{"id":"CVE-2026-73070","state":"PUBLISHED","title":"Vim: Stack Buffer Overflow in the Vim Socket Server","description":"Vim is an open source, command line text editor. Prior to 9.2.0842, the socket server backend in src/socketserver.c accepts unbounded client connections in socketserver_accept(), causing descriptors to overflow fd_set structures in src/channel.c and fixed-size struct pollfd arrays in src/os_unix.c, which allows a local process that can connect to the server socket to corrupt stack memory or terminate the Vim server. This issue is fixed in version 9.2.0842.","publishedAt":"2026-08-11T15:21:49.070Z","updatedAt":"2026-08-11T15:58:28.409Z","severity":{"score":6.8,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["vim vim"],"affected":[{"vendor":"vim","product":"vim","versions":[{"version":"< 9.2.0842","status":"affected"}]}],"references":["https://github.com/vim/vim/security/advisories/GHSA-49m8-wwxj-mr69","https://github.com/vim/vim/commit/5598618b2daf8e36b3bf0251caaefcf0bf8e85e4","https://github.com/vim/vim/releases/tag/v9.2.0842"],"weaknesses":["CWE-121"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/73xxx/CVE-2026-73070.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-73070","state":"PUBLISHED","datePublished":"2026-08-11T15:21:49.070Z","dateUpdated":"2026-08-11T15:58:28.409Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-08-10T19:37:41.444Z"},"containers":{"cna":{"title":"Vim: Stack Buffer Overflow in the Vim Socket Server","descriptions":[{"lang":"en","value":"Vim is an open source, command line text editor. Prior to 9.2.0842, the socket server backend in src/socketserver.c accepts unbounded client connections in socketserver_accept(), causing descriptors to overflow fd_set structures in src/channel.c and fixed-size struct pollfd arrays in src/os_unix.c, which allows a local process that can connect to the server socket to corrupt stack memory or terminate the Vim server. This issue is fixed in version 9.2.0842."}],"affected":[{"vendor":"vim","product":"vim","versions":[{"version":"< 9.2.0842","status":"affected"}]}],"references":[{"url":"https://github.com/vim/vim/security/advisories/GHSA-49m8-wwxj-mr69","name":"https://github.com/vim/vim/security/advisories/GHSA-49m8-wwxj-mr69","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/vim/vim/commit/5598618b2daf8e36b3bf0251caaefcf0bf8e85e4","name":"https://github.com/vim/vim/commit/5598618b2daf8e36b3bf0251caaefcf0bf8e85e4","tags":["x_refsource_MISC"]},{"url":"https://github.com/vim/vim/releases/tag/v9.2.0842","name":"https://github.com/vim/vim/releases/tag/v9.2.0842","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":6.8,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-121","lang":"en","description":"CWE-121: Stack-based Buffer Overflow","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-08-11T15:21:49.070Z"},"source":{"advisory":"GHSA-49m8-wwxj-mr69","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-11T15:56:19.530887Z","id":"CVE-2026-73070","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-11T15:58:28.409Z"}}]}}}