CVE-2020-9277
CVSS v3
9.8
CRITICAL
EPSS Score
2.5 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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.
Technical details
- Published
- 2020-04-20
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.
Is CVE-2020-9277 actively exploited?
Active exploitation of CVE-2020-9277 has not been confirmed. Its EPSS score was 2.5% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2020-9277?
CVE-2020-9277 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2020-9277 affecting your environment?
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