CVE-2021-43118

critical · 9.8

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.

9.8

CVSS

34.8%

EPSS (exploit prob.)

98th

EPSS percentile

2022-03-29

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-77

Affected products

Vendor	Product	Affected versions
draytek	vigor2960_firmware	1.5.1.3
draytek	vigor2960	all versions
draytek	vigor3900_firmware	1.5.1.3
draytek	vigor3900	all versions
draytek	vigor300b_firmware	1.5.1.3
draytek	vigor300b	all versions

Check a specific version with /api/v1/cve/match.

References

https://gist.github.com/Cossack9989/6034c077f46e4f06d0992e9f2fae7f26
https://gist.github.com/Cossack9989/6034c077f46e4f06d0992e9f2fae7f26

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2021-43118