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CVE-2012-0442

28
FAUCET Score

CVE-2012-0442 describes multiple unspecified vulnerabilities within the browser engine of Mozilla Firefox, Thunderbird, and SeaMonkey. These flaws allow remote attackers to trigger a denial of service through memory corruption and application crashes, and potentially execute arbitrary code. With a CVSS score of 9.3, this vulnerability is considered critical due to its network-based attack vector, medium attack complexity, and high impact on confidentiality, integrity, and availability. Despite its severity, there is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.6.26CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
>= 4.0, < 10.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
< 2.7CPE matchmatch criteria
cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:*
< 3.1.18CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
>= 5.0, < 10.0CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
4.60%
Probability of exploitation in next 30 days
EPSS Percentile
90.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0460 is in the 56th percentile among its peer group of 8,915 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 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 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (10)

mozillapatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: firefox-0:3.6.26-2.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: seamonkey-0:1.0.9-78.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: thunderbird-0:1.5.0.12-46.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:3.6.26-1.el5_7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: xulrunner-0:1.9.2.26-1.el5_7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: thunderbird-0:2.0.0.24-28.el5_7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:3.6.26-1.el6_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: xulrunner-0:1.9.2.26-1.el6_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:3.1.18-1.el6_2
View patch

Vendor Advisories (1)

redhatCVE-2012-0442Critical

Mozilla: memory safety hazards in 10.0/1.9.2.26 (MFSA 2012-01)

Jan 31, 2012

References

lists.opensuse.org / opensuse-security-announce/2012-02/msg00003.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2012-02/msg00007.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2012-02/msg00011.html
Mailing ListThird Party Advisory
bugzilla.mozilla.org / show_bug.cgi
ExploitIssue TrackingPatchVendor Advisory
bugzilla.mozilla.org / show_bug.cgi
Issue TrackingPatchVendor Advisory
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14678
Third Party Advisory
debian.org / security/2012/dsa-2400
Third Party Advisory
debian.org / security/2012/dsa-2402
Third Party Advisory
debian.org / security/2012/dsa-2406
Third Party Advisory
mandriva.com / security/advisories
Third Party Advisory
mozilla.org / security/announce/2012/mfsa2012-01.html
Vendor Advisory