Denial of Service Vulnerability in Open5GS SMF
CVE-2026-8270

5.3MEDIUM

Key Information:

Vendor

Open5GS

Status
Open5gs
Vendor
CVE Published:
11 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-8270?

A vulnerability exists in Open5GS up to version 2.7.7 within the SMF component's ogs_nas_parse_qos_rules function. An attacker can remotely exploit this flaw through crafted inputs, resulting in denial of service. The issue has been publicly disclosed, highlighting significant risks for users and service providers. Despite an early notification to the developers, there has been no formal response or mitigation released.

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-2026-8270 - Proof of Concept

References

https://vuldb.com/vuln/362567
vdb-entrytechnical-description
https://vuldb.com/vuln/362567/cti
signaturepermissions-required
https://vuldb.com/submit/808488
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
.