{"id":"CVE-2019-15681","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-15681","generatedAt":"2026-10-28T21:31:39.672Z","title":"LibVNC commit before d01e1bb4246323ba6fcee3b82ef1faa9b1dac82a contains a memory leak (CWE-655) in VNC server code, which allow an attacker to read stack memory and can be abused for information disclosure.","description":"LibVNC commit before d01e1bb4246323ba6fcee3b82ef1faa9b1dac82a contains a memory leak (CWE-655) in VNC server code, which allow an attacker to read stack memory and can be abused for information disclosure. Combined with another vulnerability, it can be used to leak stack memory and bypass ASLR. This attack appear to be exploitable via network connectivity. These vulnerabilities have been fixed in commit d01e1bb4246323ba6fcee3b82ef1faa9b1dac82a.","published":"2019-10-29T19:15:18.000Z","lastModified":"2026-06-17T02:20:52.000Z","status":"Modified","sourceIdentifier":"vulnerability@kaspersky.com","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},"cwe":["CWE-665"],"affected":["libvnc project/libvncserver","canonical/ubuntu linux","debian/debian linux","siemens/simatic itc1500 firmware","siemens/simatic itc1500 pro firmware","siemens/simatic itc1900 firmware","siemens/simatic itc1900 pro firmware","siemens/simatic itc2200 firmware","siemens/simatic itc2200 pro firmware"],"epss":{"score":0.02906,"percentile":0.86901,"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 (2.91%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00027.html","tags":["Mailing List","Third Party Advisory"],"source":"vulnerability@kaspersky.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00073.html","tags":["Mailing List","Third Party Advisory"],"source":"vulnerability@kaspersky.com"},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf","tags":["Third Party Advisory"],"source":"vulnerability@kaspersky.com"},{"url":"https://github.com/LibVNC/libvncserver/commit/d01e1bb4246323ba6fcee3b82ef1faa9b1dac82a","tags":["Patch","Third Party Advisory"],"source":"vulnerability@kaspersky.com"},{"url":"https://lists.debian.org/debian-lts-announce/2019/10/msg00039.html","tags":["Mailing List","Third Party Advisory"],"source":"vulnerability@kaspersky.com"},{"url":"https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html","tags":["Mailing List","Third Party Advisory"],"source":"vulnerability@kaspersky.com"},{"url":"https://lists.debian.org/debian-lts-announce/2019/11/msg00032.html","tags":["Mailing List","Third Party Advisory"],"source":"vulnerability@kaspersky.com"},{"url":"https://lists.debian.org/debian-lts-announce/2019/12/msg00028.html","tags":["Mailing List","Third Party Advisory"],"source":"vulnerability@kaspersky.com"},{"url":"https://usn.ubuntu.com/4407-1/","tags":["Third Party Advisory"],"source":"vulnerability@kaspersky.com"},{"url":"https://usn.ubuntu.com/4547-1/","tags":["Third Party Advisory"],"source":"vulnerability@kaspersky.com"},{"url":"https://usn.ubuntu.com/4573-1/","tags":["Third Party Advisory"],"source":"vulnerability@kaspersky.com"},{"url":"https://usn.ubuntu.com/4587-1/","tags":["Third Party Advisory"],"source":"vulnerability@kaspersky.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00027.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00073.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/LibVNC/libvncserver/commit/d01e1bb4246323ba6fcee3b82ef1faa9b1dac82a","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2019/10/msg00039.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2019/11/msg00032.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2019/12/msg00028.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/4407-1/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/4547-1/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/4573-1/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/4587-1/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-15681","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."}