Is CVE-2003-0189 in the CISA KEV catalog?

No. CVE-2003-0189 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2003-0189?

CVE-2003-0189 has a CVSS v2 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2003-0189?

CVE-2003-0189 has an EPSS score of 15.12% (96th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2003-0189

MEDIUMEPSS 96th pctl

5.0

CVSS v2

NVD

Description

The authentication module for Apache 2.0.40 through 2.0.45 on Unix does not properly handle threads safely when using the crypt_r or crypt functions, which allows remote attackers to cause a denial of service (failed Basic authentication with valid usernames and passwords) when a threaded MPM is used.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

15.12%probability of exploitation in 30 days

96thpercentile

Very high risk: more likely to be exploited than 96% of all known CVEs.

References

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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.