Is CVE-2014-4975 being actively exploited?

CVE-2014-4975 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2014-4975?

CVE-2014-4975 has a CVSS 2.0 base score of 5.0 (MEDIUM).

CVE-2014-4975

MEDIUM · CVSS 5.0EPSS 3.5%EU EUVD

Off-by-one error in the encodes function in pack.c in Ruby 1.9.3 and earlier, and 2.x through 2.1.2, when using certain format string specifiers, allows context-dependent attackers to cause a denial of service (segmentation fault) via vectors that trigger a stack-based buffer overflow.

Key facts

CVSS score: 5.0 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:L/Au:N/C:P/I:N/A:N
Weakness (CWE): CWE-119
EPSS score: 3.5% (89th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2014-4890)
Published: November 15, 2014
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2014-4890 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

canonical / ubuntu linux
canonical / ubuntu linux
canonical / ubuntu linux
debian / debian linux
debian / debian linux
redhat / enterprise linux desktop
redhat / enterprise linux hpc node
redhat / enterprise linux server
redhat / enterprise linux workstation
ruby-lang / ruby
ruby-lang / ruby
ruby-lang / ruby
ruby-lang / ruby
ruby-lang / ruby
ruby-lang / ruby
ruby-lang / ruby
ruby-lang / ruby
ruby-lang / ruby
ruby-lang / ruby
ruby-lang / ruby
ruby-lang / ruby
ruby-lang / ruby
ruby-lang / ruby

References

http://advisories.mageia.org/MGASA-2014-0472.html(Third Party Advisory)
http://rhn.redhat.com/errata/RHSA-2014-1912.html(Third Party Advisory)
http://rhn.redhat.com/errata/RHSA-2014-1913.html(Third Party Advisory)
http://rhn.redhat.com/errata/RHSA-2014-1914.html(Third Party Advisory)
http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=46778(Vendor Advisory)
http://www.debian.org/security/2015/dsa-3157(Third Party Advisory)
http://www.mandriva.com/security/advisories?name=MDVSA-2015:129(Broken Link)
http://www.openwall.com/lists/oss-security/2014/07/09/13(Mailing List)
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html(Third Party Advisory)
http://www.securityfocus.com/bid/68474(Third Party Advisory, VDB Entry)
http://www.ubuntu.com/usn/USN-2397-1(Third Party Advisory)
https://bugs.ruby-lang.org/issues/10019(Vendor Advisory)
https://bugzilla.redhat.com/show_bug.cgi?id=1118158(Issue Tracking)
https://exchange.xforce.ibmcloud.com/vulnerabilities/94706

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

Query CVEs from your AI assistant

The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.

Add the CVE brain