Vulnerability Report

CVE-2020-9276

Title: Dlink Dsl-2640B RCE

Memory Corruption

Proof Of Concept

No public PoC currently indexed for CVE-2020-9276.

CWE Category CWE-787
Published Date Apr 20, 2020
Modified Date Jun 17, 2026
Exploit Status Not Found
Score 8.8 CVSS v3.1
Exploit Probability (EPSS)
2.60%

Vulnerability Summary

CVE-2020-9276: An issue was discovered on D-Link DSL-2640B B2 EU_4.01B devices. The function do_cgi(), which processes cgi requests supplied to the device's web servers, is vulnerable to a remotely exploitable stack-based buffer overflow. Unauthenticated exploitation is possible by combining this vulnerability with CVE-2020-9277.

Impacted Vendors

D
dlink 1
D
d-link 1

Reference Links

https://raelize.com/advisories/CVE-2020-9276_D-Link-DSL-2640B_do_cgi-buffer-overflow_v1.0.txt https://raelize.com/posts/d-link-dsl-2640b-security-advisories/ https://www.dlink.com/en/security-bulletin https://raelize.com/advisories/CVE-2020-9276_D-Link-DSL-2640B_do_cgi-buffer-overflow_v1.0.txt https://raelize.com/posts/d-link-dsl-2640b-security-advisories/ https://www.dlink.com/en/security-bulletin
CVSS v3.1
Source Entity [email protected]
Severity HIGH
8.8
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0
Source Entity [email protected]
Severity HIGH
9.0
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:L/Au:S/C:C/I:C/A:C

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2020-9276 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Stack

No specific products linked.