CVE-1999-0067

CRITICAL

phf CGI program allows remote command execution through shell metacharacters.

Affects 2 products across 2 vendors.

BCS7.99
CVSS 2.010.0
EPSS86.9%
Percentile100th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity.
CWE Weakness Definitions
CWE-78: OS Command Injection

Attacker injects OS commands through application inputs passed to system() or equivalent calls, leading to arbitrary command execution.

Related Attack Patterns (CAPEC)
CAPEC-43 Exploiting Multiple Input Interpretation Layers
via CWE-78
CAPEC-108 Command Line Execution through SQL Injection
via CWE-78
CAPEC-6 Argument Injection
via CWE-78
CAPEC-15 Command Delimiters
via CWE-78
CAPEC-88 OS Command Injection
via CWE-78

Mapping is CWE-to-CAPEC per MITRE CAPEC 3.9.

◆ SAGE Intelligence — CITED Relevance Research Team

This vulnerability was disclosed in 1996. A critical vulnerability affects Apache systems (CVE-1999-0067). No public exploit code is currently available. Isolate affected systems if patching is not feasible.

BSID: BS-1996-GLOBAL-307607-C • Model: rule-based-v1 • Confidence: MEDIUM

Is this CVE in your environment?

BreachSpider monitors your ICS/OT environment for vulnerabilities like this one. No agents or network access required. Free to start.

Check My Environment →
Frequently Asked Questions
What is CVE-1999-0067?
This vulnerability was disclosed in 1996. A critical vulnerability affects Apache systems (CVE-1999-0067). No public exploit code is currently available. Isolate affected systems if patching is not feasible.
What is the CVSS score for CVE-1999-0067?
CVE-1999-0067 has CVSS 10.0 (Critical). Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C. EPSS: 86.9%.
Is CVE-1999-0067 actively exploited?
No confirmed active exploitation of CVE-1999-0067 as of 2026-06-20.
How do I remediate CVE-1999-0067?
Priority: MEDIUM.
What systems are affected by CVE-1999-0067?
CVE-1999-0067 affects: Apache, Ncsa.
Vulnerability Details
CVE IDCVE-1999-0067
BSIDBS-1996-GLOBAL-307607-C BreachSpider Global ID
CVSS VectorAV:N/AC:L/Au:N/C:C/I:C/A:C
Published1996-03-20
Last Modified2026-06-16
ICS Relevance15%
Weakness (CWE)
OS Command Injection
SourceNVD
Official Description

phf CGI program allows remote command execution through shell metacharacters.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

Vulnerability details: phf CGI program allows remote command execution through shell metacharacters. CVSS vector: AV:N/AC:L/Au:N/C:C/I:C/A:C.

Exploitation Likelihood: MEDIUM

Affected Products
VendorProductFixed Version
Apache Http Server —
Ncsa Ncsa Httpd —
Remediation

No patch URL on record. Monitor vendor security advisories directly.

Threat Intelligence
● Threat Intelligence Validated: July 2026 | Threat Age: 11084 Days
CISA KEVNot in KEV catalog
Public ExploitNot confirmed
PoC CodeNot confirmed
SAGE Enrichment Record — provenance & audit hash
Modelrule-based-v1
ConfidenceMEDIUM
Enriched At2026-05-24
SHA-512 Audit Hasha8af9591d98cdf3a8aa87963200efeabec95d62e28a0915cd8841f0f0e957502b6c3628d4270a2cbe4a155c6dbe80b940940d4b17c8764369d255413d67424d5
Related CVEs affecting Apache
CVE-1999-0926 10.0 Apache allows remote attackers to conduct a denial of service via a large num... CVE-1999-1293 10.0 mod_proxy in Apache 1.2.5 and earlier allows remote attackers to cause a deni... CVE-2010-0425 10.0 modules/arch/win32/mod_isapi.c in mod_isapi in the Apache HTTP Server 2.0.37 ... CVE-2003-0789 10.0 mod_cgid in Apache before 2.0.48, when using a threaded MPM, does not properl... CVE-2012-3506 10.0 Unspecified vulnerability in the Apache Open For Business Project (aka OFBiz)...
View all Apache CVEs →

Critical Severity - Know Your Exposure

A CVSS 10.0 vulnerability in your ICS environment cannot wait. BreachSpider maps critical CVEs to your specific assets and tells you what to fix first.

Check Your Assets Free →