Denial of Service Vulnerability in Open5GS UDR by Open5GS
CVE-2026-7708

5.3MEDIUM

Key Information:

Vendor

Open5GS

Status
Open5gs
Vendor
CVE Published:
3 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7708?

A vulnerability exists in Open5GS up to version 2.7.7, specifically in the function ogs_dbi_subscription_data within the UDR component's library. This vulnerability allows for a remote denial of service attack by manipulating the 'supi_id' argument. Exploitation of this flaw can lead to service interruptions for users, making the system unavailable. Despite being reported to the Open5GS project, no official response has been issued regarding this issue, leaving users at potential risk.

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-2026-7708 - Proof of Concept

References

https://vuldb.com/vuln/360884
vdb-entrytechnical-description
https://vuldb.com/vuln/360884/cti
signaturepermissions-required
https://vuldb.com/submit/805701
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

FrankyLin (VulDB User)
VulDB CNA Team
.