Is CVE-2002-0840 in the CISA KEV catalog?

No. CVE-2002-0840 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2002-0840?

CVE-2002-0840 has a CVSS v2 base score of 6.8 (MEDIUM).

What is the EPSS score for CVE-2002-0840?

CVE-2002-0840 has an EPSS score of 94.01% (100th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2002-0840

MEDIUMEPSS 100th pctl

6.8

CVSS v2

NVD

Description

Cross-site scripting (XSS) vulnerability in the default error page of Apache 2.0 before 2.0.43, and 1.3.x up to 1.3.26, when UseCanonicalName is "Off" and support for wildcard DNS is present, allows remote attackers to execute script as other web page visitors via the Host: header, a different vulnerability than CAN-2002-1157.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

94.01%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

References

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

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.