This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-78002 →
Categories
DEBIAN-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...

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 rsyslog
[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]
Debian:13 rsyslog
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.2504.0-1+deb13u2"}]}]
Debian:14 rsyslog
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.2608.0-4"}]}]

References

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