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CVE-2026-3040

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CVE-2026-3040

Published: Feb 23, 2026

Modified: Feb 25, 2026

PUBLISHED

CVSS v3.1

4.7

MEDIUM

Description

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.

VendorProductVersions

DrayTek

Vigor 300B

affected
1.5.1.0
affected
1.5.1.1
affected
1.5.1.2
affected
1.5.1.3
affected
1.5.1.4

+2 more versions

Weaknesses (CWE)

CWE-78
CWE-77

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

References

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