Is CVE-2014-1524 being actively exploited?

CVE-2014-1524 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2014-1524?

CVE-2014-1524 has a CVSS 3.1 base score of 9.8 (CRITICAL).

CVE-2014-1524

CRITICAL · CVSS 9.8EPSS 7.7%EU EUVD

The nsXBLProtoImpl::InstallImplementation function in Mozilla Firefox before 29.0, Firefox ESR 24.x before 24.5, Thunderbird before 24.5, and SeaMonkey before 2.26 does not properly check whether objects are XBL objects, which allows remote attackers to execute arbitrary code or cause a denial of service (buffer overflow) via crafted JavaScript code that accesses a non-XBL object as if it were an XBL object.

Key facts

CVSS score: 9.8 (v3.1)
Severity: CRITICAL
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-120
EPSS score: 7.7% (95th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2014-1600)
Published: April 30, 2014
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2014-1600 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

canonical / ubuntu linux
canonical / ubuntu linux
canonical / ubuntu linux
canonical / ubuntu linux
debian / debian linux
debian / debian linux
fedoraproject / fedora
fedoraproject / fedora
mozilla / firefox
mozilla / seamonkey
mozilla / thunderbird
opensuse / opensuse
opensuse / opensuse
opensuse / opensuse
redhat / enterprise linux desktop
redhat / enterprise linux desktop
redhat / enterprise linux eus
redhat / enterprise linux server
redhat / enterprise linux server
redhat / enterprise linux server aus
redhat / enterprise linux server eus
redhat / enterprise linux server tus
redhat / enterprise linux workstation
redhat / enterprise linux workstation
suse / suse linux enterprise server
suse / suse linux enterprise server

Certified products that may be affected

1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.

Red Hat Enterprise Linux 5 OpenSSH-Server Cryptographic Module - Red Hat®, Inc. - FIPS 140 1384 - historical

References

http://lists.fedoraproject.org/pipermail/package-announce/2014-May/132332.html(Mailing List, Third Party Advisory)
http://lists.fedoraproject.org/pipermail/package-announce/2014-May/132437.html(Mailing List, Third Party Advisory)
http://lists.opensuse.org/opensuse-security-announce/2014-05/msg00006.html(Mailing List, Third Party Advisory)
http://lists.opensuse.org/opensuse-security-announce/2014-05/msg00015.html(Mailing List, Third Party Advisory)
http://lists.opensuse.org/opensuse-updates/2014-05/msg00010.html(Mailing List, Third Party Advisory)
http://lists.opensuse.org/opensuse-updates/2014-05/msg00013.html(Mailing List, Third Party Advisory)
http://lists.opensuse.org/opensuse-updates/2014-05/msg00033.html(Mailing List, Third Party Advisory)
http://lists.opensuse.org/opensuse-updates/2014-05/msg00040.html(Mailing List, Third Party Advisory)
http://rhn.redhat.com/errata/RHSA-2014-0448.html(Third Party Advisory)
http://rhn.redhat.com/errata/RHSA-2014-0449.html(Third Party Advisory)
http://secunia.com/advisories/59866(Broken Link)
http://www.debian.org/security/2014/dsa-2918(Third Party Advisory)
http://www.debian.org/security/2014/dsa-2924(Third Party Advisory)
http://www.mozilla.org/security/announce/2014/mfsa2014-38.html(Vendor Advisory)
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html(Third Party Advisory)
http://www.securityfocus.com/bid/67131(Third Party Advisory, VDB Entry)
http://www.securitytracker.com/id/1030163(Third Party Advisory, VDB Entry)
http://www.securitytracker.com/id/1030164(Third Party Advisory, VDB Entry)
http://www.securitytracker.com/id/1030165(Third Party Advisory, VDB Entry)
http://www.ubuntu.com/usn/USN-2185-1(Third Party Advisory)
http://www.ubuntu.com/usn/USN-2189-1(Third Party Advisory)
https://bugzilla.mozilla.org/show_bug.cgi?id=989183(Exploit, Issue Tracking, Vendor Advisory)
https://security.gentoo.org/glsa/201504-01(Third Party Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

Query CVEs from your AI assistant

The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.

Add the CVE brain