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CVE-2014-1500

16
FAUCET Score

CVE-2014-1500 describes a denial-of-service vulnerability affecting Mozilla Firefox before version 28.0 and SeaMonkey before 2.25, as well as products from OpenSUSE, Oracle, and SUSE. Remote attackers can exploit this flaw by using onbeforeunload events to trigger background JavaScript execution, leading to resource consumption and application hangs. With a CVSS score of 5.0, this vulnerability is of medium severity, requiring no authentication and having a low attack complexity, but only resulting in partial availability impact. There is no evidence of active exploitation, no known public exploit code (Metasploit, Nuclei, ExploitDB), and it has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
13.1CPE matchmatch criteria
cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*
11.4CPE matchmatch criteria
cpe:2.3:o:opensuse_project:opensuse:11.4:*:*:*:*:*:*:*
12.3CPE matchmatch criteria
cpe:2.3:o:opensuse_project:opensuse:12.3:*:*:*:*:*:*:*
11.3CPE matchmatch criteria
cpe:2.3:o:oracle:solaris:11.3:*:*:*:*:*:*:*
< 28.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.54%
Probability of exploitation in next 30 days
EPSS Percentile
88.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0354 is in the 84th percentile among its peer group of 23,725 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Vendor Patches (1)

mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2014-1500Moderate

Mozilla: onbeforeunload and Javascript navigation DOS (MFSA 2014-20)

Mar 18, 2014

References

lists.opensuse.org / opensuse-security-announce/2014-03/msg00016.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2014-03/msg00017.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2014-03/msg00022.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2014-04/msg00016.html
Mailing ListThird Party Advisory
bugzilla.mozilla.org / show_bug.cgi
Issue TrackingVendor Advisory
security.gentoo.org / glsa/201504-01
Third Party Advisory
mozilla.org / security/announce/2014/mfsa2014-20.html
Vendor Advisory
oracle.com / technetwork/topics/security/bulletinapr2016-2952098.html
Third Party Advisory