{"id":"CVE-2026-4391","state":"PUBLISHED","title":"TeamSpeak 3 Server ECC Key heap-based overflow","description":"A security vulnerability has been detected in TeamSpeak 3 Server up to 3.13.7. This vulnerability affects unknown code of the component ECC Key Parser. Such manipulation leads to heap-based buffer overflow. The attack may be launched remotely. Upgrading to version 3.13.8 is able to resolve this issue. It is suggested to upgrade the affected component.","publishedAt":"2026-05-27T16:45:07.874Z","updatedAt":"2026-05-27T18:46:24.200Z","severity":{"score":6.9,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X","source":"VulDB"},"assigner":"VulDB","products":["n/a TeamSpeak 3 Server"],"affected":[{"vendor":"n/a","product":"TeamSpeak 3 Server","versions":[{"version":"3.13.0","status":"affected"},{"version":"3.13.1","status":"affected"},{"version":"3.13.2","status":"affected"},{"version":"3.13.3","status":"affected"},{"version":"3.13.4","status":"affected"},{"version":"3.13.5","status":"affected"},{"version":"3.13.6","status":"affected"},{"version":"3.13.7","status":"affected"},{"version":"3.13.8","status":"unaffected"}],"cpes":["cpe:2.3:a:teamspeak_3_server:teamspeak_3_server:*:*:*:*:*:*:*:*"],"modules":["ECC Key Parser"]}],"references":["https://vuldb.com/vuln/366315","https://vuldb.com/vuln/366315/cti","https://modzero.com/en/advisories/mz-26-01-teamspeak/","https://files.teamspeak-services.com/docs/security/TS-SA-2026-001.html","https://www.teamspeak.com/en/downloads/#server"],"weaknesses":["CWE-122","CWE-119"],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/4xxx/CVE-2026-4391.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-4391","state":"PUBLISHED","datePublished":"2026-05-27T16:45:07.874Z","dateUpdated":"2026-05-27T18:46:24.200Z","assignerShortName":"VulDB","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateReserved":"2026-03-18T15:05:58.566Z"},"containers":{"cna":{"title":"TeamSpeak 3 Server ECC Key heap-based overflow","descriptions":[{"lang":"en","value":"A security vulnerability has been detected in TeamSpeak 3 Server up to 3.13.7. This vulnerability affects unknown code of the component ECC Key Parser. Such manipulation leads to heap-based buffer overflow. The attack may be launched remotely. Upgrading to version 3.13.8 is able to resolve this issue. It is suggested to upgrade the affected component."}],"affected":[{"vendor":"n/a","product":"TeamSpeak 3 Server","versions":[{"version":"3.13.0","status":"affected"},{"version":"3.13.1","status":"affected"},{"version":"3.13.2","status":"affected"},{"version":"3.13.3","status":"affected"},{"version":"3.13.4","status":"affected"},{"version":"3.13.5","status":"affected"},{"version":"3.13.6","status":"affected"},{"version":"3.13.7","status":"affected"},{"version":"3.13.8","status":"unaffected"}],"cpes":["cpe:2.3:a:teamspeak_3_server:teamspeak_3_server:*:*:*:*:*:*:*:*"],"modules":["ECC Key Parser"]}],"references":[{"url":"https://vuldb.com/vuln/366315","name":"VDB-366315 | TeamSpeak 3 Server ECC Key heap-based overflow","tags":["vdb-entry"]},{"url":"https://vuldb.com/vuln/366315/cti","name":"VDB-366315 | CTI Indicators (IOB, IOC)","tags":["signature","permissions-required"]},{"url":"https://modzero.com/en/advisories/mz-26-01-teamspeak/","tags":["related"]},{"url":"https://files.teamspeak-services.com/docs/security/TS-SA-2026-001.html","tags":["related"]},{"url":"https://www.teamspeak.com/en/downloads/#server","tags":["patch"]}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":6.9,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X","baseSeverity":"MEDIUM"}},{"cvssV3_1":{"version":"3.1","baseScore":5.3,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:X/RL:O/RC:C","baseSeverity":"MEDIUM"}},{"cvssV3_0":{"version":"3.0","baseScore":5.3,"vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:X/RL:O/RC:C","baseSeverity":"MEDIUM"}},{"cvssV2_0":{"version":"2.0","baseScore":5,"vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:P/E:ND/RL:OF/RC:C"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-122","type":"CWE","lang":"en","description":"Heap-based Buffer Overflow"}]},{"descriptions":[{"cweId":"CWE-119","type":"CWE","lang":"en","description":"Memory Corruption"}]}],"providerMetadata":{"shortName":"VulDB","orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateUpdated":"2026-05-27T16:45:07.874Z"},"timeline":[{"time":"2026-05-27T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-05-27T02:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-05-27T18:26:06.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"Michael Imfeld (modzero)","type":"finder"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-27T18:45:12.171333Z","id":"CVE-2026-4391","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-27T18:46:24.200Z"}}]}}}