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CVE-2012-4823

30
FAUCET Score

CVE-2012-4823 is an unspecified vulnerability within the JRE component of various IBM Java versions and products, including Rational Host On-Demand, Tivoli Monitoring, and Lotus Notes & Domino, as well as offerings from other vendors like Red Hat. This critical vulnerability, with a CVSS score of 9.3, allows remote attackers to execute arbitrary code due to an insecure use of the java.lang.ClassLoader defineClass() method. While the FAUCET Risk Score is high at 90/100, 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
>= 1.4.2, <= 1.4.2.13.13CPE matchmatch criteria
cpe:2.3:a:ibm:java:*:*:*:*:*:*:*:*
>= 5.0.0.0, <= 5.0.14.0CPE matchmatch criteria
cpe:2.3:a:ibm:java:*:*:*:*:*:*:*:*
>= 6.0.0.0, <= 6.0.11.0CPE matchmatch criteria
cpe:2.3:a:ibm:java:*:*:*:*:*:*:*:*
>= 7.0.0.0, <= 7.0.2.0CPE matchmatch criteria
cpe:2.3:a:ibm:java:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:a:ibm:lotus_domino:8.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
6.86%
Probability of exploitation in next 30 days
EPSS Percentile
93.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0686 is in the 70th percentile among its peer group of 8,914 CVEs.

Social Chatter

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

Remediation

Patch Available

Vendor Patches (5)

redhatpatch availablevia redhat_api
Product: Red Hat Network Satellite Server v 5.4Fixed in: java-1.6.0-ibm-1:1.6.0.14.0-1jpp.1.el5_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Network Satellite Server v 5.5Fixed in: java-1.6.0-ibm-1:1.6.0.14.0-1jpp.1.el5_9
View patch
redhatpatch availablevia redhat_api
Product: Supplementary for Red Hat Enterprise Linux 5Fixed in: java-1.6.0-ibm-1:1.6.0.12.0-1jpp.1.el5_8
View patch
redhatpatch availablevia redhat_api
Product: Supplementary for Red Hat Enterprise Linux 6Fixed in: java-1.6.0-ibm-1:1.6.0.12.0-1jpp.1.el6_3
View patch
redhatpatch availablevia redhat_api
Product: Supplementary for Red Hat Enterprise Linux 6Fixed in: java-1.7.0-ibm-1:1.7.0.3.0-1jpp.2.el6_3
View patch

Vendor Advisories (1)

redhatCVE-2012-4823Important

JDK: java.lang.ClassLoder defineClass() code execution

Nov 13, 2012

References

rhn.redhat.com / errata/RHSA-2012-1466.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2012-1467.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2013-1455.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2013-1456.html
Third Party Advisory
seclists.org / bugtraq/2012/Sep/38
Mailing ListThird Party Advisory
secunia.com / advisories/51326
Third Party Advisory
secunia.com / advisories/51327
Third Party Advisory
secunia.com / advisories/51634
Third Party Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/78767
VDB Entry
www-304.ibm.com / support/docview.wss
Vendor Advisory
www-01.ibm.com / support/docview.wss
Vendor Advisory
www-01.ibm.com / support/docview.wss
Vendor Advisory
www-01.ibm.com / support/docview.wss
Vendor Advisory
www-01.ibm.com / support/docview.wss
Vendor Advisory
www-01.ibm.com / support/docview.wss
Vendor Advisory
www-01.ibm.com / support/docview.wss
Vendor Advisory
www-01.ibm.com / support/docview.wss
Vendor Advisory
www-01.ibm.com / support/docview.wss
Vendor Advisory
www-01.ibm.com / support/docview.wss
Vendor Advisory
www-01.ibm.com / support/docview.wss
Vendor Advisory
securityfocus.com / bid/55495
Third Party AdvisoryVDB Entry