Denial of Service Vulnerability in Free5GC PFCP UDP Endpoint
CVE-2026-2525

6.9MEDIUM

Key Information:

Vendor

Free5GC

Status
Free5gc
Vendor
CVE Published:
16 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-2525?

A denial of service vulnerability has been identified in Free5GC, affecting versions up to 4.1.0. This issue arises from an unknown function within the PFCP UDP Endpoint component, which can be exploited by an attacker remotely. When successfully manipulated, this vulnerability leads to disruptive service outages for the affected systems. Publicly available information about this exploit raises concerns regarding potential widespread attacks, emphasizing the need for immediate attention and mitigation strategies.

Affected Version(s)

Free5GC 4.0

Free5GC 4.1.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-2525 - Proof of Concept

References

https://vuldb.com/?id.346113
vdb-entrytechnical-description
https://vuldb.com/?ctiid.346113
signaturepermissions-required
https://vuldb.com/?submit.739509
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

ZiyuLin (VulDB User)
.