{"id":"CVE-2016-9941","url":"https://www.cyber-defence.io/tools/cve/CVE-2016-9941","generatedAt":"2026-10-28T19:02:57.195Z","title":"Heap-based buffer overflow in rfbproto.c in LibVNCClient in LibVNCServer before 0.9.11 allows remote servers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted FramebufferUpdate message containing a…","description":"Heap-based buffer overflow in rfbproto.c in LibVNCClient in LibVNCServer before 0.9.11 allows remote servers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted FramebufferUpdate message containing a subrectangle outside of the client drawing area.","published":"2016-12-31T18:59:00.000Z","lastModified":"2026-06-17T00:56:49.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-119"],"affected":["libvncserver project/libvncserver"],"epss":{"score":0.03732,"percentile":0.89772,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (3.73%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://www.debian.org/security/2017/dsa-3753","source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/95170","source":"cve@mitre.org"},{"url":"https://github.com/LibVNC/libvncserver/pull/137","source":"cve@mitre.org"},{"url":"https://github.com/LibVNC/libvncserver/releases/tag/LibVNCServer-0.9.11","source":"cve@mitre.org"},{"url":"https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html","source":"cve@mitre.org"},{"url":"https://security.gentoo.org/glsa/201702-24","source":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/4587-1/","source":"cve@mitre.org"},{"url":"http://www.debian.org/security/2017/dsa-3753","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/95170","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/LibVNC/libvncserver/pull/137","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/LibVNC/libvncserver/releases/tag/LibVNCServer-0.9.11","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/201702-24","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/4587-1/","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2016-9941","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}