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Weakness

Command Shell in Externally Accessible Directory

CWE-553 · Variant · Incomplete

A possible shell file exists in /cgi-bin/ or other accessible directories. This is extremely dangerous and can be used by an attacker to execute commands on the web server.

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Weakness Relationships

Where this weakness sits in the CWE hierarchy. Walk up to broader classes or down to more specific variants.
Parent of this (broader)
ChildOfCWE-552 · Files or Directories Accessible to External Parties
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Attack Patterns (CAPEC)

1
How adversaries exploit this weakness, per MITRE CAPEC.
CAPEC-650Upload a Web Shell to a Web Server
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CVEs With This Weakness

1
CVEs tagged with this weakness.
CVECVE-2025-66620
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Nuclei Scanner Templates

1
Open-source Nuclei templates that detect this weakness class - an actionable scan-for-it pivot. Licensed under the ProjectDiscovery / Nuclei terms.
criticalAntSword Backdoor Detection
External lookups - second-class, for what we don’t hold ourselves
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