Denial of Service Vulnerability in Open5GS SMF by Open5GS
CVE-2026-8290

5.3MEDIUM

Key Information:

Vendor

Open5GS

Status
Open5gs
Vendor
CVE Published:
11 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-8290?

A security flaw has been identified in the Open5GS SMF component, specifically in the smf_nsmf_handle_update_data_in_vsmf function within /src/smf/nsmf-handler.c. This vulnerability allows for remote exploitation, potentially leading to a denial of service condition. Attackers can leverage this issue to disrupt service availability, posing a risk to organizations relying on this software. Despite awareness of the problem communicated through an issue report, no corrective measures have been announced by the project team.

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-2026-8290 - Proof of Concept

References

https://vuldb.com/vuln/362587
vdb-entrytechnical-description
https://vuldb.com/vuln/362587/cti
signaturepermissions-required
https://vuldb.com/submit/808507
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

LinJu (VulDB User)
VulDB CNA Team
.