CVE-2020-37085 VirtualTablet Server 3.0.2 - Denial of Service (PoC)
Attackers can crash the VirtualTablet Server by sending oversized string payloads via the Thrift protocol, causing a 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-2020-37085?
CVE-2020-37085 is a high-severity denial of service vulnerability in SunnySideSoft VirtualTablet Server, published on 3 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
VirtualTablet Server 3.0.2 contains a denial of service vulnerability that allows attackers to crash the service by sending oversized string payloads through the Thrift protocol. Attackers can exploit the vulnerability by sending a long string to the send_say() method, causing the server to become unresponsive.
Weakness: CWE-770
Which versions are affected by CVE-2020-37085?
How do I fix CVE-2020-37085?
No fix has been published for CVE-2020-37085 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2020-37085 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-37085 exists.
Sources
Also known as GHSA-qwxg-wwj2-f994.