv-f3q8
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44420.json

Published

May 29, 2026

Last Modified

Jul 27, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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