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CVE-2013-5616

26
FAUCET Score

CVE-2013-5616 is a critical use-after-free vulnerability in the nsEventListenerManager::HandleEventSubType function affecting Mozilla Firefox, Firefox ESR, Thunderbird, and SeaMonkey. This flaw allows remote attackers to execute arbitrary code or cause a denial of service through heap memory corruption. With a CVSS score of 9.8, it presents a severe risk due to its network-based attack vector, low complexity, and high impact on confidentiality, integrity, and availability. Despite its high severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 26.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
>= 24.0, < 24.2CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
< 2.23CPE matchmatch criteria
cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:*
< 24.2CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
18CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:18:*:*:*:*:*:*:*

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
6.67%
Probability of exploitation in next 30 days
EPSS Percentile
93.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0667 is in the 88th percentile among its peer group of 36,897 CVEs.

Social Chatter

No social media mentions found for this CVE.

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-0:24.2.0-1.el5_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: thunderbird-0:24.2.0-2.el5_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:24.2.0-1.el6_5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:24.2.0-1.el6_5
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2013-5616Critical

Mozilla: Use-after-free in event listeners (MFSA 2013-108)

Dec 10, 2013

References

lists.fedoraproject.org / pipermail/package-announce/2013-December/123437.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / pipermail/package-announce/2013-December/124108.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / pipermail/package-announce/2013-December/124257.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / pipermail/package-announce/2014-January/125470.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2013-12/msg00010.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-updates/2013-12/msg00085.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-updates/2013-12/msg00086.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-updates/2013-12/msg00087.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-updates/2013-12/msg00119.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-updates/2013-12/msg00120.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-updates/2013-12/msg00121.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-updates/2014-01/msg00002.html
Mailing ListThird Party Advisory
rhn.redhat.com / errata/RHSA-2013-1812.html
Third Party Advisory
bugzilla.mozilla.org / show_bug.cgi
ExploitIssue TrackingVendor Advisory
security.gentoo.org / glsa/201504-01
Third Party Advisory
mozilla.org / security/announce/2013/mfsa2013-108.html
Vendor Advisory
oracle.com / technetwork/topics/security/bulletinapr2016-2952098.html
Third Party Advisory
securitytracker.com / id/1029470
Third Party AdvisoryVDB Entry
securitytracker.com / id/1029476
Third Party AdvisoryVDB Entry
ubuntu.com / usn/USN-2052-1
Third Party Advisory
ubuntu.com / usn/USN-2053-1
Third Party Advisory