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CVE-2010-3768

28
FAUCET Score

CVE-2010-3768 describes a critical vulnerability in older versions of Mozilla Firefox, Thunderbird, and SeaMonkey. The flaw allows remote attackers to execute arbitrary code by exploiting improper validation of downloadable fonts, specifically through @font-face CSS rules. With a CVSS score of 9.3 (Critical), this vulnerability has a high attack complexity but can lead to complete compromise of confidentiality, integrity, and availability if successfully exploited. Despite its severity, 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
3.6CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:3.6:*:*:*:*:*:*:*
3.6.2CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:3.6.2:*:*:*:*:*:*:*
3.6.3CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:3.6.3:*:*:*:*:*:*:*
3.6.4CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:3.6.4:*:*:*:*:*:*:*
3.6.6CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:3.6.6:*:*:*:*:*:*:*

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
4.81%
Probability of exploitation in next 30 days
EPSS Percentile
91.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0481 is in the 58th percentile among its peer group of 8,920 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 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 (11)

mozillapatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: firefox-0:3.6.13-3.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:3.6.13-2.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: xulrunner-0:1.9.2.13-3.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:3.6.13-2.el6_0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: xulrunner-0:1.9.2.13-3.el6_0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:3.1.7-3.el6_0
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux Extended Update Support 4.8Fixed in: firefox
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux Extended Update Support 5.5Fixed in: firefox
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux Extended Update Support 6.0Fixed in: firefox
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux Extended Update Support 6.0Fixed in: thunderbird

Vendor Advisories (1)

redhatCVE-2010-3768Critical

Mozilla add support for OTS font sanitizer (MFSA 2010-78)

Dec 9, 2010

References

lists.fedoraproject.org / pipermail/package-announce/2010-December/052022.html
lists.fedoraproject.org / pipermail/package-announce/2010-December/052032.html
lists.fedoraproject.org / pipermail/package-announce/2010-December/052110.html
lists.fedoraproject.org / pipermail/package-announce/2010-December/052220.html
lists.fedoraproject.org / pipermail/package-announce/2010-December/052502.html
lists.fedoraproject.org / pipermail/package-announce/2010-December/052504.html
lists.opensuse.org / opensuse-security-announce/2011-01/msg00002.html
bugzilla.mozilla.org / show_bug.cgi
Patch
bugzilla.redhat.com / show_bug.cgi
secunia.com / advisories/42716
secunia.com / advisories/42818
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12533
support.avaya.com / css/P8/documents/100124650
mandriva.com / security/advisories
mandriva.com / security/advisories
mozilla.org / security/announce/2010/mfsa2010-78.html
Vendor Advisory
redhat.com / support/errata/RHSA-2010-0966.html
redhat.com / support/errata/RHSA-2010-0969.html
securityfocus.com / bid/45352
securitytracker.com / id
securitytracker.com / id
ubuntu.com / usn/USN-1019-1
ubuntu.com / usn/USN-1020-1
vupen.com / english/advisories/2011/0030