CVE-2021-45856 Memory corruption in n/a

High 7.5 Published Updated

A remote buffer overflow in the Accu-Time Systems MAXIMUS telnet service allows attackers to crash the service, causing denial of service.

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-2021-45856?

CVE-2021-45856 is a high-severity memory corruption vulnerability in n/a, published on 9 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Accu-Time Systems MAXIMUS 1.0 telnet service suffers from a remote buffer overflow which causes the telnet service to crash

Weakness: CWE-120

Which versions are affected by CVE-2021-45856?

It affects 1 product.

Products include Accu-Time Maximus Firmware.

How do I fix CVE-2021-45856?

No fix has been published for CVE-2021-45856 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-2021-45856 being exploited?

There is no known exploitation of CVE-2021-45856 in the wild and no public exploit code.

Sources

Also known as GHSA-5gp4-fwp2-wg66.

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