CVE-2014-3634

CVE-2014-3634 is a high-severity vulnerability in Sysklogd Project Sysklogd with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

• Severity: High (CVSS 2.0 base score 7.5)
• EPSS exploit prediction: 8% (94th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-119
• Affected product: Sysklogd Project Sysklogd
• Published: 2014-11-02
• Last modified: 2026-06-17

Description

rsyslog before 7.6.6 and 8.x before 8.4.1 and sysklogd 1.5 and earlier allows remote attackers to cause a denial of service (crash), possibly execute arbitrary code, or have other unspecified impact via a crafted priority (PRI) value that triggers an out-of-bounds array access.

Frequently asked questions

What is CVE-2014-3634?

rsyslog before 7.6.6 and 8.x before 8.4.1 and sysklogd 1.5 and earlier allows remote attackers to cause a denial of service (crash), possibly execute arbitrary code, or have other unspecified impact via a crafted priority (PRI) value that triggers an out-of-bounds array access.

How severe is CVE-2014-3634?

CVE-2014-3634 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2014-3634 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-3634?

CVE-2014-3634 primarily affects Sysklogd Project Sysklogd. In total, 25 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-3634?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2014-3634 published?

CVE-2014-3634 was published on 2014-11-02 and last updated on 2026-06-17.

References

• http://advisories.mageia.org/MGASA-2014-0411.html
• http://linux.oracle.com/errata/ELSA-2014-1654
• http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00005.html
• http://lists.opensuse.org/opensuse-updates/2014-10/msg00020.html
• http://lists.opensuse.org/opensuse-updates/2014-10/msg00021.html
• http://rhn.redhat.com/errata/RHSA-2014-1397.html
• http://rhn.redhat.com/errata/RHSA-2014-1654.html
• http://rhn.redhat.com/errata/RHSA-2014-1671.html
• http://secunia.com/advisories/61494
• http://secunia.com/advisories/61720
• http://secunia.com/advisories/61930
• http://www.debian.org/security/2014/dsa-3040
• http://www.mandriva.com/security/advisories?name=MDVSA-2015:130
• http://www.openwall.com/lists/oss-security/2014/09/30/15
• http://www.openwall.com/lists/oss-security/2014/10/03/1
• http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html
• http://www.rsyslog.com/remote-syslog-pri-vulnerability/
• http://www.ubuntu.com/usn/USN-2381-1

Affected products (25)

• cpe:2.3:a:sysklogd_project:sysklogd:*:*:*:*:*:*:*:*
• cpe:2.3:a:sysklogd_project:sysklogd:1.1:*:*:*:*:*:*:*
• cpe:2.3:a:sysklogd_project:sysklogd:1.2:*:*:*:*:*:*:*
• cpe:2.3:a:sysklogd_project:sysklogd:1.3:*:*:*:*:*:*:*
• cpe:2.3:a:sysklogd_project:sysklogd:1.4:*:*:*:*:*:*:*
• cpe:2.3:a:sysklogd_project:sysklogd:1.4.1:*:*:*:*:*:*:*
• cpe:2.3:a:rsyslog:rsyslog:*:*:*:*:*:*:*:*
• cpe:2.3:a:rsyslog:rsyslog:8.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:rsyslog:rsyslog:8.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:rsyslog:rsyslog:8.1.2:*:*:*:*:*:*:*
• cpe:2.3:a:rsyslog:rsyslog:8.1.3:*:*:*:*:*:*:*
• cpe:2.3:a:rsyslog:rsyslog:8.1.4:*:*:*:*:*:*:*
• cpe:2.3:a:rsyslog:rsyslog:8.1.5:*:*:*:*:*:*:*
• cpe:2.3:a:rsyslog:rsyslog:8.1.6:*:*:*:*:*:*:*
• cpe:2.3:a:rsyslog:rsyslog:8.2.0:*:*:*:*:*:*:*
• cpe:2.3:a:rsyslog:rsyslog:8.2.1:*:*:*:*:*:*:*
• cpe:2.3:a:rsyslog:rsyslog:8.2.2:*:*:*:*:*:*:*
• cpe:2.3:a:rsyslog:rsyslog:8.2.3:*:*:*:*:*:*:*
• cpe:2.3:a:rsyslog:rsyslog:8.3.0:*:*:*:*:*:*:*
• cpe:2.3:a:rsyslog:rsyslog:8.3.1:*:*:*:*:*:*:*
• cpe:2.3:a:rsyslog:rsyslog:8.3.2:*:*:*:*:*:*:*
• cpe:2.3:a:rsyslog:rsyslog:8.3.3:*:*:*:*:*:*:*
• cpe:2.3:a:rsyslog:rsyslog:8.3.4:*:*:*:*:*:*:*
• cpe:2.3:a:rsyslog:rsyslog:8.3.5:*:*:*:*:*:*:*
• cpe:2.3:a:rsyslog:rsyslog:8.4.0:*:*:*:*:*:*:*

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