CVE-2026-92709: high-severity vulnerability in rsyslog
Rsyslog: DynFile Path Traversal → Arbitrary File Write as Root → RCE
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.1epss 0.4%
Rsyslog is a rocket-fast system for log processing. From versions 1.15.0 to 8.2610.0, rsyslog's omfile dynaFile facility intentionally allows templates to generate flexible output paths. This supports valid deployments that route logs into different directories or use dynamically generated file names. A deployment becomes unsafe when a dynaFile template uses a value influenced by untrusted input as a path component without explicit secure-path handling. In that configuration, the rendered path can escape the operator's intended log directory. This is not limited to the RFC5424 HOSTNAME field. Any untrusted value that reaches a dynaFile path component can create the condition. At time of publication, there are no publicly available patches.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
rsyslog · rsyslogRelated CVEs — rsyslog
In the same product, most dangerous first.
CVE-2022-24903HIGHBuffer overflow in TCP syslog server (receiver) components in rsyslogEPSS 3.9%CVE-2026-55556HIGHRsyslog: Heap buffer overflow in imhttp plugin Basic Authentication handlingEPSS 0.9%CVE-2026-61548HIGHRsyslog: mmpstrucdata stack buffer overflow with oversized RFC5424 structured dataEPSS 0.6%CVE-2011-1488—CVE-2011-1488EPSS 0.5%CVE-2011-1489—CVE-2011-1489EPSS 0.5%CVE-2011-1490—CVE-2011-1490EPSS 0.4%