CVE-2025-64388 Denial of service through specific packets
Attackers can cause a denial of service on the Circutor TCPRS1plus web server by sending specific malicious requests.
- 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-2025-64388?
CVE-2025-64388 is a critical denial of service vulnerability in Circutor TCPRS1plus, published on 31 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Denial of service of the web server through specific requests to this protocol
Weakness: CWE-400
Which versions are affected by CVE-2025-64388?
How do I fix CVE-2025-64388?
No fix has been published for CVE-2025-64388 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-2025-64388 being exploited?
There is no known exploitation of CVE-2025-64388 in the wild and no public exploit code.
Sources
Also known as GHSA-2cfx-ppj7-2856.