CVE-2020-15415 DrayTek Multiple Vigor Routers: command or code injection
In plain words: The program treats text it receives as instructions instead of plain data. The attacker can run commands on the machine — often the whole device is taken over.
Confirmed exploited by CISA on · US federal patch deadline Oct 21, 2024
What to do
- Install DrayTek's security update for Multiple Vigor Routers. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Turn on automatic firmware updates and replace gear the maker no longer supports.
- Change default passwords and switch off remote administration and features you do not use.
- Do not put storage boxes or cameras directly on the internet — use the maker's app or a VPN.
Who is affected
Could reach you. This one is aimed at devices or apps of the kind people own.
What's at risk: Taken over in bulk to join botnets, used to watch your traffic, or — for storage boxes — locked by ransomware.
The details
- Official name
- DrayTek Multiple Vigor Routers OS Command Injection Vulnerability
- Product
- DrayTek Multiple Vigor Routers
- CISA description
- DrayTek Vigor3900, Vigor2960, and Vigor300B devices contain an OS command injection vulnerability in cgi-bin/mainfunction.cgi/cvmcfgupload that allows for remote code execution via shell metacharacters in a filename when the text/x-python-script content type is used.
- Type of flaw
- Command or code injection (CWE-78)
- Confirmed exploited
- Sep 30, 2024
- US federal patch deadline
- Oct 21, 2024
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Answering about CVE-2020-15415 ·
Questions about CVE-2020-15415
Is CVE-2020-15415 being exploited?
Yes. CISA added CVE-2020-15415 to its Known Exploited Vulnerabilities catalog on Sep 30, 2024, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2020-15415?
Install DrayTek's security update for Multiple Vigor Routers. If no update exists, follow the vendor's workaround or stop using the product until one ships. Turn on automatic firmware updates and replace gear the maker no longer supports.
Am I affected by CVE-2020-15415?
Only if you use DrayTek Multiple Vigor Routers. This one is aimed at devices or apps of the kind people own.