CVE-2026-54798 Denial of service in CPCI85 Central Processing/Communication
An authenticated attacker can crash the web process via a debugging interface, causing denial of service in Siemens industrial systems.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-54798?
CVE-2026-54798 is a high-severity denial of service vulnerability in Siemens CPCI85 Central Processing/Communication, published on 9 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability has been identified in CPCI85 Central Processing/Communication (All versions < V26.20), SICORE Base system (All versions < V26.20.0). The affected application includes a debugging interface that is accessible through HTTP endpoints. This could allow an authenticated attacker to disrupt the system by crashing the web process causing denial of service conditions.
Weakness: CWE-489
Which versions are affected by CVE-2026-54798?
How do I fix CVE-2026-54798?
No fix has been published for CVE-2026-54798 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-2026-54798 being exploited?
There is no known exploitation of CVE-2026-54798 in the wild and no public exploit code.
Sources
Also known as GHSA-jw99-297g-63f5.