Denial of Service Vulnerability in Open5GS by Open5GS
CVE-2026-1587

6.9MEDIUM

Key Information:

Vendor

Open5GS

Status
Open5gs
Vendor
CVE Published:
29 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-1587?

A vulnerability has been identified in Open5GS that affects the SGWC component. Specifically, it resides in the function 'sgwc_s11_handle_modify_bearer_request' located in the file '/sgwc/s11-handler.c'. This flaw can be exploited to induce a denial of service, allowing a remote attacker to disrupt service availability. The vulnerability has been publicly disclosed. It is strongly advised to apply the available patch to rectify this security issue as it has been flagged as already resolved.

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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-2026-1587 - Proof of Concept

References

https://vuldb.com/?id.343350
vdb-entrytechnical-description
https://vuldb.com/?ctiid.343350
signaturepermissions-required
https://vuldb.com/?submit.738376
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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