Critical severity9.8NVD Advisory· Published Apr 20, 2020· Updated Jun 17, 2026

CVE-2020-9277

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Dlink/Dsl 2640b2 versions
cpe:2.3:o:dlink:dsl-2640b_firmware:eu_4.01b:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:dlink:dsl-2640b_firmware:eu_4.01b:*:*:*:*:*:*:*
- (no CPE)range: EU_4.01B
D-Link/DSL-2640B B2 EU_4.01Bdescription

Patches

Vulnerability mechanics

References

raelize.com/posts/d-link-dsl-2640b-security-advisories/nvdExploitThird Party Advisory
raelize.com/advisories/CVE-2020-9277_D-Link-DSL-2640B_CGI-Authentication-bypass_v1.0.txtnvdThird Party Advisory
www.dlink.com/en/security-bulletinnvdVendor Advisory

News mentions

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epss	0.002
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