CVE-2020-37182 Redir 3.3 - Denial of Service
Attackers can crash the Redir TCP redirector service by sending oversized input that triggers a stack overflow in the connection handler.
- 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-2020-37182?
CVE-2020-37182 is a high-severity memory corruption vulnerability in troglobit Redir, published on 11 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Redir 3.3 contains a stack overflow vulnerability in the doproxyconnect() function that allows attackers to crash the application by sending oversized input. Attackers can exploit the sprintf() buffer without proper length checking to overwrite memory and cause a segmentation fault, resulting in program termination.
Weakness: CWE-121
Which versions are affected by CVE-2020-37182?
How do I fix CVE-2020-37182?
No fix has been published for CVE-2020-37182 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-2020-37182 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-37182 exists.
Sources
Also known as DEBIAN-CVE-2020-37182, GHSA-64v7-64h5-r58h, UBUNTU-CVE-2020-37182.