Denial of Service Vulnerability in Open5GS SGWC Component
CVE-2026-1586

6.9MEDIUM

Key Information:

Vendor

Open5GS

Status
Open5gs
Vendor
CVE Published:
29 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-1586?

A vulnerability has been identified in Open5GS, specifically within the SGWC component. The flaw occurs in the function ogs_gtp2_f_teid_to_ip located in /sgwc/s11-handler.c. This issue allows remote attackers to conduct a denial of service attack by manipulating the function, leading to potential service disruptions. It is crucial for users operating versions up to 2.7.5 to implement the available patch, as the issue has been flagged as resolved in later versions.

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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-2026-1586 - Proof of Concept

References

https://vuldb.com/?id.343349
vdb-entrytechnical-description
https://vuldb.com/?ctiid.343349
signaturepermissions-required
https://vuldb.com/?submit.738375
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

FrankyLin (VulDB User)
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