Denial of Service Vulnerability in Open5GS by Open5GS
CVE-2026-8223

6.9MEDIUM

Key Information:

Vendor

Open5GS

Status
Open5gs
Vendor
CVE Published:
10 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-8223?

A vulnerability exists in the Open5GS software, specifically within the sm-policies Endpoint's function called pcf_sess_sbi_discover_and_send. This issue enables an attacker to perform manipulations that can lead to a denial of service condition. The attack can be executed remotely, making it a concern for users of Open5GS versions up to 2.7.7. Although the vulnerability has been reported, responses from the project regarding resolution have not been made public as of yet. With the exploit already available, the risk to systems running this software is significant.

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-2026-8223 - Proof of Concept

References

https://vuldb.com/vuln/362440
vdb-entrytechnical-description
https://vuldb.com/vuln/362440/cti
signaturepermissions-required
https://vuldb.com/submit/808442
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

LinZiyu (VulDB User)
VulDB CNA Team
.