CVE-2026-78002
HIGH
NVD
CVSS Score
7.5
Severity
HIGH
Published
Aug 27, 2026
Vendor
unknown
Description
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.