CVE-2020-37136 ZOC Terminal v7.25.5 - 'Private key file' Denial of Service
Attackers can crash ZOC Terminal by providing an oversized buffer in the private key file input field, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-37136?
CVE-2020-37136 is a medium-severity memory corruption vulnerability in EmTec ZOC Terminal, published on 5 Feb 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
ZOC Terminal 7.25.5 contains a denial of service vulnerability in the private key file input field that allows attackers to crash the application. Attackers can overwrite the private key file input with a 2000-byte buffer, causing the application to become unresponsive when attempting to create SSH key files.
Weakness: CWE-121
Which versions are affected by CVE-2020-37136?
How do I fix CVE-2020-37136?
No fix has been published for CVE-2020-37136 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-2020-37136 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-37136 exists.
Sources
Also known as GHSA-j4pp-wppf-qq42.