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CVE-2014-1236

27
FAUCET Score

CVE-2014-1236 describes a critical stack-based buffer overflow vulnerability in the chkNum function of Graphviz 2.34.0, specifically within its lib/cgraph/scan.l component. This flaw allows remote attackers to achieve complete compromise of confidentiality, integrity, and availability through specially crafted "badly formed numbers" or "long digit lists." With a CVSS score of 10.0, indicating a network-based attack with low complexity and no authentication required, this vulnerability poses a severe risk. Despite its critical severity, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2.34.0CPE matchmatch criteria
cpe:2.3:a:graphviz:graphviz:2.34.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

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

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

Exploit Intelligence

EPSS Score
6.08%
Probability of exploitation in next 30 days
EPSS Percentile
92.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0608 is in the 87th percentile among its peer group of 51,553 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 (2)

github_advisorypatch availablevia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: graphviz

Vendor Advisories (1)

redhatCVE-2014-1236Low

graphviz: stack-based buffer overflow in chkNum()

Jan 8, 2014

References

osvdb.org / 101851
bugzilla.redhat.com / show_bug.cgi
seclists.org / oss-sec/2014/q1/46
seclists.org / oss-sec/2014/q1/51
seclists.org / oss-sec/2014/q1/54
secunia.com / advisories/55666
Vendor Advisory
secunia.com / advisories/56244
github.com / ellson/graphviz/commit/1d1bdec6318746f6f19f245db589eddc887ae8ff
ExploitPatch
security.gentoo.org / glsa/201702-06
debian.org / security/2014/dsa-2843
mandriva.com / security/advisories
securityfocus.com / bid/64737