CVE-2014-1486

Use-after-free vulnerability in the imgRequestProxy function in Mozilla Firefox before 27.0, Firefox ESR 24.x before 24.3, Thunderbird before 24.3, and SeaMonkey before 2.24 allows remote attackers to execute arbitrary code via vectors involving unspecified Content-Type values for image data.

Published: 2014-02-06 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2014-1486 is rated High Risk (73.7/100): CVSS Critical severity, with high exploitation likelihood (EPSS 10.82%, 93th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +1.93% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2014-1486

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-07-17 8.89% 10.82% +1.93%
2 2025-03-30 19.77% 8.89% -10.88%
3 2025-03-29 — 19.77% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2014-1486

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-2014-1486

OS Trackers for CVE-2014-1486

vendor priority summary link
gentoo normal CVE-2014-1486: 1 GLSA(s) (201504-01), 7 atom(s) (dev-libs/nspr, mail-client/thunderbird, …); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2014-1486
redhat critical — https://access.redhat.com/security/cve/CVE-2014-1486
suse critical CVE-2014-1486 severity critical: SUSE including 92 source package names (MozillaFirefox-140.2.0-160000.1.2, MozillaFirefox-24.3.0esr-0.4.2.1, …), 162 product×package rows across 36 product lines (SUSE Linux Enterprise Desktop 11 SP3, SUSE Linux Enterprise Desktop 12, … (36 product lines)): Fixed 162. https://www.suse.com/security/cve/CVE-2014-1486/
ubuntu medium CVE-2014-1486 medium priority: Ubuntu including 2 source packages (firefox, thunderbird), 10 status rows across 5 suites (lucid, precise, quantal, saucy, upstream): released 8, ignored 2. https://ubuntu.com/security/CVE-2014-1486

Affected software / configurations for CVE-2014-1486

Vendor Product Version Raw CPE
mozilla firefox < 27.0 cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
mozilla firefox >= 24.0, < 24.3 cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
mozilla seamonkey < 2.24 cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:*
mozilla thunderbird < 24.3 cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
fedoraproject fedora 19 cpe:2.3:o:fedoraproject:fedora:19:*:*:*:*:*:*:*
fedoraproject fedora 20 cpe:2.3:o:fedoraproject:fedora:20:*:*:*:*:*:*:*
suse suse_linux_enterprise_software_development_kit 11.0 cpe:2.3:a:suse:suse_linux_enterprise_software_development_kit:11.0:sp3:*:*:*:*:*:*
opensuse opensuse 11.4 cpe:2.3:o:opensuse:opensuse:11.4:*:*:*:*:*:*:*
opensuse opensuse 12.3 cpe:2.3:o:opensuse:opensuse:12.3:*:*:*:*:*:*:*
opensuse opensuse 13.1 cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*
suse suse_linux_enterprise_desktop 11 cpe:2.3:o:suse:suse_linux_enterprise_desktop:11:sp3:*:*:*:*:*:*
suse suse_linux_enterprise_server 11 cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp3:*:*:*:-:*:*
suse suse_linux_enterprise_server 11 cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp3:*:*:*:vmware:*:*
debian debian_linux 7.0 cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
canonical ubuntu_linux 12.04 cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
canonical ubuntu_linux 12.10 cpe:2.3:o:canonical:ubuntu_linux:12.10:*:*:*:*:*:*:*
canonical ubuntu_linux 13.10 cpe:2.3:o:canonical:ubuntu_linux:13.10:*:*:*:*:*:*:*
redhat enterprise_linux_desktop 6.0 cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
redhat enterprise_linux_eus 6.5 cpe:2.3:o:redhat:enterprise_linux_eus:6.5:*:*:*:*:*:*:*
redhat enterprise_linux_server 6.0 cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
redhat enterprise_linux_server_aus 6.5 cpe:2.3:o:redhat:enterprise_linux_server_aus:6.5:*:*:*:*:*:*:*
redhat enterprise_linux_server_tus 6.5 cpe:2.3:o:redhat:enterprise_linux_server_tus:6.5:*:*:*:*:*:*:*
redhat enterprise_linux_workstation 6.0 cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*

References for CVE-2014-1486

URL Tags
http://download.novell.com/Download?buildid=VYQsgaFpQ2k Broken Link
http://download.novell.com/Download?buildid=Y2fux-JW1Qc Broken Link
http://lists.fedoraproject.org/pipermail/package-announce/2014-February/127966.html Mailing List Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2014-February/129218.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00004.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00005.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00010.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00017.html Mailing List Third Party Advisory
http://osvdb.org/102872 Broken Link
http://rhn.redhat.com/errata/RHSA-2014-0132.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2014-0133.html Third Party Advisory
http://secunia.com/advisories/56706 Broken Link
http://secunia.com/advisories/56761 Broken Link
http://secunia.com/advisories/56763 Broken Link
http://secunia.com/advisories/56767 Broken Link
http://secunia.com/advisories/56787 Broken Link
http://secunia.com/advisories/56858 Broken Link
http://secunia.com/advisories/56888 Broken Link
http://secunia.com/advisories/56922 Broken Link
http://www.debian.org/security/2014/dsa-2858 Third Party Advisory
http://www.mozilla.org/security/announce/2014/mfsa2014-08.html Vendor Advisory
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html Third Party Advisory
http://www.securityfocus.com/bid/65334 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1029717 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1029720 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1029721 Third Party Advisory VDB Entry
http://www.ubuntu.com/usn/USN-2102-1 Third Party Advisory
http://www.ubuntu.com/usn/USN-2102-2 Third Party Advisory
http://www.ubuntu.com/usn/USN-2119-1 Third Party Advisory
https://8pecxstudios.com/?page_id=44080 Broken Link URL Repurposed
https://bugzilla.mozilla.org/show_bug.cgi?id=942164 Issue Tracking Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/90890 Third Party Advisory VDB Entry
https://security.gentoo.org/glsa/201504-01 Third Party Advisory
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