{"id":"CVE-2026-78002","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-78002","summary":"A flaw was found in rsyslog. An unauthenticated remote attacker can trigger a heap buffer overflow in the RainerScript `replace()` function by sending specially crafted syslog messages.…","details":"A flaw was found in rsyslog. An unauthenticated remote attacker can trigger a heap buffer overflow in the RainerScript `replace()` function by sending specially crafted syslog messages. This vulnerability arises from an incorrect buffer size calculation during string replacement, causing memory corruption. Successful exploitation can lead to a denial of service (DoS) for the affected system.","published":"2026-08-27T17:20:29.367","modified":"2026-08-27T17:20:29.367","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2026-78002"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2521135"},{"type":"WEB","url":"https://github.com/rsyslog/rsyslog/security/advisories/GHSA-g72f-gc6v-f2w3"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-27T17:20:29.367"}}