Is CVE-2003-1229 in the CISA KEV catalog?

No. CVE-2003-1229 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2003-1229?

CVE-2003-1229 has a CVSS v2 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2003-1229?

CVE-2003-1229 has an EPSS score of 4.63% (91th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2003-1229?

No published fix for CVE-2003-1229 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2003-1229

HIGHEPSS 91th pctl

7.5

CVSS v2

NVD

Description

X509TrustManager in (1) Java Secure Socket Extension (JSSE) in SDK and JRE 1.4.0 through 1.4.0_01, (2) JSSE before 1.0.3, (3) Java Plug-in SDK and JRE 1.3.0 through 1.4.1, and (4) Java Web Start 1.0 through 1.2 incorrectly calls the isClientTrusted method when determining server trust, which results in improper validation of digital certificate and allows remote attackers to (1) falsely authenticate peers for SSL or (2) incorrectly validate signed JAR files.

CWE-295Improper Certificate Validation

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

4.63%probability of exploitation in 30 days

91stpercentile

High risk: more likely to be exploited than 91% of all known CVEs.

References

Patch3

Vendor Advisory1

java.sun.com

Third-Party Advisory4

Other references3

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-16.