{"id":"CVE-2026-70462","aliases":["GHSA-j9wh-5jmp-2m64"],"url":"https://o3.security/vulnerability/CVE-2026-70462","summary":"rsync 3.1.0 < 3.5.0 Signed Integer Overflow via MSG_IO_TIMEOUT","details":"rsync 3.1.0 before 3.5.0 contains a signed integer overflow vulnerability in the I/O timeout implementation that allows attackers to permanently disable connection timeouts by injecting MSG_IO_TIMEOUT messages carrying non-positive (zero or negative) values. Attackers can craft malicious MSG_IO_TIMEOUT messages that cause the timeout variable to wrap to a non-positive value, preventing the timeout check from firing and enabling idle or stalled connections to hold daemon slots indefinitely, leading to resource exhaustion.","published":"2026-08-13T14:42:28.449Z","modified":"2026-08-15T04:06:56.913287911Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70462.json"},{"type":"PACKAGE","url":"https://github.com/RsyncProject/rsync"},{"type":"ADVISORY","url":"https://github.com/RsyncProject/rsync/releases/tag/v3.5.0"},{"type":"ADVISORY","url":"https://github.com/RsyncProject/rsync/security/advisories/GHSA-j9wh-5jmp-2m64"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-70462"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/rsync-signed-integer-overflow-via-msg-io-timeout"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-15T04:06:56.913287911Z"}}