Weakness (CWE)
CWE-77: Command Injection
The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.
More detail
Many protocols and products have their own custom command language. While OS or shell command strings are frequently discovered and targeted, developers may not realize that these other command languages might also be vulnerable to attacks.
How to prevent it (5 mitigations)
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Architecture and Design
If at all possible, use library calls rather than external processes to recreate the desired functionality.
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Implementation
If possible, ensure that all external commands called from the program are statically created.
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Implementation
Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
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Operation
Run time: Run time policy enforcement may be used in an allowlist fashion to prevent use of any non-sanctioned commands.
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System Configuration
Assign permissions that prevent the user from accessing/opening privileged files.
Source: MITRE CWE-77
29 results · Clear filters · Feed
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Critical 9.8
FreeSWITCH: Inbound SIP MESSAGE can select the api chat proto and run FreeSWITCH API commands
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High 8.7
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Critical 10.0
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KEV Sep 29, 2025 -
Critical 9.8
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KEV Dec 19, 2024 -
Critical 9.8
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Critical 9.8
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KEV Sep 18, 2024 -
Critical 10.0
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KEV Apr 12, 2024 -
High 7.3
D-Link DNS-320L/DNS-325/DNS-327L/DNS-340L HTTP GET Request nas_sharing.cgi command injection
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KEV Apr 11, 2024 -
Critical 9.1
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KEV Jan 10, 2024 -
Critical 9.8
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High 8.8
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Critical 9.8
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KEV Nov 16, 2023 -
High 8.8
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KEV May 1, 2023 -
Critical 9.8
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KEV Jan 8, 2024 -
Critical 9.8
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KEV Apr 11, 2022 -
High 8.8
Remote code execution (RCE) in Apache Airflow
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KEV Jan 18, 2022 -
High 8.8
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KEV Nov 3, 2021 -
High 8.8
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KEV Nov 3, 2021 -
Critical 9.8
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Critical 9.8
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KEV Jul 7, 2025 -
High 7.8
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KEV May 24, 2022 -
High 8.1
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High 8.8
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KEV Feb 10, 2022 -
Critical 9.8
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KEV Mar 25, 2022 -
High 7.8
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Critical 9.8
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KEV Apr 15, 2022 -
Critical 9.8
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KEV Mar 25, 2022