CVE-2025-70122
HIGHfree5gc v4.0.1 - Denial of Service via PFCP Session Modification Request
Title source: llmDescription
A heap buffer overflow vulnerability in the UPF component of free5GC v4.0.1 allows remote attackers to cause a denial of service via a crafted PFCP Session Modification Request. The issue occurs in the SDFFilterFields.UnmarshalBinary function (sdf-filter.go) when processing a declared length that exceeds the actual buffer capacity, leading to a runtime panic and UPF crash.
References (1)
Core 1
Core References
Issue Tracking
https://github.com/free5gc/free5gc/issues/746
Scores
CVSS v3
7.5
EPSS
0.0034
EPSS Percentile
25.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-122
Status
published
Products (1)
free5gc/free5gc
4.0.1
Published
Feb 13, 2026
Tracked Since
Feb 18, 2026