Memory Corruption Vulnerability in Open5GS MME Component
CVE-2026-2522

6.9MEDIUM

Key Information:

Vendor

Open5GS

Status
Open5gs
Vendor
CVE Published:
15 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-2522?

A security vulnerability has been identified in Open5GS versions up to 2.7.6, specifically in the MME component's esm-build.c file. This vulnerability is triggered by an unknown function that can be exploited to cause memory corruption. Attackers may exploit this vulnerability remotely, posing a significant risk to systems running affected versions. Although the issue was reported to the project team, there has been no official response, allowing the exploit details to circulate publicly.

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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-2026-2522 - Proof of Concept

References

https://vuldb.com/?id.346110
vdb-entrytechnical-description
https://vuldb.com/?ctiid.346110
signaturepermissions-required
https://vuldb.com/?submit.738336
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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