CVE-2020-9277
CRITICALD-Link DSL-2640B B2 EU_4.01B - Unauthenticated Authentication Bypass via CGI Modules
Title source: llmDescription
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.
References (3)
Core 3
Core References
Vendor Advisory x_refsource_misc
https://www.dlink.com/en/security-bulletin
Exploit, Third Party Advisory x_refsource_misc
https://raelize.com/posts/d-link-dsl-2640b-security-advisories/
Third Party Advisory x_refsource_misc
https://raelize.com/advisories/CVE-2020-9277_D-Link-DSL-2640B_CGI-Authentication-bypass_v1.0.txt
Scores
CVSS v3
9.8
EPSS
0.0066
EPSS Percentile
71.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-287
Status
published
Products (1)
dlink/dsl-2640b_firmware
eu_4.01b
Published
Apr 20, 2020
Tracked Since
Feb 18, 2026