An improper input validation and protocol compliance vulnerability in free5GC v4.0.1 allows remote attackers to cause a denial of service. The UPF incorrectly accepts a malformed PFCP Association Setup Request, violating 3GPP TS 29.244. This places the UPF in an inconsistent state where a subsequent valid PFCP Session Establishment Request triggers a cascading failure, disrupting the SMF connection and causing service degradation.
{
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/70xxx/CVE-2025-70123.json",
"cna_assigner": "mitre"
}