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CVE-2011-0073

85
FAUCET Score

CVE-2011-0073 describes a critical dangling pointer vulnerability in Mozilla Firefox versions prior to 3.5.19 and 3.6.17, and SeaMonkey before 2.0.14, stemming from improper use of nsTreeRange data structures. This flaw allows remote attackers to execute arbitrary code with maximum impact on confidentiality, integrity, and availability. With a CVSS score of 10.0 and an EPSS score indicating high exploitability, this vulnerability is considered extremely severe. Exploit code, including a Metasploit module and ExploitDB entries, is publicly available, though there is no indication of active exploitation in the wild or significant community discussion.

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

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
70.21%
Probability of exploitation in next 30 days
EPSS Percentile
99.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
Metasploit: Mozilla Firefox "nsTreeRange" Dangling Pointer Vulnerability · Feb 2, 2011
ExploitDB: EDB-17520 · Jul 10, 2011
This CVE's current EPSS score of 0.7021 is in the 99th 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)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:3.1.10-1.el6_0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: firefox-0:3.6.17-2.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: seamonkey-0:1.0.9-70.el4_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: thunderbird-0:1.5.0.12-38.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:3.6.17-1.el5_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: xulrunner-0:1.9.2.17-3.el5_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: thunderbird-0:2.0.0.24-17.el5_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:3.6.17-1.el6_0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: xulrunner-0:1.9.2.17-4.el6_0
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2011-0073Critical

Mozilla dangling pointer flaw (MFSA 2011-13)

Apr 28, 2011

References

downloads.avaya.com / css/P8/documents/100134543
downloads.avaya.com / css/P8/documents/100144158
bugzilla.mozilla.org / show_bug.cgi
securityreason.com / securityalert/8310
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14020
debian.org / security/2011/dsa-2227
debian.org / security/2011/dsa-2228
debian.org / security/2011/dsa-2235
mandriva.com / security/advisories
mozilla.org / security/announce/2011/mfsa2011-13.html
Vendor Advisory