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CVE-2011-2995

32
FAUCET Score

CVE-2011-2995 describes multiple unspecified vulnerabilities within the browser engine of Mozilla Firefox (versions before 3.6.23 and 4.x through 6), Thunderbird (before 7.0), and SeaMonkey (before 2.4). These vulnerabilities carry a critical CVSS score of 10.0, indicating that an unauthenticated attacker could remotely trigger a denial of service through memory corruption and application crashes, or potentially execute arbitrary code. Despite its high severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.6.22CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
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:*:*:*:*:*:*:*

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
4.37%
Probability of exploitation in next 30 days
EPSS Percentile
90.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0437 is in the 83rd percentile among its peer group of 51,455 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 (13)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:3.1.15-1.el6_1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: firefox-0:3.6.23-1.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:3.6.23-2.el5_7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: xulrunner-0:1.9.2.23-1.el5_7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:3.6.23-2.el6_1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: xulrunner-0:1.9.2.23-1.el6_1.1
View patch
mozillavendor investigatingvia nvd_reference
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: seamonkey
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: thunderbird
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux Extended Update Support 5.7Fixed in: firefox
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux Extended Update Support 5.7Fixed in: thunderbird
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux Extended Update Support 6.1Fixed in: firefox
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux Extended Update Support 6.1Fixed in: thunderbird

Vendor Advisories (1)

redhatCVE-2011-2995Critical

Mozilla: Miscellaneous memory safety hazards (MFSA 2011-36)

Sep 28, 2011

References

lists.opensuse.org / opensuse-updates/2011-10/msg00002.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
secunia.com / advisories/46315
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13957
debian.org / security/2011/dsa-2312
debian.org / security/2011/dsa-2313
debian.org / security/2011/dsa-2317
mandriva.com / security/advisories
mandriva.com / security/advisories
mandriva.com / security/advisories
mandriva.com / security/advisories
mozilla.org / security/announce/2011/mfsa2011-36.html
Vendor Advisory
redhat.com / support/errata/RHSA-2011-1341.html