CVE-1999-0935

CRITICAL ⚠ Exploit

classifieds.cgi allows remote attackers to execute arbitrary commands by specifying them in a hidden variable in a CGI form.

Affects 0 products across 1 vendor.

CVSS 2.010.0
EPSS9.8%
Percentile96th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity.
◆ AI Analysis — automated analysis, not human-reviewed

A critical vulnerability in classifieds.cgi allows remote attackers to execute arbitrary commands on the server by manipulating a hidden variable in a CGI form.

BSID: BS-1999-GLOBAL-308153-C • Model: /workspace/models/qwen2.5-coder-32b-instruct-bf16 • Confidence: HIGH

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-1999-0935?
A critical vulnerability in classifieds.cgi allows remote attackers to execute arbitrary commands on the server by manipulating a hidden variable in a CGI form.
What is the CVSS score for CVE-1999-0935?
CVE-1999-0935 has CVSS 10.0 (Critical). Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C. EPSS: 9.8%.
Is CVE-1999-0935 actively exploited?
Public exploit available for CVE-1999-0935. Exploitation risk elevated.
How do I remediate CVE-1999-0935?
Priority: IMMEDIATE.
What systems are affected by CVE-1999-0935?
CVE-1999-0935 affects Form.
Vulnerability Details
CVE IDCVE-1999-0935
BSIDBS-1999-GLOBAL-308153-C BreachSpider Global ID
CVSS VectorAV:N/AC:L/Au:N/C:C/I:C/A:C
Published1999-12-15
Last Modified2026-06-16
ICS Relevance0%
SourceNVD
Official Description

classifieds.cgi allows remote attackers to execute arbitrary commands by specifying them in a hidden variable in a CGI form.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

The attack vector involves sending a specially crafted request to the classifieds.cgi script, where an attacker can inject malicious commands into a hidden form field. This can lead to full control over the server.

Exploitation Likelihood: CRITICAL

Affected Products
VendorProductAffected Versions
Form — —
Remediation

No official vendor advisory link on record. See the CVE record →

Threat Intelligence
● Threat Intelligence Validated: October 2026 | Threat Age: 9809 Days
CISA known-exploitedNot in KEV catalog
Public Exploit⚠ Available — Reference
PoC CodeNot confirmed
AI Enrichment Record — provenance & audit hash
Model/workspace/models/qwen2.5-coder-32b-instruct-bf16
ConfidenceHIGH
Enriched At2026-05-24
Related CVEs affecting Form
CVE-2024-50484 10.0 Unrestricted Upload of File with Dangerous Type vulnerability in Lindeni Mahl... CVE-2025-53283 10.0 Unrestricted Upload of File with Dangerous Type vulnerability in borisolhor D... CVE-1999-0937 10.0 BNBForm allows remote attackers to read arbitrary files via the automessage h... CVE-2025-68271 10.0 OpenC3 COSMOS provides the functionality needed to send commands to and recei... CVE-2026-34234 10.0 CtrlPanel is open-source billing software for hosting providers. In versions ...
View all Form 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.

Create a free account →