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CVE-2020-9276

HIGH
8.8
CVSS Score
Published: April 20, 2020 at 10:40 PM UTC
Updated: June 17, 2026 at 03:27 AM UTC
2 products affected across 1 vendorDsl 2640B FirmwareDSL-2640B

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Severity
HIGH8.8
Exploit prediction
EPSS 3%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Dsl 2640B Firmware· D-Link
95%
eu_4.01b
dlink-dsl-2640b (same device)
DSL-2640B· D-Linkdevice
80%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

x_refsource_MISCThird Party Advisory
Source: [email protected]
https://raelize.com/advisories/CVE-2020-9276_D-Link-DSL-2640B_do_cgi-buffer-overflow_v1.0.txt
x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://raelize.com/posts/d-link-dsl-2640b-security-advisories/
x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.dlink.com/en/security-bulletin

CVSS

8.8HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-787

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