Denial of Service Vulnerability in Open5GS by Open5GS
CVE-2026-7536

6.9MEDIUM

Key Information:

Vendor

Open5GS

Status
Open5gs
Vendor
CVE Published:
1 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7536?

A denial of service vulnerability exists in the Open5GS software, specifically within the BSF component's bsf_sess_add_by_ip_address function. This flaw, which affects versions up to 2.7.7, allows an attacker to manipulate the ipv4Addr argument, leading to potential disruptions in service. The exploit can be executed remotely, and its disclosure has raised concerns among users. Despite early notification of the problem through official channels, the Open5GS project has yet to address this vulnerability.

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-2026-7536 - Proof of Concept

References

https://vuldb.com/vuln/360353
vdb-entrytechnical-description
https://vuldb.com/vuln/360353/cti
signaturepermissions-required
https://vuldb.com/submit/804292
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)
VulDB CNA Team
.