CVE-2021-35977 Memory corruption in n/a

Critical 9.8 Published 8 Oct 2021 Updated 4 Aug 2024

A buffer overflow in Digi RealPort for Windows allows arbitrary code execution via crafted ADDP discovery response messages.

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

What is CVE-2021-35977?

CVE-2021-35977 is a critical memory corruption vulnerability in n/a, published on 8 Oct 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in Digi RealPort for Windows through 4.8.488.0. A buffer overflow exists in the handling of ADDP discovery response messages. This could result in arbitrary code execution.

Weakness: CWE-120

Which versions are affected by CVE-2021-35977?

It affects 18 products.

Products include Digi 6350-Sr Firmware, Digi Cm Firmware, Digi Connect Es Firmware, Digi Connectport Lts 8\/16\/32 Firmware, Digi Connectport Ts 8\/16 Firmware, Digi One Ia Firmware and 12 more.

How do I fix CVE-2021-35977?

No fix has been published for CVE-2021-35977 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-2021-35977 being exploited?

There is no known exploitation of CVE-2021-35977 in the wild and no public exploit code.

Sources

Also known as GHSA-g5mc-mhmx-jqjp.