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CVE-2012-0458

24
FAUCET Score

CVE-2012-0458 describes a vulnerability in Mozilla Firefox, Thunderbird, and SeaMonkey browsers. It allows a user-assisted remote attacker to execute arbitrary JavaScript code with chrome privileges. This occurs when a user drags a specially crafted javascript: URL to the home button, which is later interpreted in the about:sessionrestore context. The vulnerability has a CVSS score of 6.8, indicating a medium severity with potential for partial confidentiality, integrity, and availability impact. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.6.27CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
> 4.0, <= 10.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:10.0:*:*:*:*:*:*:*
10.0.1CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:10.0.1:*:*:*:*:*:*:*
10.0.2CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:10.0.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.76%
Probability of exploitation in next 30 days
EPSS Percentile
84.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0276 is in the 77th percentile among its peer group of 19,954 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 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

Patch Available

Vendor Patches (8)

mozillapatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:10.0.3-1.el5_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: xulrunner-0:10.0.3-1.el5_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: thunderbird-0:10.0.3-1.el5_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:10.0.3-1.el6_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: xulrunner-0:10.0.3-1.el6_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:10.0.3-1.el6_2
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: firefox

Vendor Advisories (1)

redhatCVE-2012-0458Critical

Mozilla: Escalation of privilege with Javascript: URL as home page (MFSA 2012-16)

Mar 13, 2012

References

lists.opensuse.org / opensuse-security-announce/2012-03/msg00014.html
lists.opensuse.org / opensuse-security-announce/2012-03/msg00015.html
lists.opensuse.org / opensuse-updates/2012-03/msg00042.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2012-0387.html
rhn.redhat.com / errata/RHSA-2012-0388.html
bugzilla.mozilla.org / show_bug.cgi
ExploitIssue TrackingVendor Advisory
bugzilla.mozilla.org / show_bug.cgi
Issue TrackingVendor Advisory
bugzilla.mozilla.org / show_bug.cgi
Issue TrackingPatchVendor Advisory
secunia.com / advisories/48359
secunia.com / advisories/48402
secunia.com / advisories/48414
secunia.com / advisories/48495
Third Party Advisory
secunia.com / advisories/48496
Third Party Advisory
secunia.com / advisories/48513
Third Party Advisory
secunia.com / advisories/48553
Third Party Advisory
secunia.com / advisories/48561
Third Party Advisory
secunia.com / advisories/48624
Third Party Advisory
secunia.com / advisories/48629
Third Party Advisory
secunia.com / advisories/48823
Third Party Advisory
secunia.com / advisories/48920
Third Party Advisory
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15122
Third Party Advisory
debian.org / security/2012/dsa-2433
Third Party Advisory
debian.org / security/2012/dsa-2458
mandriva.com / security/advisories
mandriva.com / security/advisories
mozilla.org / security/announce/2012/mfsa2012-16.html
Vendor Advisory
securityfocus.com / bid/52460
securitytracker.com / id
securitytracker.com / id
securitytracker.com / id
ubuntu.com / usn/USN-1400-1
ubuntu.com / usn/USN-1400-2
Third Party Advisory
ubuntu.com / usn/USN-1400-3
Third Party Advisory
ubuntu.com / usn/USN-1400-4
Third Party Advisory
ubuntu.com / usn/USN-1400-5
Third Party Advisory
ubuntu.com / usn/USN-1401-1
Third Party Advisory