CVE-2021-43118
Last modified
CVE-2021-43118 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 34.84% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Draytek | Vigor2960 Firmware | 1.5.1.3 |
| Draytek | Vigor3900 Firmware | 1.5.1.3 |
| Draytek | Vigor300b Firmware | 1.5.1.3 |
References
- https://gist.github.com/Cossack9989/6034c077f46e4f06d0992e9f2fae7f26Exploit, Third Party Advisory
- https://gist.github.com/Cossack9989/6034c077f46e4f06d0992e9f2fae7f26Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-43118?
How severe is CVE-2021-43118?
How do I fix CVE-2021-43118?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2021
- CVE-2021-4311A vulnerability classified as problematic was found in Talen…9.8
- CVE-2021-43110An Access Conrol vulnerability exists in PuneethReddyHC onli…9.8
- CVE-2021-43113iTextPDF in iText 7 and up to (excluding 4.4.13.3) 7.1.17 al…9.8
- CVE-2021-43114FORT Validator versions prior to 1.5.2 will crash if an RPKI…7.5
- CVE-2021-43116An Access Control vulnerability exists in Nacos 2.0.3 in the…8.8
- CVE-2021-43117fastadmin v1.2.1 is affected by a file upload vulnerability …9.8
- CVE-2021-4312** UNSUPPORTED WHEN ASSIGNED ** A vulnerability classified a…6.1
- CVE-2021-43129A bypass exists for Desire2Learn/D2L Brightspace’s “Disable …6.5
- CVE-2021-4313A vulnerability was found in NethServer phonenehome. It has …9.8
- CVE-2021-43130An SQL Injection vulnerability exists in Sourcecodester Cust…9.8
- CVE-2021-43136An authentication bypass issue in FormaLMS <= 2.4.4 allows a…9.8
- CVE-2021-43137Cross-Site Scripting (XSS) and Cross-Site Request Forgery (C…8.8
Are you affected by CVE-2021-43118?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST