CVE-2020-9277
CRITICALCVSS 9.8/10EPSS 2.46%
Last modified
CVE-2020-9277 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. An issue was discovered on D-Link DSL-2640B B2 EU_4.01B devices. Authentication can be bypassed when accessing cgi modules. EPSS estimates a 2.46% chance of exploitation in the next 30 days.
Description
An issue was discovered on D-Link DSL-2640B B2 EU_4.01B devices. Authentication can be bypassed when accessing cgi modules. This allows one to perform administrative tasks (e.g., modify the admin password) with no authentication.
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 |
|---|---|---|
| Dlink | Dsl-2640b Firmware | eu_4.01b |
References
- https://raelize.com/posts/d-link-dsl-2640b-security-advisories/Exploit, Third Party Advisory
- https://www.dlink.com/en/security-bulletinVendor Advisory
- https://raelize.com/posts/d-link-dsl-2640b-security-advisories/Exploit, Third Party Advisory
- https://www.dlink.com/en/security-bulletinVendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-9277?
An issue was discovered on D-Link DSL-2640B B2 EU_4.01B devices. Authentication can be bypassed when accessing cgi modules. This allows one to perform administrative tasks (e.g., modify the admin password) with no authentication.
How severe is CVE-2020-9277?
CVE-2020-9277 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.46% probability of exploitation in the next 30 days.
How do I fix CVE-2020-9277?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
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.
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Are you affected by CVE-2020-9277?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST