HIGH 7.5 NVD
CVE-2026-78002
A flaw was found in rsyslog. An unauthenticated remote attacker can trigger a heap buffer overflow in the RainerScript `replace()` function by sending specially
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.
References
- https://access.redhat.com/security/cve/CVE-2026-78002
- https://bugzilla.redhat.com/show_bug.cgi?id=2521135
- https://github.com/rsyslog/rsyslog/security/advisories/GHSA-g72f-gc6v-f2w3
This high severity vulnerability with a CVSS score of 7.5 was published on 2026-08-27 via NVD.
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