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CVE-2014-1492

21
FAUCET Score

CVE-2014-1492 describes a flaw in the certificate-checking implementation of Mozilla Network Security Services (NSS) before version 3.16. Specifically, the cert_TestHostName function incorrectly accepts embedded wildcard characters within internationalized domain name U-labels, potentially enabling man-in-the-middle (MITM) attackers to spoof SSL servers using specially crafted certificates. This vulnerability has a CVSS score of 4.3, indicating a medium severity. It can be exploited remotely with medium attack complexity, leading to a partial impact on integrity (spoofing) but no impact on confidentiality or availability. There is no evidence of active exploitation, nor are there any public exploit codes available in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal, suggesting a low level of public attention.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.15.5CPE matchmatch criteria
cpe:2.3:a:mozilla:network_security_services:*:*:*:*:*:*:*:*
3.2CPE matchmatch criteria
cpe:2.3:a:mozilla:network_security_services:3.2:*:*:*:*:*:*:*
3.2.1CPE matchmatch criteria
cpe:2.3:a:mozilla:network_security_services:3.2.1:*:*:*:*:*:*:*
3.3CPE matchmatch criteria
cpe:2.3:a:mozilla:network_security_services:3.3:*:*:*:*:*:*:*
3.3.1CPE matchmatch criteria
cpe:2.3:a:mozilla:network_security_services:3.3.1:*:*:*:*:*:*:*

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
1.77%
Probability of exploitation in next 30 days
EPSS Percentile
75.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0177 is in the 55th percentile among its peer group of 19,958 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

Patch Available

Vendor Patches (7)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: nss-0:3.16.1-2.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: nspr-0:4.10.6-1.el6_5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: nss-0:3.16.1-4.el6_5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: nss-util-0:3.16.1-1.el6_5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: nss-0:3.16.2-2.el7_0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: nss-softokn-0:3.16.2-1.el7_0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: nss-util-0:3.16.2-1.el7_0
View patch

Vendor Advisories (1)

redhatCVE-2014-1492Low

nss: IDNA hostname matching code does not follow RFC 6125 recommendation (MFSA 2014-45)

Mar 18, 2014

References

kb.juniper.net / InfoCenter/index
lists.fedoraproject.org / pipermail/package-announce/2014-May/132437.html
lists.opensuse.org / opensuse-security-announce/2014-05/msg00006.html
lists.opensuse.org / opensuse-security-announce/2014-05/msg00015.html
lists.opensuse.org / opensuse-updates/2014-05/msg00010.html
lists.opensuse.org / opensuse-updates/2014-05/msg00033.html
bugzilla.mozilla.org / show_bug.cgi
bugzilla.redhat.com / show_bug.cgi
developer.mozilla.org / en-US/docs/NSS/NSS_3.16_release_notes
seclists.org / fulldisclosure/2014/Dec/23
secunia.com / advisories/59866
secunia.com / advisories/60621
secunia.com / advisories/60794
hg.mozilla.org / projects/nss/rev/709d4e597979
ExploitPatch
security.gentoo.org / glsa/201504-01
debian.org / security/2014/dsa-2994
mozilla.org / security/announce/2014/mfsa2014-45.html
oracle.com / technetwork/topics/security/cpujan2015-1972971.html
oracle.com / technetwork/topics/security/cpujan2016-2367955.html
oracle.com / technetwork/topics/security/cpujul2014-1972956.html
oracle.com / technetwork/topics/security/cpuoct2014-1972960.html
oracle.com / technetwork/topics/security/ovmbulletinjul2016-3090546.html
securityfocus.com / archive/1/534161/100/0/threaded
securityfocus.com / bid/66356
ubuntu.com / usn/USN-2159-1
ubuntu.com / usn/USN-2185-1
vmware.com / security/advisories/VMSA-2014-0012.html