Is CVE-2004-0542 in the CISA KEV catalog?

No. CVE-2004-0542 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2004-0542?

CVE-2004-0542 has a CVSS v2 base score of 10.0 (HIGH).

What is the EPSS score for CVE-2004-0542?

CVE-2004-0542 has an EPSS score of 31.11% (98th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2004-0542

HIGHEPSS 98th pctl

10.0

CVSS v2

NVD

Description

PHP before 4.3.7 on Win32 platforms does not properly filter all shell metacharacters, which allows local or remote attackers to execute arbitrary code, overwrite files, and access internal environment variables via (1) the "%", "|", or ">" characters to the escapeshellcmd function, or (2) the "%" character to the escapeshellarg function.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

31.11%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% 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.