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CVE-2012-3423

25
FAUCET Score

CVE-2012-3423 describes a denial-of-service, information disclosure, or arbitrary code execution vulnerability in the IcedTea-Web plugin prior to version 1.2.1, affecting Red Hat IcedTea-Web. This critical vulnerability, with a CVSS score of 7.5, can be exploited remotely without authentication by crafting a malicious Java applet that mishandles NPVariant NPStrings lacking NUL terminators. While the vulnerability is significant, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or notable community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.2CPE matchmatch criteria
cpe:2.3:a:redhat:icedtea-web:*:*:*:*:*:*:*:*
1.0CPE matchmatch criteria
cpe:2.3:a:redhat:icedtea-web:1.0:*:*:*:*:*:*:*
1.1CPE matchmatch criteria
cpe:2.3:a:redhat:icedtea-web:1.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
6.17%
Probability of exploitation in next 30 days
EPSS Percentile
92.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0617 is in the 88th percentile among its peer group of 51,506 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: icedtea-web-0:1.2.1-1.el6_3
View patch

Vendor Advisories (1)

redhatCVE-2012-3423Important

icedtea-web: incorrect handling of not 0-terminated strings

Jul 31, 2012

References

icedtea.classpath.org / bugzilla/show_bug.cgi
icedtea.classpath.org / bugzilla/show_bug.cgi
Vendor Advisory
icedtea.classpath.org / hg/release/icedtea-web-1.2/file/icedtea-web-1.2.1/NEWS
icedtea.classpath.org / hg/release/icedtea-web-1.2/rev/d65bd94e0ba9
ExploitPatch
icedtea.classpath.org / hg/release/icedtea-web-1.2/rev/d7375e2a9076
ExploitPatch
lists.opensuse.org / opensuse-security-announce/2012-08/msg00003.html
lists.opensuse.org / opensuse-security-announce/2012-08/msg00004.html
lists.opensuse.org / opensuse-security-announce/2012-08/msg00005.html
lists.opensuse.org / opensuse-security-announce/2013-05/msg00020.html
lists.opensuse.org / opensuse-security-announce/2013-07/msg00013.html
lists.opensuse.org / opensuse-updates/2013-05/msg00032.html
lists.opensuse.org / opensuse-updates/2013-06/msg00030.html
lists.opensuse.org / opensuse-updates/2013-06/msg00101.html
rhn.redhat.com / errata/RHSA-2012-1132.html
bugzilla.redhat.com / show_bug.cgi
secunia.com / advisories/50089
Vendor Advisory
security.gentoo.org / glsa/glsa-201406-32.xml
ubuntu.com / usn/USN-1521-1