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CVE-2011-2374

34
FAUCET Score

CVE-2011-2374 describes multiple unspecified vulnerabilities within the browser engine of Mozilla Firefox (versions before 3.6.18 and 4.x through 4.0.1) and Mozilla Thunderbird (versions before 3.1.11). These flaws could allow a remote attacker to trigger a denial of service through memory corruption and application crashes, or potentially execute arbitrary code. With a CVSS score of 10.0, this vulnerability is considered critical due to its network-based attack vector, low attack complexity, and complete impact on confidentiality, integrity, and availability. Despite its high severity, there is no evidence of active exploitation, no known public exploit code (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.6.17CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
1.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:1.0:*:*:*:*:*:*:*
1.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:1.0:preview_release:*:*:*:*:*:*
1.0.1CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:1.0.1:*:*:*:*:*:*:*
1.0.2CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:1.0.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

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

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

Exploit Intelligence

EPSS Score
5.46%
Probability of exploitation in next 30 days
EPSS Percentile
91.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0546 is in the 86th percentile among its peer group of 51,485 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 (10)

mozillapatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: firefox-0:3.6.18-2.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: thunderbird-0:1.5.0.12-39.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: seamonkey-0:1.0.9-71.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:3.6.18-1.el5_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: xulrunner-0:1.9.2.18-2.el5_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: thunderbird-0:2.0.0.24-18.el5_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:3.6.18-1.el6_1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: xulrunner-0:1.9.2.18-2.el6_1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:3.1.11-2.el6_1
View patch

Vendor Advisories (1)

redhatCVE-2011-2374Critical

Mozilla Miscellaneous memory safety hazards (MFSA 2011-19)

Jun 21, 2011

References

lists.opensuse.org / opensuse-security-announce/2011-07/msg00001.html
bugzilla.mozilla.org / show_bug.cgi
bugzilla.mozilla.org / show_bug.cgi
bugzilla.mozilla.org / show_bug.cgi
bugzilla.mozilla.org / show_bug.cgi
bugzilla.mozilla.org / show_bug.cgi
bugzilla.mozilla.org / show_bug.cgi
Patch
bugzilla.mozilla.org / show_bug.cgi
bugzilla.mozilla.org / show_bug.cgi
secunia.com / advisories/45002
exchange.xforce.ibmcloud.com / vulnerabilities/68128
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14123
support.avaya.com / css/P8/documents/100144854
support.avaya.com / css/P8/documents/100145333
debian.org / security/2011/dsa-2268
debian.org / security/2011/dsa-2269
debian.org / security/2011/dsa-2273
mandriva.com / security/advisories
mozilla.org / security/announce/2011/mfsa2011-19.html
Vendor Advisory
redhat.com / support/errata/RHSA-2011-0885.html
redhat.com / support/errata/RHSA-2011-0886.html
redhat.com / support/errata/RHSA-2011-0887.html
redhat.com / support/errata/RHSA-2011-0888.html
ubuntu.com / usn/USN-1149-1