CVE-2024-43027

Severity: high (CVSS 8.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2024-08-21 · updated 2026-06-17
Weakness: CWE-77

Description

DrayTek Vigor 3900 before v1.5.1.5_Beta, DrayTek Vigor 2960 before v1.5.1.5_Beta and DrayTek Vigor 300B before v1.5.1.5_Beta were discovered to contain a command injection vulnerability via the action parameter at cgi-bin/mainfunction.cgi.

Affected products

DrayTek Vigor2960: before 1.5.1.5 — fixed in 1.5.1.5
DrayTek Vigor 300B: before 1.5.1.5 — fixed in 1.5.1.5
DrayTek Vigor3900 Firmware: before 1.5.1.5 — fixed in 1.5.1.5

How to fix

Upgrade to a fixed version: DrayTek Vigor2960 1.5.1.5; DrayTek Vigor 300B 1.5.1.5; DrayTek Vigor3900 Firmware 1.5.1.5. Check the vendor advisory for mitigations.

References

https://github.com/N1nEmAn/wp/blob/main/V3900.md

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