Denial of Service Vulnerability in Open5GS AMF Component
CVE-2026-7587

5.3MEDIUM

Key Information:

Vendor

Open5GS

Status
Open5gs
Vendor
CVE Published:
1 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7587?

A vulnerability in the Open5GS AMF component, specifically in the function amf_nsmf_pdusession_handle_update_sm_context located in /src/amf/nsmf-handler.c, has been identified. This issue allows remote attackers to trigger a denial of service condition. The vulnerability affects all versions of Open5GS up to 2.7.7. Despite early notification to the project maintainers, no response has been recorded. The details of the exploit are now publicly available, increasing the risk of potential attacks.

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-2026-7587 - Proof of Concept

References

https://vuldb.com/vuln/360540
vdb-entrytechnical-description
https://vuldb.com/vuln/360540/cti
signaturepermissions-required
https://vuldb.com/submit/804339
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

ZiyuLin (VulDB User)
VulDB CNA Team
.