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CVE-2012-0449

29
FAUCET Score

CVE-2012-0449 is a critical memory corruption vulnerability affecting Mozilla Firefox, Thunderbird, and SeaMonkey versions prior to 3.6.26/4.x-9.0, 3.1.18/5.0-9.0, and 2.7 respectively. This flaw allows remote attackers to trigger a denial of service or potentially execute arbitrary code by enticing a user to open a document containing a specially crafted XSLT stylesheet. With a CVSS score of 9.3, it is a high-severity vulnerability that can be exploited over a network with medium attack complexity, leading to complete compromise of confidentiality, integrity, and availability. While the vulnerability has a high FAUCET Risk Score, there is no evidence of active exploitation, public 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
5.81%
Probability of exploitation in next 30 days
EPSS Percentile
92.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0581 is in the 64th 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 (8)

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 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 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
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: thunderbird

Vendor Advisories (1)

redhatCVE-2012-0449Critical

Mozilla: Crash when rendering SVG+XSLT (MFSA 2012-08)

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
Issue TrackingVendor Advisory
bugzilla.mozilla.org / show_bug.cgi
Issue TrackingPatchVendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/72868
Third Party AdvisoryVDB Entry
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14618
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/mfsa2012-08.html
Vendor Advisory
securityfocus.com / bid/51754
Third Party AdvisoryVDB Entry