CVSS 3.1
9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-2021-43118
Critical (9.8) in draytek. EPSS 35% chance of exploitation in the next 30 days.
A Remote Command Injection 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 via a crafted HTTP message containing malformed QUERY STRING in mainfunction.cgi, which could let a remote malicious user execute arbitrary code.
Severity
- EPSS
- 35% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-31)
- CWE
- CWE-77
- Published
- Modified
- Record from
- the NVD, synced
Affected
- draytek:vigor2960_firmware
- draytek:vigor300b_firmware
- draytek:vigor3900_firmware