CVE-2025-56568
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductSMF (Session Management Function)
PublishedApr 30, 2026
First seenApr 30, 2026
Weakness typeCWE-617CWE-617
How to fix
Update
- Open5GS SMF (Session Management Function)2.7.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Open5GS SMF (Session Management Function) | No range specified | 2.7.5 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.