Is CVE-2011-0343 in the CISA KEV catalog?

No. CVE-2011-0343 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2011-0343?

CVE-2011-0343 has a CVSS v2 base score of 6.9 (MEDIUM).

What is the EPSS score for CVE-2011-0343?

CVE-2011-0343 has an EPSS score of 0.38% (30th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2011-0343?

Upgrade syslog-ng on debian 11 to 3.1.3-2 or later.

CVE & CISA-KEV Catalog

CVE-2011-0343

MEDIUM

6.9

CVSS v2

NVD

Description

Balabit syslog-ng 2.0, 3.0, 3.1, 3.2 OSE and PE, when running on FreeBSD or HP-UX, does not properly perform cast operations, which causes syslog-ng to use a default value of -1 to create log files with insecure permissions (07777), which allows local users to read and write to these log files.

CWE-264Permissions, Privileges, and Access Controls

How to fix

Remediation Available

syslog-ngDebian

Fixed in:3.1.3-2CVE-2011-0343

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

0.38%probability of exploitation in 30 days

30thpercentile

Low risk: more likely to be exploited than 30% of all known CVEs.

References

Patch1

bugs.debian.org

Vendor Advisory2

Third-Party Advisory2

Related Vulnerabilities

Other CWE-264 (Permissions, Privileges, and Access Controls) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2012-1456	Medium	4.3	100%	-	-
CVE-2012-1459	Medium	4.3	100%	-	Fix
CVE-2012-1446	Medium	4.3	100%	-	-
CVE-2012-1443	Medium	4.3	100%	-	-
CVE-2012-1442	Medium	4.3	99%	-	-
CVE-2012-1457	Medium	4.3	98%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.