CVE-2011-1489: rsyslog vulnerability

CVE-2011-1489: A memory leak in rsyslog before 5.7.6 was found in the way deamon processed log messages were logged when m...

A memory leak in rsyslog before 5.7.6 was found in the way deamon processed log messages were logged when multiple rulesets were used and some output batches contained messages belonging to more than one ruleset. A local attacker could cause denial of the rsyslogd daemon service via a log message belonging to more than one ruleset.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 22:28 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2011-1489 is an rsyslog memory leak that can make the logging daemon unavailable. The issue affects rsyslog before 5.7.6 and requires local conditions tied to messages handled across multiple rulesets. Business impact is loss or interruption of system logging, which can weaken monitoring, incident response, and audit trails. Exposure is most likely on legacy Linux systems running rsyslog before 5.7.6, especially configurations using multiple rulesets. Modern supported distributions are less likely exposed if vendor security updates have been applied. The source bundle does not identify additional products or remote exposure. Treat this as a legacy hygiene and logging-resilience issue. Prioritize systems that still run old rsyslog packages or centralize important audit logs. It is not supported by the supplied sources as actively exploited, but logging outages can materially reduce detection and investigation capability. Mitigation focus: Upgrade rsyslog to 5.7.6 or later where vendor-supported.; Apply distribution security updates for rsyslog packages.; Check Debian, Red Hat, and openSUSE guidance for package-specific status..

Prepared: Jun 6, 2026, 04:48 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Nov 14, 2019, 01:25 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

5Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://security-tracker.debian.org/tracker/CVE-2011-1489CVE reference · x_refsource_MISC
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-1489CVE reference · x_refsource_MISC
https://access.redhat.com/security/cve/cve-2011-1489CVE reference · x_refsource_MISC
https://github.com/rsyslog/rsyslog/commit/1ef709cc97d54f74d3fdeb83788cc4b01f4c6a2aCVE reference · x_refsource_MISC

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

rsyslogrsyslogbefore 5.7.6Listed

Weakness

CWE details

No CWE listed

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