Denial of Service Vulnerability in Open5GS by Open5GS
CVE-2026-8288

5.3MEDIUM

Key Information:

Vendor

Open5GS

Status
Open5gs
Vendor
CVE Published:
11 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-8288?

A denial of service vulnerability has been identified in Open5GS software up to version 2.7.7. Specifically, the issue resides in the function gsm_handle_pdu_session_modification_qos_flow_descriptions located in the file src/smf/gsm-handler.c. By manipulating the argument n1SmMsg, an attacker can trigger this vulnerability, potentially leading to service disruption. This attack can be executed remotely, making it critical for users to monitor and secure their systems against potential exploitation. A patch to address this issue is currently pending acceptance.

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-2026-8288 - Proof of Concept

References

https://vuldb.com/vuln/362585
vdb-entrytechnical-description
https://vuldb.com/vuln/362585/cti
signaturepermissions-required
https://vuldb.com/submit/808489
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
.