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Vulnerable Software

Vulnerability Details CVE-2026-3040

A vulnerability was identified in DrayTek Vigor 300B up to 1.5.1.6. This affects the function cgiGetFile of the file /cgi-bin/mainfunction.cgi/uploadlangs of the component Web Management Interface. The manipulation of the argument File leads to os command injection. The attack may be initiated remotely. The exploit is publicly available and might be used. The vendor confirms that "300B is EoL, and this is an authenticated vulnerability. We don't plan to fix it." This vulnerability only affects products that are no longer supported by the maintainer.

Exploit prediction scoring system (EPSS) score

EPSS Score 0.003

EPSS Ranking 52.8%

CVSS Severity

CVSS v3 Score 4.7

CVSS v2 Score 5.8

References

Products affected by CVE-2026-3040

Draytek » Vigor300b » Version: N/A

cpe:2.3:h:draytek:vigor300b:-
Draytek » Vigor300b Firmware » Version: N/A

cpe:2.3:o:draytek:vigor300b_firmware:-
Draytek » Vigor300b Firmware » Version: 1.0.7

cpe:2.3:o:draytek:vigor300b_firmware:1.0.7
Draytek » Vigor300b Firmware » Version: 1.0.8

cpe:2.3:o:draytek:vigor300b_firmware:1.0.8
Draytek » Vigor300b Firmware » Version: 1.0.8.2

cpe:2.3:o:draytek:vigor300b_firmware:1.0.8.2
Draytek » Vigor300b Firmware » Version: 1.0.9

cpe:2.3:o:draytek:vigor300b_firmware:1.0.9
Draytek » Vigor300b Firmware » Version: 1.0.9.1

cpe:2.3:o:draytek:vigor300b_firmware:1.0.9.1
Draytek » Vigor300b Firmware » Version: 1.1.0

cpe:2.3:o:draytek:vigor300b_firmware:1.1.0
Draytek » Vigor300b Firmware » Version: 1.1.0.2

cpe:2.3:o:draytek:vigor300b_firmware:1.1.0.2
Draytek » Vigor300b Firmware » Version: 1.2.0

cpe:2.3:o:draytek:vigor300b_firmware:1.2.0
Draytek » Vigor300b Firmware » Version: 1.2.1

cpe:2.3:o:draytek:vigor300b_firmware:1.2.1
Draytek » Vigor300b Firmware » Version: 1.2.2

cpe:2.3:o:draytek:vigor300b_firmware:1.2.2
Draytek » Vigor300b Firmware » Version: 1.3.0

cpe:2.3:o:draytek:vigor300b_firmware:1.3.0
Draytek » Vigor300b Firmware » Version: 1.3.1

cpe:2.3:o:draytek:vigor300b_firmware:1.3.1
Draytek » Vigor300b Firmware » Version: 1.3.2

cpe:2.3:o:draytek:vigor300b_firmware:1.3.2
Draytek » Vigor300b Firmware » Version: 1.3.3

cpe:2.3:o:draytek:vigor300b_firmware:1.3.3
Draytek » Vigor300b Firmware » Version: 1.3.3.1

cpe:2.3:o:draytek:vigor300b_firmware:1.3.3.1
Draytek » Vigor300b Firmware » Version: 1.3.3.2

cpe:2.3:o:draytek:vigor300b_firmware:1.3.3.2
Draytek » Vigor300b Firmware » Version: 1.4.0

cpe:2.3:o:draytek:vigor300b_firmware:1.4.0
Draytek » Vigor300b Firmware » Version: 1.4.1

cpe:2.3:o:draytek:vigor300b_firmware:1.4.1
Draytek » Vigor300b Firmware » Version: 1.4.2.1

cpe:2.3:o:draytek:vigor300b_firmware:1.4.2.1
Draytek » Vigor300b Firmware » Version: 1.4.3

cpe:2.3:o:draytek:vigor300b_firmware:1.4.3
Draytek » Vigor300b Firmware » Version: 1.4.4

cpe:2.3:o:draytek:vigor300b_firmware:1.4.4
Draytek » Vigor300b Firmware » Version: 1.5.1

cpe:2.3:o:draytek:vigor300b_firmware:1.5.1
Draytek » Vigor300b Firmware » Version: 1.5.1.1

cpe:2.3:o:draytek:vigor300b_firmware:1.5.1.1
Draytek » Vigor300b Firmware » Version: 1.5.1.3

cpe:2.3:o:draytek:vigor300b_firmware:1.5.1.3
Draytek » Vigor300b Firmware » Version: 1.5.1.4

cpe:2.3:o:draytek:vigor300b_firmware:1.5.1.4
Draytek » Vigor300b Firmware » Version: 1.5.1.5

cpe:2.3:o:draytek:vigor300b_firmware:1.5.1.5
Draytek » Vigor300b Firmware » Version: 1.5.1.6

cpe:2.3:o:draytek:vigor300b_firmware:1.5.1.6

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-3040

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