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CVE-2011-0082

17
FAUCET Score

CVE-2011-0082 describes a flaw in Mozilla Firefox versions 4.0.x through 4.0.1 where X.509 certificate validation inadequately handles single-session security exceptions. This vulnerability could allow a user-assisted remote attacker to spoof an SSL server, potentially leading to unwanted local caching of documents from that server. With a CVSS score of 4.3 (Medium), it has a network attack vector and medium attack complexity, resulting in a partial integrity impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage for this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
4.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:4.0:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:4.0:beta1:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:4.0:beta10:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:4.0:beta11:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:4.0:beta12:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.50%
Probability of exploitation in next 30 days
EPSS Percentile
71.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0150 is in the 45th percentile among its peer group of 19,956 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2011-0082Moderate

firefox: doesn't (re)validate certificates when loading HTTPS page

May 21, 2011

References

bugs.debian.org / cgi-bin/bugreport.cgi
Exploit
openwall.com / lists/oss-security/2011/05/31/14
Exploit
openwall.com / lists/oss-security/2011/05/31/18
Exploit
openwall.com / lists/oss-security/2011/05/31/4
Exploit
openwall.com / lists/oss-security/2011/05/31/9
Exploit
bugzilla.mozilla.org / show_bug.cgi
Exploit
bugzilla.redhat.com / show_bug.cgi
Exploit
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14145
securityfocus.com / bid/48064