{"id":"CVE-2026-115505","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-115505","summary":"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…","details":"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":"2026-10-22T20:17:06.470","modified":"2026-10-22T20:17:06.470","cvss":{"score":7.6,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/sahlberg/libsmb2/commit/a79f6914cb5ed3f74293d15cdea901261ce179ff","label":"sahlberg/libsmb2@a79f691"},"references":[{"type":"WEB","url":"https://github.com/sahlberg/libsmb2"},{"type":"WEB","url":"https://github.com/sahlberg/libsmb2/commit/a79f6914cb5ed3f74293d15cdea901261ce179ff"},{"type":"WEB","url":"https://github.com/sahlberg/libsmb2/issues/496"},{"type":"WEB","url":"https://github.com/sahlberg/libsmb2/releases/tag/libsmb2-6.3"},{"type":"WEB","url":"https://hackmd.io/@haindpwn/libsmb2-dcerpc-ndr-count-overflow-oob"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/libsmb2-before-6.3-integer-overflow-in-dce-rpc-ndr-decoder-via-netrshareenum"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-10-22T20:17:06.470"}}