Remote Assertion Vulnerability in Open5GS CER Handler
CVE-2025-15684

6.9MEDIUM

Key Information:

Vendor

Open5GS

Status
Open5gs
Vendor
CVE Published:
12 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-15684?

A notable vulnerability has been identified in Open5GS versions up to 2.7.6, specifically within the CER Handler's diam_log_func function. This flaw permits remote attackers to manipulate the assertion logic, potentially leading to service disruptions. The exploit is now publicly available, making it critical for users to act swiftly. Users are strongly encouraged to upgrade to version 2.7.7, which includes a patch addressing this security issue. The patch is detailed in commit c1a803516a3c0485696cb9bcca7a80ad857c7383, ensuring enhanced protection against potential threats.

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-2025-15684 - Proof of Concept

References

https://vuldb.com/vuln/387277
vdb-entrytechnical-description
https://vuldb.com/vuln/387277/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2025-15684
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

WeiYi (VulDB User)
.