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CVE-2014-1567

32
FAUCET Score

CVE-2014-1567 is a use-after-free vulnerability in Mozilla Firefox, Firefox ESR, and Thunderbird, allowing remote attackers to execute arbitrary code through specially crafted text during directionality resolution and layout. With a CVSS score of 9.3, it is considered critical, indicating a network-based attack with medium complexity that can lead to complete compromise of confidentiality, integrity, and availability. Despite its high severity, there is no known active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 31.1.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
30.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:30.0:*:*:*:*:*:*:*
31.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:31.0:*:*:*:*:*:*:*
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:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
4.94%
Probability of exploitation in next 30 days
EPSS Percentile
91.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0494 is in the 59th percentile among its peer group of 8,920 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 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 (7)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:24.8.0-2.el5_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: thunderbird-0:24.8.0-1.el5_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:24.8.0-1.el6_5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:24.8.0-1.el6_5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: firefox-0:24.8.0-1.el7_0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: xulrunner-0:24.8.0-1.el7_0
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2014-1567Critical

Mozilla: Use-after-free setting text directionality (MFSA 2014-72)

Sep 3, 2014

References

lists.opensuse.org / opensuse-security-announce/2014-09/msg00003.html
lists.opensuse.org / opensuse-security-announce/2014-09/msg00005.html
lists.opensuse.org / opensuse-security-announce/2014-09/msg00007.html
lists.opensuse.org / opensuse-security-announce/2014-09/msg00012.html
lists.opensuse.org / opensuse-security-announce/2015-01/msg00024.html
lists.opensuse.org / opensuse-security-announce/2015-07/msg00031.html
lists.opensuse.org / opensuse-updates/2014-09/msg00011.html
bugzilla.mozilla.org / show_bug.cgi
secunia.com / advisories/60148
secunia.com / advisories/60186
secunia.com / advisories/61114
secunia.com / advisories/61390
security.gentoo.org / glsa/201504-01
debian.org / security/2014/dsa-3018
debian.org / security/2014/dsa-3028
mozilla.org / security/announce/2014/mfsa2014-72.html
Vendor Advisory
oracle.com / technetwork/topics/security/bulletinapr2016-2952098.html
securityfocus.com / bid/69520
securitytracker.com / id/1030793
securitytracker.com / id/1030794