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CVE-2024-12987: DrayTek Vigor Routers OS Command Injection Vulnerability

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2025-05-15
• EPSS: 98.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2024-12-27 · updated 2026-06-17
• Weakness: CWE-77

Description

A vulnerability, which was classified as critical, was found in DrayTek Vigor2960 and Vigor300B 1.5.1.4. Affected is an unknown function of the file /cgi-bin/mainfunction.cgi/apmcfgupload of the component Web Management Interface. The manipulation of the argument session leads to os command injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 1.5.1.5 is able to address this issue. It is recommended to upgrade the affected component.

Affected products

• DrayTek Vigor2960: 1.5.1.4
• DrayTek Vigor 300B: 1.5.1.4

References

• https://netsecfish.notion.site/Command-Injection-in-apmcfgupload-endpoint-for-DrayTek-Gateway-Devices-1676b683e67c8040b7f1f0ffe29ce18f?pvs=4
• https://vuldb.com/?ctiid.289380
• https://vuldb.com/?id.289380
• https://vuldb.com/?submit.468795
• https://fw.draytek.com.tw/Vigor2960/Firmware/v1.5.1.5/DrayTek_Vigor2960_V1.5.1.5_01release-note.pdf
• https://fw.draytek.com.tw/Vigor300B/Firmware/v1.5.1.5/DrayTek_Vigor300B_V1.5.1.5_01release-note.pdf
• https://fw.draytek.com.tw/Vigor3900/Firmware/v1.5.1.5/DrayTek_Vigor3900_V1.5.1.5_01release-note.pdf
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-12987

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