CVE-2020-9276 Memory corruption in n/a

High 8.8 Published 20 Apr 2020 Updated 4 Aug 2024

A stack-based buffer overflow in the web server allows remote attackers to execute arbitrary code on D-Link DSL-2640B routers.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-9276?

CVE-2020-9276 is a high-severity memory corruption vulnerability in n/a, published on 20 Apr 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official 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.

Weakness: CWE-787

Which versions are affected by CVE-2020-9276?

It affects 1 product.

Products include Dlink Dsl-2640b Firmware.

How do I fix CVE-2020-9276?

No fix has been published for CVE-2020-9276 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2020-9276 being exploited?

There is no known exploitation of CVE-2020-9276 in the wild and no public exploit code.

Sources

Also known as GHSA-hfjp-mm4w-hgxg.