CVSS 3.1
9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-2020-14993
Critical (9.8) in draytek. EPSS 5.5% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 5.5% chance of exploitation in the next 30 days; higher than 92% of CVEs (scores of 2026-10-31)
- CWE
- CWE-787
- Published
- Modified
- Record from
- the NVD, synced
Affected
- draytek:vigor2960_firmware
- draytek:vigor300b_firmware
- draytek:vigor3900_firmware
References
- https://github.com/dexterone/Vigor-poc
- https://www.draytek.com/about/security-advisory
- https://www.draytek.com/about/security-advisory/vigor3900-/-vigor2960-/-vigor300b-stack-based-buffer-overflow-vulnerability-%28cve-2020-14473%29
- https://github.com/dexterone/Vigor-poc
- https://www.draytek.com/about/security-advisory