Denial of Service Vulnerability in Open5GS SMF by Open5GS
CVE-2026-8250

5.3MEDIUM

Key Information:

Vendor

Open5GS

Status
Open5gs
Vendor
CVE Published:
10 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-8250?

A denial of service vulnerability has been identified in Open5GS versions up to 2.7.7, specifically affecting the SMF component. The issue arises from a flaw in the function smf_n4_build_qos_flow_to_modify_list located in the /src/smf/n4-build.c file. This vulnerability allows remote attackers to manipulate the function, potentially leading to a denial of service. The vulnerability has been disclosed publicly, and although the project has been informed of the issue, there has been no official response as of now.

Affected Version(s)

Open5GS 2.7.0

Open5GS 2.7.1

Open5GS 2.7.2

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-2026-8250 - Proof of Concept

References

https://vuldb.com/vuln/362547
vdb-entrytechnical-description
https://vuldb.com/vuln/362547/cti
signaturepermissions-required
https://vuldb.com/submit/808476
third-party-advisory

CVSS V4

Score:
5.3
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

FrankLin (VulDB User)
VulDB CNA Team
.