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CVE-2014-1487

27
FAUCET Score

CVE-2014-1487 describes a Same Origin Policy bypass vulnerability in the Web workers implementation of Mozilla Firefox (before 27.0), Firefox ESR (before 24.3), Thunderbird (before 24.3), and SeaMonkey (before 2.24), as well as various Linux distributions. This high-severity vulnerability (CVSS 7.5) allows remote attackers to obtain sensitive authentication information through specially crafted error messages. While the attack complexity is low, there is no known active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 27.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
>= 24.0, < 24.3CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
< 2.24CPE matchmatch criteria
cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:*
< 24.3CPE 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

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.33%
Probability of exploitation in next 30 days
EPSS Percentile
81.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0233 is in the 67th percentile among its peer group of 51,506 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 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-0:24.3.0-2.el5_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: thunderbird-0:24.3.0-2.el5_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:24.3.0-2.el6_5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:24.3.0-2.el6_5
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2014-1487Moderate

Mozilla: Cross-origin information leak through web workers (MFSA 2014-09)

Feb 4, 2014

References

download.novell.com / Download
Broken Link
download.novell.com / Download
Broken Link
lists.fedoraproject.org / pipermail/package-announce/2014-February/127966.html
Mailing ListThird Party Advisory
lists.fedoraproject.org / pipermail/package-announce/2014-February/129218.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2014-02/msg00004.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2014-02/msg00005.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2014-02/msg00010.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2014-03/msg00017.html
Mailing ListThird Party Advisory
osvdb.org / 102873
Broken Link
rhn.redhat.com / errata/RHSA-2014-0132.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2014-0133.html
Third Party Advisory
8pecxstudios.com
Broken LinkURL Repurposed
bugzilla.mozilla.org / show_bug.cgi
ExploitIssue TrackingVendor Advisory
secunia.com / advisories/56706
Broken Link
secunia.com / advisories/56761
Broken Link
secunia.com / advisories/56763
Broken Link
secunia.com / advisories/56767
Broken Link
secunia.com / advisories/56787
Broken Link
secunia.com / advisories/56858
Broken Link
secunia.com / advisories/56888
Broken Link
secunia.com / advisories/56922
Broken Link
exchange.xforce.ibmcloud.com / vulnerabilities/90889
Third Party AdvisoryVDB Entry
security.gentoo.org / glsa/201504-01
Third Party Advisory
debian.org / security/2014/dsa-2858
Third Party Advisory
mozilla.org / security/announce/2014/mfsa2014-09.html
Vendor Advisory
oracle.com / technetwork/topics/security/bulletinapr2016-2952098.html
Third Party Advisory
securityfocus.com / bid/65330
Third Party AdvisoryVDB Entry
securitytracker.com / id/1029717
Third Party AdvisoryVDB Entry
securitytracker.com / id/1029720
Third Party AdvisoryVDB Entry
securitytracker.com / id/1029721
Third Party AdvisoryVDB Entry
ubuntu.com / usn/USN-2102-1
Third Party Advisory
ubuntu.com / usn/USN-2102-2
Third Party Advisory
ubuntu.com / usn/USN-2119-1
Third Party Advisory