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CVE-2014-1532

33
FAUCET Score

CVE-2014-1532 is a critical use-after-free vulnerability in the nsHostResolver::ConditionallyRefreshRecord function within libxul.so, 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 related to host resolution. With a CVSS score of 9.8 (CRITICAL), it presents a high risk due to its network-based attack vector, low attack complexity, and potential for complete compromise of confidentiality, integrity, and availability. Despite its severity, there is no known active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 29.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
>= 24.0, < 24.5CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
< 2.26CPE matchmatch criteria
cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:*
< 24.5CPE 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
4.65%
Probability of exploitation in next 30 days
EPSS Percentile
90.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0465 is in the 84th 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-0:24.5.0-1.el5_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: thunderbird-0:24.5.0-1.el5_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:24.5.0-1.el6_5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:24.5.0-1.el6_5
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2014-1532Critical

Mozilla: Use-after-free in nsHostResolver (MFSA 2014-46)

Apr 29, 2014

References

lists.fedoraproject.org / pipermail/package-announce/2014-May/132332.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / pipermail/package-announce/2014-May/132437.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2014-05/msg00006.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2014-05/msg00015.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-updates/2014-05/msg00010.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-updates/2014-05/msg00013.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-updates/2014-05/msg00033.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-updates/2014-05/msg00040.html
Mailing ListThird Party Advisory
rhn.redhat.com / errata/RHSA-2014-0448.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2014-0449.html
Third Party Advisory
bugzilla.mozilla.org / show_bug.cgi
ExploitIssue TrackingThird Party Advisory
secunia.com / advisories/59866
Broken Link
security.gentoo.org / glsa/201504-01
Third Party Advisory
debian.org / security/2014/dsa-2918
Third Party Advisory
debian.org / security/2014/dsa-2924
Third Party Advisory
mozilla.org / security/announce/2014/mfsa2014-46.html
Vendor Advisory
oracle.com / technetwork/topics/security/bulletinapr2016-2952098.html
Third Party Advisory
securityfocus.com / bid/67130
Third Party AdvisoryVDB Entry
securitytracker.com / id/1030163
Third Party AdvisoryVDB Entry
securitytracker.com / id/1030164
Third Party AdvisoryVDB Entry
securitytracker.com / id/1030165
Third Party AdvisoryVDB Entry
ubuntu.com / usn/USN-2185-1
Third Party Advisory
ubuntu.com / usn/USN-2189-1
Third Party Advisory