Denial of Service Vulnerability in Open5GS by Open5GS
CVE-2026-2523

6.9MEDIUM

Key Information:

Vendor

Open5GS

Status
Open5gs
Vendor
CVE Published:
16 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-2523?

A vulnerability affecting Open5GS versions up to 2.7.6 has been identified, specifically within the smf_gn_handle_create_pdp_context_request function located in src/smf/gn-handler.c. This vulnerability may allow an attacker to exploit reachable assertions, potentially leading to a Denial of Service situation. The attack can be initiated remotely, and the exploit has been publicly disclosed. Despite prior notification to the project regarding this issue, there has yet to be any official response from the developers.

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-2026-2523 - Proof of Concept

References

https://vuldb.com/?id.346111
vdb-entrytechnical-description
https://vuldb.com/?ctiid.346111
signaturepermissions-required
https://vuldb.com/?submit.738342
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

LinZiyu (VulDB User)
.