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CVE-2012-0441

19
FAUCET Score

CVE-2012-0441 describes a denial-of-service vulnerability in the ASN.1 decoder within Mozilla Network Security Services (NSS) versions prior to 3.13.4, impacting Firefox, Thunderbird, and SeaMonkey. An attacker could trigger an application crash by providing a specially crafted zero-length item in an OCSP response or basic constraint. With a CVSS score of 5.0, this vulnerability is rated as medium severity, requiring no authentication and having low attack complexity, but only resulting in a partial availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding 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

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.94%
Probability of exploitation in next 30 days
EPSS Percentile
85.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0295 is in the 80th percentile among its peer group of 23,701 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 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

Patch Available

Vendor Patches (6)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: nspr-0:4.9.1-4.el5_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: nss-0:3.13.5-4.el5_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: nspr-0:4.9.1-2.el6_3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: nss-0:3.13.5-1.el6_3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: nss-util-0:3.13.5-1.el6_3
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2012-0441Moderate

nss: NSS parsing errors with zero length items

Jun 5, 2012

References

lists.opensuse.org / opensuse-security-announce/2012-06/msg00012.html
lists.opensuse.org / opensuse-security-announce/2012-06/msg00015.html
bugzilla.mozilla.org / show_bug.cgi
secunia.com / advisories/49976
secunia.com / advisories/50316
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16701
debian.org / security/2012/dsa-2490
mandriva.com / security/advisories
mozilla.org / security/announce/2012/mfsa2012-39.html
Vendor Advisory
oracle.com / technetwork/topics/security/ovmbulletinjul2016-3090546.html
securityfocus.com / bid/53798
ubuntu.com / usn/USN-1540-1
ubuntu.com / usn/USN-1540-2