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CVE-2014-3916

15
FAUCET Score

CVE-2014-3916 describes a denial-of-service vulnerability in Ruby versions 1.9.3, 2.0.0, and 2.1, specifically within the str_buf_cat function in string.c. An unauthenticated attacker can exploit this by providing a long string, leading to a segmentation fault and application crash. This vulnerability has a CVSS score of 5.0, indicating a medium severity, with low attack complexity and only impacting availability. There is no evidence of active exploitation, no public exploit code available (Metasploit, Nuclei, ExploitDB), and it has received negligible community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.9.3CPE matchmatch criteria
cpe:2.3:a:rubyonrails:rails:1.9.3:*:*:*:*:*:*:*
2.0.0CPE matchmatch criteria
cpe:2.3:a:rubyonrails:rails:2.0.0:*:*:*:*:*:*:*
2.1.0CPE matchmatch criteria
cpe:2.3:a:rubyonrails:rails:2.1.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.37%
Probability of exploitation in next 30 days
EPSS Percentile
69.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0137 is in the 50th percentile among its peer group of 23,725 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, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Vendor Patches (1)

redhatend of lifevia redhat_api
Product: CloudForms Management Engine 5.2Fixed in: ruby

Vendor Advisories (1)

redhatCVE-2014-3916Low

ruby: DoS via long string in str_buf_cat()

Apr 7, 2014

References

bugs.ruby-lang.org / issues/9709
Vendor Advisory
seclists.org / oss-sec/2014/q2/362
seclists.org / oss-sec/2014/q2/375
exchange.xforce.ibmcloud.com / vulnerabilities/93505
securityfocus.com / bid/67705