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{"bugzilla": {"description": "FreeRDP: FreeRDP: Denial of service and potential code execution via malicious RDP file", "id": "2533958", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2533958"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.6", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H", "status": "draft"}, "cwe": "CWE-787", "details": ["A flaw was found in FreeRDP. This vulnerability allows a remote attacker to trigger out-of-bounds memory access by crafting a malicious Remote Desktop Protocol (RDP) connection file. When a user opens this file, the FreeRDP client fails to properly validate array values, leading to a heap buffer overflow. This can result in a denial of service, causing the application to crash, and potentially lead to information disclosure or arbitrary code execution."], "mitigation": {"lang": "en:us", "value": "To mitigate this issue, users should exercise caution and avoid opening RDP connection files from untrusted or unknown sources. This vulnerability requires user interaction with a malicious file to be exploited."}, "name": "CVE-2026-91958", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-09-15T15:18:13Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-91958\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-91958\nhttps://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-23pf-q83q-x45r\nhttps://www.vulncheck.com/advisories/freerdp-3.11.0-through-3.30.0-heap-buffer-overflow-via-monitor-index"], "threat_severity": "Moderate"}

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