Is CVE-2002-0839 in the CISA KEV catalog?

No. CVE-2002-0839 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2002-0839?

CVE-2002-0839 has a CVSS v2 base score of 7.2 (HIGH).

What is the EPSS score for CVE-2002-0839?

CVE-2002-0839 has an EPSS score of 0.94% (57th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2002-0839?

Upgrade Apache Lounge httpd to 1.3.27 or later.

CVE & CISA-KEV Catalog

CVE-2002-0839

HIGH

7.2

CVSS v2

NVD

Description

The shared memory scoreboard in the HTTP daemon for Apache 1.3.x before 1.3.27 allows any user running as the Apache UID to send a SIGUSR1 signal to any process as root, resulting in a denial of service (process kill) or possibly other behaviors that would not normally be allowed, by modifying the parent[].pid and parent[].last_rtime segments in the scoreboard.

How to fix

Remediation Available

Apache Lounge httpdWindows application

Affected:1.3.0 1.3.27Fixed in:1.3.27Apache Lounge

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

0.94%probability of exploitation in 30 days

57thpercentile

Moderate risk: more likely to be exploited than 57% of all known CVEs.

References

Patch1

archives.neohapsis.com

Vendor Advisory2

Third-Party Advisory9

Other references10

Embed a live status badge for CVE-2002-0839

Markdown

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HTML

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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.