CVE-2026-79680

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{"bugzilla": {"description": "qtvncserver: Qt VNC Server: Authentication bypass via RFB protocol violation", "id": "2540010", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2540010"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N", "status": "draft"}, "cwe": "CWE-358", "details": ["A flaw was found in the Qt VNC Server module. A remote attacker, by using a specially modified VNC client that violates the Remote Framebuffer (RFB) protocol, can bypass the password authentication mechanism. This allows the attacker to gain unauthorized remote access to the shared application, compromising the confidentiality and integrity of the session."], "name": "CVE-2026-79680", "package_state": [{"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "qt5", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "qt6", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-09-24T10:56:08Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-79680\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-79680\nhttps://codereview.qt-project.org/c/qt/tqtc-qtvncserver/+/759160\nhttps://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products#CVE-2026-79680:"], "threat_severity": "Moderate"}

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