CVE-2020-14993
Critical
Description
A stack-based buffer overflow on DrayTek Vigor2960, Vigor3900, and Vigor300B devices before 1.5.1.1 allows remote attackers to execute arbitrary code via the formuserphonenumber parameter in an authusersms action to mainfunction.cgi.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Draytek Vigor300b Firmware
PublishedJun 23, 2020
First seenJun 23, 2020
How to fix
Update
- draytek vigor300b_firmware1.5.1.1 or later
- draytek vigor2960_firmware1.5.1.1 or later
- draytek vigor3900_firmware1.5.1.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| draytek vigor300b_firmware | v < 1.5.1.1 | 1.5.1.1 |
| draytek vigor2960_firmware | v < 1.5.1.1 | 1.5.1.1 |
| draytek vigor3900_firmware | v < 1.5.1.1 | 1.5.1.1 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
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