CVE-2025-56568 Denial of service in n/a
Remote attackers can cause denial of service in Open5GS SMF by sending crafted NGAP messages with malformed length fields.
- 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-2025-56568?
CVE-2025-56568 is a high-severity denial of service vulnerability in n/a, published on 30 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Assertion failure vulnerability in the PCO (Protocol Configuration Options) parser in the SMF (Session Management Function) component of Open5GS before v2.7.5 allows remote attackers to cause denial of service via specially crafted NGAP messages containing malformed length fields in protocol configuration data.
Weakness: CWE-617
Which versions are affected by CVE-2025-56568?
How do I fix CVE-2025-56568?
No fix has been published for CVE-2025-56568 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-2025-56568 being exploited?
There is no known exploitation of CVE-2025-56568 in the wild and no public exploit code.
Sources
Also known as GHSA-66c2-wgqr-4j3m.