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CVE-2014-3634

22
FAUCET Score

CVE-2014-3634 is a denial-of-service vulnerability affecting rsyslog versions before 7.6.6 and 8.x before 8.4.1, as well as sysklogd 1.5 and earlier. Remote attackers can trigger an out-of-bounds array access by sending a crafted priority (PRI) value, leading to a crash, potential arbitrary code execution, or other unspecified impacts. With a CVSS score of 7.5, this vulnerability is considered highly severe due to its network attack vector and low attack complexity, allowing for partial confidentiality, integrity, and availability impacts. Despite its severity, there is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.5CPE matchmatch criteria
cpe:2.3:a:sysklogd_project:sysklogd:*:*:*:*:*:*:*:*
1.1CPE matchmatch criteria
cpe:2.3:a:sysklogd_project:sysklogd:1.1:*:*:*:*:*:*:*
1.2CPE matchmatch criteria
cpe:2.3:a:sysklogd_project:sysklogd:1.2:*:*:*:*:*:*:*
1.3CPE matchmatch criteria
cpe:2.3:a:sysklogd_project:sysklogd:1.3:*:*:*:*:*:*:*
1.4CPE matchmatch criteria
cpe:2.3:a:sysklogd_project:sysklogd:1.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
7.55%
Probability of exploitation in next 30 days
EPSS Percentile
93.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0755 is in the 90th percentile among its peer group of 51,485 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (8)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: rsyslog-0:5.8.10-9.el6_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: rsyslog5-0:5.8.12-5.el5_11
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: rsyslog-0:7.4.7-7.el7_0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: rsyslog7-0:7.4.10-3.el6_6
View patch
redhatno patchvia redhat_api
Product: Red Hat OpenShift Enterprise 2Fixed in: rsyslog7
redhatend of lifevia redhat_api
Product: Red Hat Storage 2.1Fixed in: rsyslog
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: rsyslog
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: sysklogd

Vendor Advisories (1)

redhatCVE-2014-3634Important

rsyslog: remote syslog PRI vulnerability

Sep 30, 2014

References

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