CVE-2011-0073 [Critical] | Input Validation Bypass in Firefox

CVE-2011-0073 is rated High Exploit Risk (84.8/100): CVSS Critical severity, with high exploitation likelihood (EPSS 69.98%, 99th percentile). 2 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

EDB-ID	Source	Kind	Published	Link
17520	exploit_db	edb	2011-07-10	Exploit-DB ↗
17419	exploit_db	edb	2011-06-20	Exploit-DB ↗

EDB-ID

Source

Kind

Published

Link

17520

exploit_db

edb

2011-07-10

Exploit-DB ↗

17419

exploit_db

edb

2011-06-20

Exploit-DB ↗

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	81.16%	69.98%	-11.18%
2	2025-03-17	96.80%	81.16%	-15.63%
3	2024-12-28	—	96.80%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

81.16%

69.98%

-11.18%

2025-03-17

96.80%

81.16%

-15.63%

2024-12-28

—

96.80%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
10.0	2.0	HIGH	`AV:N/AC:L/Au:N/C:C/I:C/A:C` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:L) Exploitation conditions are straightforward and predictable. Authentication (AU:N) No authentication is required. Confidentiality impact (C:C) Complete confidentiality impact. Integrity impact (I:C) Complete integrity impact. Availability impact (A:C) Complete availability impact.	10.0	10.0	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

10.0

2.0

HIGH

AV:N/AC:L/Au:N/C:C/I:C/A:C Click to expand

Access vector (AV:N): Can be exploited remotely over network reachability.
Access complexity (AC:L): Exploitation conditions are straightforward and predictable.
Authentication (AU:N): No authentication is required.
Confidentiality impact (C:C): Complete confidentiality impact.
Integrity impact (I:C): Complete integrity impact.
Availability impact (A:C): Complete availability impact.

10.0

[email protected]

OS Trackers for CVE-2011-0073

vendor	priority	summary	link
`gentoo`	high	CVE-2011-0073: 1 GLSA(s) (201301-01), 14 atom(s) (dev-libs/nss, mail-client/mozilla-thunderbird, …); latest impact high.	https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2011-0073
`redhat`	critical	—	https://access.redhat.com/security/cve/CVE-2011-0073
`ubuntu`	medium	CVE-2011-0073 medium priority: Ubuntu including 6 source packages (firefox, firefox-3.0, firefox-3.5, seamonkey, thunderbird, xulrunner-1.9.2), 68 status rows across 12 suites (dapper, hardy, karmic, lucid, maverick, natty, oneiric, precise, quantal, raring, saucy, upstream): DNE 31, released 16, not-affected 11, ignored 8, needs-triage 2.	https://ubuntu.com/security/CVE-2011-0073

Affected software / configurations for CVE-2011-0073

Vendor	Product	Version	Raw CPE
mozilla	firefox	3.6	cpe:2.3:a:mozilla:firefox:3.6:::::::*
mozilla	firefox	3.6.2	cpe:2.3:a:mozilla:firefox:3.6.2:::::::*
mozilla	firefox	3.6.3	cpe:2.3:a:mozilla:firefox:3.6.3:::::::*
mozilla	firefox	3.6.4	cpe:2.3:a:mozilla:firefox:3.6.4:::::::*
mozilla	firefox	3.6.6	cpe:2.3:a:mozilla:firefox:3.6.6:::::::*
mozilla	firefox	3.6.7	cpe:2.3:a:mozilla:firefox:3.6.7:::::::*
mozilla	firefox	3.6.8	cpe:2.3:a:mozilla:firefox:3.6.8:::::::*
mozilla	firefox	3.6.9	cpe:2.3:a:mozilla:firefox:3.6.9:::::::*
mozilla	firefox	3.6.10	cpe:2.3:a:mozilla:firefox:3.6.10:::::::*
mozilla	firefox	3.6.11	cpe:2.3:a:mozilla:firefox:3.6.11:::::::*
mozilla	firefox	3.6.12	cpe:2.3:a:mozilla:firefox:3.6.12:::::::*
mozilla	firefox	3.6.13	cpe:2.3:a:mozilla:firefox:3.6.13:::::::*
mozilla	firefox	3.6.14	cpe:2.3:a:mozilla:firefox:3.6.14:::::::*
mozilla	firefox	3.6.15	cpe:2.3:a:mozilla:firefox:3.6.15:::::::*
mozilla	firefox	3.6.16	cpe:2.3:a:mozilla:firefox:3.6.16:::::::*
mozilla	seamonkey	<= 2.0.13	cpe:2.3:a:mozilla:seamonkey::::::::
mozilla	seamonkey	1.0	cpe:2.3:a:mozilla:seamonkey:1.0:::::::*
mozilla	seamonkey	1.0	cpe:2.3:a:mozilla:seamonkey:1.0:alpha::::::
mozilla	seamonkey	1.0	cpe:2.3:a:mozilla:seamonkey:1.0:beta::::::
mozilla	seamonkey	1.0.1	cpe:2.3:a:mozilla:seamonkey:1.0.1:::::::*
mozilla	seamonkey	1.0.2	cpe:2.3:a:mozilla:seamonkey:1.0.2:::::::*
mozilla	seamonkey	1.0.3	cpe:2.3:a:mozilla:seamonkey:1.0.3:::::::*
mozilla	seamonkey	1.0.4	cpe:2.3:a:mozilla:seamonkey:1.0.4:::::::*
mozilla	seamonkey	1.0.5	cpe:2.3:a:mozilla:seamonkey:1.0.5:::::::*
mozilla	seamonkey	1.0.6	cpe:2.3:a:mozilla:seamonkey:1.0.6:::::::*
mozilla	seamonkey	1.0.7	cpe:2.3:a:mozilla:seamonkey:1.0.7:::::::*
mozilla	seamonkey	1.0.8	cpe:2.3:a:mozilla:seamonkey:1.0.8:::::::*
mozilla	seamonkey	1.0.9	cpe:2.3:a:mozilla:seamonkey:1.0.9:::::::*
mozilla	seamonkey	1.1	cpe:2.3:a:mozilla:seamonkey:1.1:::::::*
mozilla	seamonkey	1.1	cpe:2.3:a:mozilla:seamonkey:1.1:alpha::::::
mozilla	seamonkey	1.1	cpe:2.3:a:mozilla:seamonkey:1.1:beta::::::
mozilla	seamonkey	1.1.1	cpe:2.3:a:mozilla:seamonkey:1.1.1:::::::*
mozilla	seamonkey	1.1.2	cpe:2.3:a:mozilla:seamonkey:1.1.2:::::::*
mozilla	seamonkey	1.1.3	cpe:2.3:a:mozilla:seamonkey:1.1.3:::::::*
mozilla	seamonkey	1.1.4	cpe:2.3:a:mozilla:seamonkey:1.1.4:::::::*
mozilla	seamonkey	1.1.5	cpe:2.3:a:mozilla:seamonkey:1.1.5:::::::*
mozilla	seamonkey	1.1.6	cpe:2.3:a:mozilla:seamonkey:1.1.6:::::::*
mozilla	seamonkey	1.1.7	cpe:2.3:a:mozilla:seamonkey:1.1.7:::::::*
mozilla	seamonkey	1.1.8	cpe:2.3:a:mozilla:seamonkey:1.1.8:::::::*
mozilla	seamonkey	1.1.9	cpe:2.3:a:mozilla:seamonkey:1.1.9:::::::*
mozilla	seamonkey	1.1.10	cpe:2.3:a:mozilla:seamonkey:1.1.10:::::::*
mozilla	seamonkey	1.1.11	cpe:2.3:a:mozilla:seamonkey:1.1.11:::::::*
mozilla	seamonkey	1.1.12	cpe:2.3:a:mozilla:seamonkey:1.1.12:::::::*
mozilla	seamonkey	1.1.13	cpe:2.3:a:mozilla:seamonkey:1.1.13:::::::*
mozilla	seamonkey	1.1.14	cpe:2.3:a:mozilla:seamonkey:1.1.14:::::::*
mozilla	seamonkey	1.1.15	cpe:2.3:a:mozilla:seamonkey:1.1.15:::::::*
mozilla	seamonkey	1.1.16	cpe:2.3:a:mozilla:seamonkey:1.1.16:::::::*
mozilla	seamonkey	1.1.17	cpe:2.3:a:mozilla:seamonkey:1.1.17:::::::*
mozilla	seamonkey	1.1.18	cpe:2.3:a:mozilla:seamonkey:1.1.18:::::::*
mozilla	seamonkey	1.1.19	cpe:2.3:a:mozilla:seamonkey:1.1.19:::::::*
mozilla	seamonkey	1.5.0.8	cpe:2.3:a:mozilla:seamonkey:1.5.0.8:::::::*
mozilla	seamonkey	1.5.0.9	cpe:2.3:a:mozilla:seamonkey:1.5.0.9:::::::*
mozilla	seamonkey	1.5.0.10	cpe:2.3:a:mozilla:seamonkey:1.5.0.10:::::::*
mozilla	seamonkey	2.0	cpe:2.3:a:mozilla:seamonkey:2.0:::::::*
mozilla	seamonkey	2.0	cpe:2.3:a:mozilla:seamonkey:2.0:alpha_1::::::
mozilla	seamonkey	2.0	cpe:2.3:a:mozilla:seamonkey:2.0:alpha_2::::::
mozilla	seamonkey	2.0	cpe:2.3:a:mozilla:seamonkey:2.0:alpha_3::::::
mozilla	seamonkey	2.0	cpe:2.3:a:mozilla:seamonkey:2.0:beta_1::::::
mozilla	seamonkey	2.0	cpe:2.3:a:mozilla:seamonkey:2.0:beta_2::::::
mozilla	seamonkey	2.0	cpe:2.3:a:mozilla:seamonkey:2.0:rc1::::::
mozilla	seamonkey	2.0	cpe:2.3:a:mozilla:seamonkey:2.0:rc2::::::
mozilla	seamonkey	2.0.1	cpe:2.3:a:mozilla:seamonkey:2.0.1:::::::*
mozilla	seamonkey	2.0.2	cpe:2.3:a:mozilla:seamonkey:2.0.2:::::::*
mozilla	seamonkey	2.0.3	cpe:2.3:a:mozilla:seamonkey:2.0.3:::::::*
mozilla	seamonkey	2.0.4	cpe:2.3:a:mozilla:seamonkey:2.0.4:::::::*
mozilla	seamonkey	2.0.5	cpe:2.3:a:mozilla:seamonkey:2.0.5:::::::*
mozilla	seamonkey	2.0.6	cpe:2.3:a:mozilla:seamonkey:2.0.6:::::::*
mozilla	seamonkey	2.0.7	cpe:2.3:a:mozilla:seamonkey:2.0.7:::::::*
mozilla	seamonkey	2.0.8	cpe:2.3:a:mozilla:seamonkey:2.0.8:::::::*
mozilla	seamonkey	2.0.9	cpe:2.3:a:mozilla:seamonkey:2.0.9:::::::*
mozilla	seamonkey	2.0.10	cpe:2.3:a:mozilla:seamonkey:2.0.10:::::::*
mozilla	seamonkey	2.0.11	cpe:2.3:a:mozilla:seamonkey:2.0.11:::::::*
mozilla	seamonkey	2.0.12	cpe:2.3:a:mozilla:seamonkey:2.0.12:::::::*
mozilla	firefox	<= 3.5.18	cpe:2.3:a:mozilla:firefox::::::::
mozilla	firefox	1.0	cpe:2.3:a:mozilla:firefox:1.0:::::::*
mozilla	firefox	1.0	cpe:2.3:a:mozilla:firefox:1.0:preview_release::::::
mozilla	firefox	1.0.1	cpe:2.3:a:mozilla:firefox:1.0.1:::::::*
mozilla	firefox	1.0.2	cpe:2.3:a:mozilla:firefox:1.0.2:::::::*
mozilla	firefox	1.0.3	cpe:2.3:a:mozilla:firefox:1.0.3:::::::*
mozilla	firefox	1.0.4	cpe:2.3:a:mozilla:firefox:1.0.4:::::::*

References for CVE-2011-0073

URL	Tags
http://downloads.avaya.com/css/P8/documents/100134543
http://downloads.avaya.com/css/P8/documents/100144158
http://securityreason.com/securityalert/8310
http://www.debian.org/security/2011/dsa-2227
http://www.debian.org/security/2011/dsa-2228
http://www.debian.org/security/2011/dsa-2235
http://www.mandriva.com/security/advisories?name=MDVSA-2011:079
http://www.mozilla.org/security/announce/2011/mfsa2011-13.html	Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=630919
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14020

URL

CVE-2011-0073

Public exploit references (Exploit-DB) for CVE-2011-0073

Exploit prediction scoring system (EPSS) score for CVE-2011-0073

Common vulnerability scoring system (CVSS) metrics for CVE-2011-0073

Weakness enumeration for CVE-2011-0073

OS Trackers for CVE-2011-0073

Affected software / configurations for CVE-2011-0073

References for CVE-2011-0073