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CVE-2014-1551

33
FAUCET Score

CVE-2014-1551 is a critical use-after-free vulnerability in the FontTableRec destructor affecting Mozilla Firefox, Firefox ESR, and Thunderbird on Windows. This flaw allows remote attackers to execute arbitrary code by exploiting crafted MathML content that improperly handles DirectWrite font-face objects. With a CVSS score of 10.0, it presents a severe risk due to its network-based attack vector, low complexity, and complete compromise of confidentiality, integrity, and availability. While no active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion has been identified, its high FAUCET Risk Score of 86/100 indicates a substantial potential threat.

Impacted Technologies

VendorProductVersion(s)CPE
<= 30.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
24.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:24.0:*:*:*:*:*:*:*
24.0.1CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:24.0.1:*:*:*:*:*:*:*
24.0.2CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:24.0.2:*:*:*:*:*:*:*
24.1.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:24.1.0:*:*:*:*:*:*:*

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
4.68%
Probability of exploitation in next 30 days
EPSS Percentile
90.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0468 is in the 84th percentile among its peer group of 51,553 CVEs.

Social Chatter

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

Vendor Patches (1)

mozillavendor investigatingvia nvd_reference
View patch

References

bugzilla.mozilla.org / show_bug.cgi
secunia.com / advisories/59760
security.gentoo.org / glsa/201504-01
mozilla.org / security/announce/2014/mfsa2014-59.html
Vendor Advisory
oracle.com / technetwork/topics/security/bulletinapr2016-2952098.html
securitytracker.com / id/1030619
securitytracker.com / id/1030620