phf CGI program allows remote command execution through shell metacharacters.

published 1996-03-20 30y ago modified 2026-06-16 4mo ago also EUVD-1999-0067

cvss: 10.0; version 2.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 86.9%; EPSS 86.9% chance of exploitation in 30 days, percentile 99.7%
public exploits: 0; none known

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Exploit prediction

86.87% chance of exploitation in the next 30 days, higher than 99.7% of all scored CVEs (FIRST EPSS, 2026-11-14).

CVSS scores

assigned by	version	score	vector
NVD	2.0	10.0	AV:N/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness

CWE-78 Improper Neutralization of Special Elements used in an OS Command

Technology feeds

Apache HTTP Server rss critical rss

References

securityfocus.com /bid/629
vdb-entry, broken-link, third-party-advisory
osvdb.org /136
vdb-entry, broken-link
cert.org /advisories/CA-1996-06.html
third-party-advisory, us-government-resource

Sources

CVE List CVE-1999-0067
NVD CVE-1999-0067

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.