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CVE-2014-1486

30
FAUCET Score

CVE-2014-1486 is a critical use-after-free vulnerability in the imgRequestProxy function affecting Mozilla Firefox, Firefox ESR, Thunderbird, and SeaMonkey. This flaw allows remote attackers to execute arbitrary code by manipulating unspecified Content-Type values for image data. With a CVSS score of 9.8, it presents a severe risk due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. Despite its high severity, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 27.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
>= 24.0, < 24.3CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
< 2.24CPE matchmatch criteria
cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:*
< 24.3CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
19CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:19:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
7.07%
Probability of exploitation in next 30 days
EPSS Percentile
93.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0707 is in the 89th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:24.3.0-2.el5_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: thunderbird-0:24.3.0-2.el5_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:24.3.0-2.el6_5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:24.3.0-2.el6_5
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2014-1486Critical

Mozilla: Use-after-free with imgRequestProxy and image proccessing (MFSA 2014-08)

Feb 4, 2014

References

download.novell.com / Download
Broken Link
download.novell.com / Download
Broken Link
lists.fedoraproject.org / pipermail/package-announce/2014-February/127966.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / pipermail/package-announce/2014-February/129218.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2014-02/msg00004.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2014-02/msg00005.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2014-02/msg00010.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2014-03/msg00017.html
Mailing ListThird Party Advisory
osvdb.org / 102872
Broken Link
rhn.redhat.com / errata/RHSA-2014-0132.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2014-0133.html
Third Party Advisory
8pecxstudios.com
Broken LinkURL Repurposed
bugzilla.mozilla.org / show_bug.cgi
Issue TrackingVendor Advisory
secunia.com / advisories/56706
Broken Link
secunia.com / advisories/56761
Broken Link
secunia.com / advisories/56763
Broken Link
secunia.com / advisories/56767
Broken Link
secunia.com / advisories/56787
Broken Link
secunia.com / advisories/56858
Broken Link
secunia.com / advisories/56888
Broken Link
secunia.com / advisories/56922
Broken Link
exchange.xforce.ibmcloud.com / vulnerabilities/90890
Third Party AdvisoryVDB Entry
security.gentoo.org / glsa/201504-01
Third Party Advisory
debian.org / security/2014/dsa-2858
Third Party Advisory
mozilla.org / security/announce/2014/mfsa2014-08.html
Vendor Advisory
oracle.com / technetwork/topics/security/bulletinapr2016-2952098.html
Third Party Advisory
securityfocus.com / bid/65334
Third Party AdvisoryVDB Entry
securitytracker.com / id/1029717
Third Party AdvisoryVDB Entry
securitytracker.com / id/1029720
Third Party AdvisoryVDB Entry
securitytracker.com / id/1029721
Third Party AdvisoryVDB Entry
ubuntu.com / usn/USN-2102-1
Third Party Advisory
ubuntu.com / usn/USN-2102-2
Third Party Advisory
ubuntu.com / usn/USN-2119-1
Third Party Advisory