{"id":"CVE-2026-44420","title":"FreeRDP is a free implementation of the Remote Desktop Protocol","summary":"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 t…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-122","CWE-131"],"vendor":"freerdp","product":"freerdp","affected":["freerdp < 3.26.0"],"patched":["freerdp 3.26.0"],"published":"2026-05-29","updated":"2026-11-03","sourceUpdated":"2026-11-03T23:17:44.130","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-44420","references":[{"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-mvpx-xj7r-3p3r","label":"security-advisories@github.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:36203","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:46393","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/security/cve/CVE-2026-44420","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2483480","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-h6wq-j5mv-f3q8","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44420.json","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"total","timestamp":"2026-06-02T03:55:49.050369Z"},"epss":0.04557,"epssPercentile":0.91623,"ingestedAt":"2026-07-08T13:51:10.775Z","slug":"CVE-2026-44420","body":"## Overview\n\nFreeRDP 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.\n\n## Affected\n\n- `freerdp < 3.26.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `freerdp 3.26.0`","depth":"midnight","depthScore":61,"depthScoreParts":{"impact":48.4,"likelihood":0.9,"exploitation":12,"ransomware":0},"changes":[{"seq":232716,"id":"CVE-2026-44420","ts":1793860737016,"field":"exploit_available","old":"false","new":"true"}]}