Null Pointer Dereference in Open5GS PGW S5U Address Handler
CVE-2026-2062

6.9MEDIUM

Key Information:

Vendor

Open5GS

Status
Open5gs
Vendor
CVE Published:
6 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-2062?

A vulnerability identified in the Open5GS PGW S5U Address Handler can lead to a null pointer dereference through the functions sgwc_s5c_handle_modify_bearer_response and sgwc_sxa_handle_session_modification_response. This issue can be exploited remotely, potentially allowing attackers to cause a denial of service. Publicly available exploits highlight the urgency of addressing this vulnerability. Users are strongly advised to apply the available patch (identifier: f1bbd7b57f831e2a070780a7d8d5d4c73babdb59) to safeguard their systems.

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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-2026-2062 - Proof of Concept

References

https://vuldb.com/?id.344622
vdb-entrytechnical-description
https://vuldb.com/?ctiid.344622
signaturepermissions-required
https://vuldb.com/?submit.744719
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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