How severe is CVE-2014-4975?

CVE-2014-4975 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2014-4975 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-4975?

CVE-2014-4975 primarily affects Ruby-lang Ruby. In total, 23 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-4975?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2014-4975 published?

CVE-2014-4975 was published on 2014-11-15 and last updated on 2026-06-17.

CVE-2014-4975

CVE-2014-4975 is a medium-severity vulnerability in Ruby-lang Ruby with a CVSS 2.0 base score of 5.0. 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: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 3% (89th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Ruby-lang Ruby
Published: 2014-11-15
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2014-4975?: 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.
How severe is CVE-2014-4975?: CVE-2014-4975 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2014-4975 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-4975?: CVE-2014-4975 primarily affects Ruby-lang Ruby. In total, 23 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-4975?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2014-4975 published?: CVE-2014-4975 was published on 2014-11-15 and last updated on 2026-06-17.

References

Affected products (23)

cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:2.0:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:2.0.0:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:2.0.0:p0:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:2.0.0:p195:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:2.0.0:p247:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:2.0.0:preview1:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:2.0.0:preview2:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:2.0.0:rc1:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:2.0.0:rc2:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:2.1:-:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:2.1:preview1:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:2.1.1:*:*:*:*:*:*:*
cpe:2.3:a:ruby-lang:ruby:2.1.2:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_hpc_node:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.10:*:*:*:*:*:*:*

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Threat intelligence

Threat-intel indicators referencing this CVE:

18.228.228.159 (ipv4-addr)
51.17.154.141 (ipv4-addr)
13.206.73.237 (ipv4-addr)