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{"bugzilla": {"description": "FreeRDP: FreeRDP: Denial of Service via out-of-bounds read in URBDRC channel", "id": "2533927", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2533927"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-125", "details": ["A flaw was found in FreeRDP. A malicious Remote Desktop Protocol (RDP) server can exploit an out-of-bounds read vulnerability in the URBDRC (USB device redirection) channel. By sending a specially crafted message, the server can cause the FreeRDP client to read beyond its allocated memory, leading to a client crash and a denial of service."], "mitigation": {"lang": "en:us", "value": "To mitigate this issue, users should avoid connecting to untrusted or unverified RDP servers. Restricting FreeRDP client connections to known, trusted RDP servers can prevent exploitation of this vulnerability."}, "name": "CVE-2026-91956", "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": "2026-09-15T15:18:11Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-91956\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-91956\nhttps://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-hg4r-vv53-vwf8\nhttps://www.vulncheck.com/advisories/freerdp-before-3.31.0-out-of-bounds-read-via-urbdrc"], "threat_severity": "Moderate"}

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