{"id":"CVE-2026-115505","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-115505","generatedAt":"2026-10-28T01:53:39.670Z","title":"libsmb2 before 6.3 contains integer overflow vulnerabilities in the DCE/RPC NDR decoder in lib/dcerpc.c that allow heap out-of-bounds reads and writes.","description":"libsmb2 before 6.3 contains integer overflow vulnerabilities in the DCE/RPC NDR decoder in lib/dcerpc.c that allow heap out-of-bounds reads and writes. A malicious SMB server or machine-in-the-middle on unsigned connections can send crafted NetrShareEnum replies with wrapping actual_count or max_count values when clients call smb2_share_enum_async(), corrupting heap memory.","published":"2026-10-22T20:17:06.000Z","lastModified":"2026-10-23T13:19:13.000Z","status":"Deferred","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":7.2,"severity":"HIGH","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-190"],"affected":[],"epss":{"score":0.00207,"percentile":0.10717,"date":"2026-10-26","history":[{"date":"2026-10-23","score":0.0021,"percentile":0.10664}]},"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 (0.21%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-22T20:17:06.000Z","detail":{"score":"7.2","severity":"HIGH","publishedAt":"2026-10-22T20:17:06.470Z"},"summary":"New CVE, high severity (CVSS 7.2)."}],"references":[{"url":"https://github.com/sahlberg/libsmb2","source":"disclosure@vulncheck.com"},{"url":"https://github.com/sahlberg/libsmb2/commit/a79f6914cb5ed3f74293d15cdea901261ce179ff","source":"disclosure@vulncheck.com"},{"url":"https://github.com/sahlberg/libsmb2/issues/496","source":"disclosure@vulncheck.com"},{"url":"https://github.com/sahlberg/libsmb2/releases/tag/libsmb2-6.3","source":"disclosure@vulncheck.com"},{"url":"https://hackmd.io/@haindpwn/libsmb2-dcerpc-ndr-count-overflow-oob","source":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/libsmb2-before-6.3-integer-overflow-in-dce-rpc-ndr-decoder-via-netrshareenum","source":"disclosure@vulncheck.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-115505","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."}