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.
CVE-2025-56568
CVSS base score
7.5 (v3.1)
Severity
HIGH
Attack vector
Network
Weakness
CWE-617
Last modified
November 4, 2026
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H