CVE-2026-91950

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{"bugzilla": {"description": "FreeRDP: FreeRDP: Out-of-bounds read leads to denial of service or information disclosure", "id": "2533954", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2533954"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.1", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H", "status": "draft"}, "cwe": "CWE-125", "details": ["A flaw was found in FreeRDP, where an out-of-bounds read vulnerability exists in the rdpdr_dump_packet function. This is due to a 32-bit unsigned integer wraparound during buffer bounds validation. A malicious RDP server can send a specially crafted RDPDR packet, bypassing security checks and causing the client to read memory beyond the intended buffer. This can result in client crashes, leading to a denial of service, or the disclosure of sensitive heap memory information in logs. Exploitation requires the client to have WLOG_TRACE-level logging enabled."], "mitigation": {"lang": "en:us", "value": "To mitigate this issue, users should avoid connecting to untrusted or potentially malicious RDP servers. Restricting FreeRDP client connections to only known and trusted RDP servers significantly reduces the attack surface. If connecting to untrusted servers is unavoidable, consider using a highly isolated environment for the client."}, "name": "CVE-2026-91950", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-09-15T15:18:07Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-91950\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-91950\nhttps://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-c5gr-hmqp-pwj4\nhttps://www.vulncheck.com/advisories/freerdp-before-3.31.0-out-of-bounds-read-via-uint32-wraparound"], "threat_severity": "Important"}

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