NVD / CVE Program· CNA mitre

CVE-2011-0071: 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…

MediumCVSS 5.0 · v2.0—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 21/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 2.8% (FIRST EPSS); higher than 87.1% 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.

Low priority for now. 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

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 2.0.14 on Windows allows remote attackers to determine the existence of arbitrary files, and possibly load resources, via vectors involving a resource: URL.

Published: May 7, 2011
Updated: Jun 16, 2026
EPSS: 2.8% · 87th percentile
CWE: CWE-22

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 20 / 40 · 5.0 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 1 / 30 · 2.8%

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

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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.

Vendor	Product	CPE
mozilla	firefox	cpe:2.3:a:mozilla:firefox
mozilla	seamonkey	cpe:2.3:a:mozilla:seamonkey
mozilla	thunderbird	cpe:2.3:a:mozilla:thunderbird
microsoft	windows	cpe:2.3:o:microsoft:windows

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.

Ecosystem	Package	Affected range	Fix
Debian:6.0	iceape	before 2.0.11-5	2.0.11-5
Debian:6.0	icedove	before 3.0.11-1+squeeze2	3.0.11-1+squeeze2
Debian:6.0	iceweasel	before 3.5.16-7	3.5.16-7
Red Hat:enterprise_linux:4::as	firefox	before 0:3.6.17-2.el4	0:3.6.17-2.el4
Red Hat:enterprise_linux:4::as	firefox-debuginfo	before 0:3.6.17-2.el4	0:3.6.17-2.el4
Red Hat:enterprise_linux:5::server	firefox	before 0:3.6.17-1.el5_6	0:3.6.17-1.el5_6
Red Hat:enterprise_linux:5::server	firefox-debuginfo	before 0:3.6.17-1.el5_6	0:3.6.17-1.el5_6
Red Hat:enterprise_linux:5::server	xulrunner	before 0:1.9.2.17-3.el5_6	0:1.9.2.17-3.el5_6
Red Hat:enterprise_linux:5::server	xulrunner-debuginfo	before 0:1.9.2.17-3.el5_6	0:1.9.2.17-3.el5_6
Red Hat:enterprise_linux:5::server	xulrunner-devel	before 0:1.9.2.17-3.el5_6	0:1.9.2.17-3.el5_6
Red Hat:enterprise_linux:6::client	firefox	before 0:3.6.17-1.el6_0	0:3.6.17-1.el6_0
Red Hat:enterprise_linux:6::client	firefox-debuginfo	before 0:3.6.17-1.el6_0	0:3.6.17-1.el6_0
Red Hat:enterprise_linux:6::client	thunderbird	before 0:3.1.10-1.el6_0	0:3.1.10-1.el6_0
Red Hat:enterprise_linux:6::client	thunderbird-debuginfo	before 0:3.1.10-1.el6_0	0:3.1.10-1.el6_0
Red Hat:enterprise_linux:6::client	xulrunner	before 0:1.9.2.17-4.el6_0	0:1.9.2.17-4.el6_0
Red Hat:enterprise_linux:6::client	xulrunner-debuginfo	before 0:1.9.2.17-4.el6_0	0:1.9.2.17-4.el6_0
Red Hat:enterprise_linux:6::client	xulrunner-devel	before 0:1.9.2.17-4.el6_0	0:1.9.2.17-4.el6_0

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-2011-0069May 7, 2011 · Unspecified vulnerability in the browser engine in Mozilla Firefox 3.5.x before 3.5.19, 3.6.x before 3.6.17, and 4.x before 4.0.1…
42Plan
← EarlierCVE-2011-0070May 7, 2011 · Unspecified vulnerability in the browser engine in Mozilla Firefox 3.5.x before 3.5.19, 3.6.x before 3.6.17, and 4.x before 4.0.1…
42Plan
Later →CVE-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

Remediation

Which version to upgrade to

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

Product / package	Fixed version	Source
debian:iceape	2.0.11-5 · Debian:6.0	Package registry (OSV)
debian:icedove	3.0.11-1+squeeze2 · Debian:6.0	Package registry (OSV)
debian:iceweasel	3.5.16-7 · Debian:6.0	Package registry (OSV)
red hat:firefox	0:3.6.17-2.el4 · Red Hat:enterprise_linux:4::as	Package registry (OSV)
red hat:firefox-debuginfo	0:3.6.17-2.el4 · Red Hat:enterprise_linux:4::as	Package registry (OSV)
red hat:thunderbird	0:3.1.10-1.el6_0 · Red Hat:enterprise_linux:6::client	Package registry (OSV)
red hat:thunderbird-debuginfo	0:3.1.10-1.el6_0 · Red Hat:enterprise_linux:6::client	Package registry (OSV)
red hat:xulrunner	0:1.9.2.17-3.el5_6 · Red Hat:enterprise_linux:5::server	Package registry (OSV)
red hat:xulrunner-debuginfo	0:1.9.2.17-3.el5_6 · Red Hat:enterprise_linux:5::server	Package registry (OSV)
red hat:xulrunner-devel	0:1.9.2.17-3.el5_6 · Red Hat:enterprise_linux:5::server	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

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.

No dated events beyond publication.

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: P · data can be read
Integrity: none
Availability: none

Attack complexity: Low
Confidentiality impact: P
Integrity impact: None
Availability impact: None

Weakness class (CWE)

CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSS vector

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

nvd-primary

Root cause

A user-supplied file name is joined with the allowed directory, but the result is never checked to confirm it is still inside that directory.

The bug in code

The whole CWE-22 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1const file = path.join(ROOT, req.query.name);
2res.sendFile(file);

Fixed

1const file = path.resolve(ROOT, req.query.name);
2if (!file.startsWith(ROOT + path.sep)) {
3  return res.sendStatus(400);
4}
5res.sendFile(file);

Attack context

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

Attack patterns (CAPEC)

ATT&CK techniques

—

Change log (1)

Fix✗ → ✓Sep 28, 2026, 10:46 PM UTC

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References

downloads.avaya.com/css/P8/documents/100144158

Show all references (7 more)

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

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