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
818 results · Clear filters · Feed
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Critical 9.0
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Critical 9.8
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Critical 9.6
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KEV Aug 7, 2026 -
Critical 9.6
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Critical 9.9
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Critical 10.0
Predator Connect W6x: RCE via MQTT
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Critical 9.8
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Critical 9.8
A command injection vulnerability exists in the Admin Access feature of InHand Networks IR302 firmware V3.5.108, IR305 …
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Critical 9.8
A command injection vulnerability exists in the WireGuard VPN feature of InHand Networks IR302 firmware V3.5.108, IR305…
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Critical 9.8
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Critical 9.8
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A vulnerability has been found in Totolink N300RH 6.1c.1353_B20190305. Affected is the function setPasswordCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Such manipulation of the argument admpass leads to os command injection.…
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Critical 9.8
Totolink A8000RU Web Management cstecgi.cgi setParentalRules os command injection
A weakness has been identified in Totolink A8000RU 7.1cu.643_b20200521. Impacted is the function setParentalRules of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Executing a manipulation of the argument enable can lead to os comman…
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Critical 9.8
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Critical 9.8
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Critical 9.8
Totolink A8000RU Web Management cstecgi.cgi setIpQosRules os command injection
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Critical 9.8
Totolink A8000RU Web Management cstecgi.cgi setWanCfg os command injection
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Critical 9.8
Totolink A8000RU Web Management cstecgi.cgi UploadFirmwareFile os command injection
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Critical 9.8
Totolink A8000RU Web Management cstecgi.cgi setOpenVpnCfg os command injection
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Critical 9.8
Totolink A8000RU Web Management cstecgi.cgi UploadOpenVpnCert os command injection
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Critical 9.8
Totolink A8000RU Web Management cstecgi.cgi setOpenVpnCertGenerationCfg os command injection
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Critical 9.8
Totolink A8000RU Web Management cstecgi.cgi setL2tpServerCfg os command injection
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Critical 9.8
Totolink A8000RU Web Management cstecgi.cgi setQosCfg os command injection
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Critical 9.8
Totolink A8000RU Web Management cstecgi.cgi setWiFiWpsCfg os command injection
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Critical 9.8
Totolink A8000RU Web Management cstecgi.cgi setMacFilterRules os command injection
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Critical 9.8
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Critical 9.8
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Critical 9.8
Totolink A8000RU Web Management cstecgi.cgi setFirewallType os command injection
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Critical 9.8
Totolink A8000RU Web Management cstecgi.cgi setRemoteCfg os command injection
A weakness has been identified in Totolink A8000RU 7.1cu.643_b20200521. Affected is the function setRemoteCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Executing a manipulation of the argument enable can lead to os command in…
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Critical 9.8
Totolink A8000RU Web Management cstecgi.cgi setGameSpeedCfg os command injection
A security flaw has been discovered in Totolink A8000RU 7.1cu.643_b20200521. This impacts the function setGameSpeedCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Performing a manipulation of the argument enable results in os c…
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Critical 9.8
Totolink A8000RU Web Management cstecgi.cgi setDdnsCfg os command injection
A vulnerability was identified in Totolink A8000RU 7.1cu.643_b20200521. This affects the function setDdnsCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Such manipulation of the argument provider leads to os command injection. …
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Critical 9.8
Totolink A8000RU Web Management cstecgi.cgi setScheduleCfg os command injection
A weakness has been identified in Totolink A8000RU 7.1cu.643_b20200521. The impacted element is the function setScheduleCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Executing a manipulation of the argument mode can lead to o…
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Critical 9.8
Totolink A8000RU Web Management cstecgi.cgi setUpgradeFW os command injection
A security flaw has been discovered in Totolink A8000RU 7.1cu.643_b20200521. The affected element is the function setUpgradeFW of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Performing a manipulation of the argument resetFlags res…
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Critical 9.8
Totolink A8000RU Web Management cstecgi.cgi setLanguageCfg os command injection
A vulnerability was identified in Totolink A8000RU 7.1cu.643_b20200521. Impacted is the function setLanguageCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Such manipulation of the argument lang leads to os command injection. T…
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Critical 9.8
Totolink A8000RU Web Management cstecgi.cgi setTracerouteCfg os command injection
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Critical 9.8
Totolink A8000RU Web Management cstecgi.cgi setDiagnosisCfg os command injection
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Critical 9.3
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