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NVD / CVE Program· CNA mitre

CVE-2011-0073: Mozilla Firefox before 3.5.19 and 3.6.x before 3.6.17, and SeaMonkey before 2.0.14, does not properly use nsTreeRange data structures, which…

CriticalCVSS 10.0 · v2.0—Weaponized Fix available

Noroxi assessment

Priority: This week (action score 61/100)

  • A ready-made attack module is public (Metasploit); exploiting it takes no special expertise.
  • Public proof-of-concept code exists (Exploit-DB); there is no record of exploitation in the wild.
  • Probability of exploitation in the next 30 days: 70.8% (FIRST EPSS); higher than 99.4% of all records.
  • No special conditions are required; it is repeatable.
  • Fixed version: iceape (Debian:6.0) 2.0.11-5; icedove (Debian:6.0) 3.0.11-1+squeeze2; iceweasel (Debian:6.0) 3.5.16-7.

Don’t wait for the next maintenance window. Upgrade to iceape (Debian:6.0) 2.0.11-5; icedove (Debian:6.0) 3.0.11-1+squeeze2; iceweasel (Debian:6.0) 3.5.16-7 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Mozilla Firefox before 3.5.19 and 3.6.x before 3.6.17, and SeaMonkey before 2.0.14, does not properly use nsTreeRange data structures, which allows remote attackers to execute arbitrary code via unspecified vectors that lead to a "dangling pointer."

Published
May 7, 2011
Updated
Jun 16, 2026
EPSS
70.8% · 99th percentile

Report tools

JSON

Action score

61

This week

Don’t wait for the next maintenance window.

CVSS
40 / 40 · 10.0 / 10
CISA KEV
0 / 30 · Not listed
EPSS
21 / 30 · 70.8%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • Weaponized exploit exists
  • A fix has been released

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  • when exploit code appears or is weaponized
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  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
mozillafirefox
mozillaseamonkey

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • mozilla firefoxup to 3.5.18 inclusive
  • mozilla firefox1.0
  • mozilla firefox1.0.1
  • mozilla firefox1.0.2
  • mozilla firefox1.0.3
  • mozilla firefox1.0.4
  • mozilla firefox1.0.5
  • mozilla firefox1.0.6
+12 more rows
  • mozilla firefox1.0.7
  • mozilla firefox1.0.8
  • mozilla firefox1.5
  • mozilla firefox1.5.0.1
  • mozilla firefox1.5.0.10
  • mozilla firefox1.5.0.11
  • mozilla firefox1.5.0.12
  • mozilla firefox1.5.0.2
  • mozilla firefox1.5.0.3
  • mozilla firefox1.5.0.4
  • mozilla firefox1.5.0.5
  • mozilla firefox1.5.0.6

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:6.0iceapebefore 2.0.11-52.0.11-5
Debian:6.0icedovebefore 3.0.11-1+squeeze23.0.11-1+squeeze2
Debian:6.0iceweaselbefore 3.5.16-73.5.16-7
Red Hat:enterprise_linux:4::asfirefoxbefore 0:3.6.17-2.el40:3.6.17-2.el4
Red Hat:enterprise_linux:4::asfirefox-debuginfobefore 0:3.6.17-2.el40:3.6.17-2.el4
Red Hat:enterprise_linux:4::asseamonkeybefore 0:1.0.9-70.el4_80:1.0.9-70.el4_8
Red Hat:enterprise_linux:4::asseamonkey-chatbefore 0:1.0.9-70.el4_80:1.0.9-70.el4_8
Red Hat:enterprise_linux:4::asseamonkey-debuginfobefore 0:1.0.9-70.el4_80:1.0.9-70.el4_8
Red Hat:enterprise_linux:4::asseamonkey-develbefore 0:1.0.9-70.el4_80:1.0.9-70.el4_8
Red Hat:enterprise_linux:4::asseamonkey-dom-inspectorbefore 0:1.0.9-70.el4_80:1.0.9-70.el4_8
Red Hat:enterprise_linux:4::asseamonkey-js-debuggerbefore 0:1.0.9-70.el4_80:1.0.9-70.el4_8
Red Hat:enterprise_linux:4::asseamonkey-mailbefore 0:1.0.9-70.el4_80:1.0.9-70.el4_8
Red Hat:enterprise_linux:4::asthunderbirdbefore 0:1.5.0.12-38.el40:1.5.0.12-38.el4
Red Hat:enterprise_linux:4::asthunderbird-debuginfobefore 0:1.5.0.12-38.el40:1.5.0.12-38.el4
Red Hat:enterprise_linux:5::clientthunderbirdbefore 0:2.0.0.24-17.el5_60:2.0.0.24-17.el5_6
Red Hat:enterprise_linux:5::clientthunderbird-debuginfobefore 0:2.0.0.24-17.el5_60:2.0.0.24-17.el5_6
Red Hat:enterprise_linux:5::serverfirefoxbefore 0:3.6.17-1.el5_60:3.6.17-1.el5_6
Red Hat:enterprise_linux:5::serverfirefox-debuginfobefore 0:3.6.17-1.el5_60:3.6.17-1.el5_6
Red Hat:enterprise_linux:5::serverxulrunnerbefore 0:1.9.2.17-3.el5_60:1.9.2.17-3.el5_6
Red Hat:enterprise_linux:5::serverxulrunner-debuginfobefore 0:1.9.2.17-3.el5_60:1.9.2.17-3.el5_6
Red Hat:enterprise_linux:5::serverxulrunner-develbefore 0:1.9.2.17-3.el5_60:1.9.2.17-3.el5_6
Red Hat:enterprise_linux:6::clientfirefoxbefore 0:3.6.17-1.el6_00:3.6.17-1.el6_0
Red Hat:enterprise_linux:6::clientfirefox-debuginfobefore 0:3.6.17-1.el6_00:3.6.17-1.el6_0
Red Hat:enterprise_linux:6::clientthunderbirdbefore 0:3.1.10-1.el6_00:3.1.10-1.el6_0

+4

Same product

mozilla: all records

Other highest-scoring records for the same primary product.

  • CVE-2010-3765Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before 3.1.6 and 3.0.x before 3.0.10, and SeaMonkey 2.x…KEV
    94Now
  • CVE-2019-11708Insufficient vetting of parameters passed with the Prompt:Open IPC message between child and parent processes can result in the…KEV
    87Now
  • CVE-2015-4495The PDF reader in Mozilla Firefox before 39.0.3, Firefox ESR 38.x before 38.1.1, and Firefox OS before 2.2 allows remote attackers to…KEV
    86Now

Published before and after this one in the same product

  • ← EarlierCVE-2011-0071May 7, 2011 · Directory traversal vulnerability in Mozilla Firefox before 3.5.19 and 3.6.x before 3.6.17, Thunderbird before 3.1.10, and SeaMonkey before…
    21Monitor
  • ← EarlierCVE-2011-0072May 7, 2011 · Unspecified vulnerability in the browser engine in Mozilla Firefox 3.5.x before 3.5.19 and 3.6.x before 3.6.17, Thunderbird before 3.1.10…
    42Plan
  • Later →CVE-2011-0074May 7, 2011 · Unspecified vulnerability in the browser engine in Mozilla Firefox 3.5.x before 3.5.19 and 3.6.x before 3.6.17, Thunderbird before 3.1.10…
    42Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:iceape2.0.11-5 · Debian:6.0Package registry (OSV)
debian:icedove3.0.11-1+squeeze2 · Debian:6.0Package registry (OSV)
debian:iceweasel3.5.16-7 · Debian:6.0Package registry (OSV)
red hat:firefox0:3.6.17-2.el4 · Red Hat:enterprise_linux:4::asPackage registry (OSV)
red hat:firefox-debuginfo0:3.6.17-2.el4 · Red Hat:enterprise_linux:4::asPackage registry (OSV)
red hat:seamonkey0:1.0.9-70.el4_8 · Red Hat:enterprise_linux:4::asPackage registry (OSV)
red hat:seamonkey-chat0:1.0.9-70.el4_8 · Red Hat:enterprise_linux:4::asPackage registry (OSV)
red hat:seamonkey-debuginfo0:1.0.9-70.el4_8 · Red Hat:enterprise_linux:4::asPackage registry (OSV)
red hat:seamonkey-devel0:1.0.9-70.el4_8 · Red Hat:enterprise_linux:4::asPackage registry (OSV)
red hat:seamonkey-dom-inspector0:1.0.9-70.el4_8 · Red Hat:enterprise_linux:4::asPackage registry (OSV)
red hat:seamonkey-js-debugger0:1.0.9-70.el4_8 · Red Hat:enterprise_linux:4::asPackage registry (OSV)
red hat:seamonkey-mail0:1.0.9-70.el4_8 · Red Hat:enterprise_linux:4::asPackage registry (OSV)
red hat:xulrunner0:1.9.2.17-3.el5_6 · Red Hat:enterprise_linux:5::serverPackage registry (OSV)
red hat:xulrunner-debuginfo0:1.9.2.17-3.el5_6 · Red Hat:enterprise_linux:5::serverPackage registry (OSV)
red hat:xulrunner-devel0:1.9.2.17-3.el5_6 · Red Hat:enterprise_linux:5::serverPackage registry (OSV)

Exploit status

Weaponized

A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.

Evidence

  • Metasploit module ×1
  • Exploit-DB entry ×2

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Exploit-DB entryremote2011-06-20
Exploit-DB entryremote2011-07-10
Metasploit moduleexploit/windows/browser/mozilla_nstreerangeMozilla Firefox "nsTreeRange" Dangling Pointer Vulnerabilityexploit2011-02-02

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Metasploit-95 d
  2. Published
  3. First PoC+43 d
  4. TodayNov 15, 2026+5671 d

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • No special conditions are required; it is repeatable.

If successful

Confidentiality
C · data can be read
Integrity
C · data or configuration can be modified
Availability
C · the service can be disrupted
Attack complexity
Low
Confidentiality impact
C
Integrity impact
C
Availability impact
C

Weakness class (CWE)

CWE-20 · Improper Input Validation

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

References

Show all references (9 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records