critical9.8
CVE-2021-42911
A Format String vulnerability exists in DrayTek Vigor 2960 <= 1.5.1.3, DrayTek Vigor 3900 <= 1.5.1.3, and DrayTek Vigor 300B <= 1.5.1.3 in the mainfunction.cgi…
Impact
A Format String vulnerability exists in DrayTek Vigor 2960 <= 1.5.1.3, DrayTek Vigor 3900 <= 1.5.1.3, and DrayTek Vigor 300B <= 1.5.1.3 in the mainfunction.cgi file via a crafted HTTP message containing malformed QUERY STRING, which could let a remote malicious user execute arbitrary code.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Draytek | Vigor2960 Firmware | through 1.5.1.3 |
| Draytek | Vigor3900 Firmware | through 1.5.1.3 |
| Draytek | Vigor300b Firmware | through 1.5.1.3 |