Heap-Based Buffer Overflow Vulnerability in Open5GS Diameter S6a Interface
CVE-2024-14043

5.3MEDIUM

Key Information:

Vendor

Open5GS

Status
Open5gs
Vendor
CVE Published:
11 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2024-14043?

A vulnerability exists in Open5GS versions up to 2.7.1 affecting the Diameter S6a Interface. Specifically, the function mme_s6a_subscription_data_from_avp is susceptible to a heap-based buffer overflow due to improper argument manipulation of msisdn_len. This flaw can potentially be exploited remotely, allowing attackers to impact the system's integrity. The issue has been disclosed publicly, and users are advised to upgrade to version 2.7.2, which includes a fix for this vulnerability via patch 7ea82cb87bb65c3694d8d7c7a5efed1c4d3c9304.

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-2024-14043 - Proof of Concept

References

https://vuldb.com/vuln/387281
vdb-entrytechnical-description
https://vuldb.com/vuln/387281/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2024-14043
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
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)
.