Privilege Escalation in V-SOL GPON/EPON OLT Platform
CVE-2019-25237

8.7HIGH

Key Information:

Vendor

Guangzhou V-solution Electronic Technology Co., Ltd.

Status
Sol Gpon/epon Olt Platform
Vendor
CVE Published:
24 December 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2019-25237?

The V-SOL GPON/EPON OLT Platform version 2.03 is affected by a privilege escalation vulnerability that allows regular users to gain administrative access. This is achieved through manipulation of the 'user_role_mod' parameter in HTTP POST requests sent to the user management endpoint, which can result in unauthorized privilege elevation. This vulnerability poses significant security risks as it could allow attackers to exploit user roles and potentially compromise the entire system.

Affected Version(s)

SOL GPON/EPON OLT Platform 2.03

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-2019-25237 - Proof of Concept

References

https://www.exploit-db.com/exploits/47435
exploit
https://www.vsolcn.com
product
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2019-55...
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
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

LiquidWorm as Gjoko Krstic of Zero Science Lab
JSON
.
CVE-2019-25237 : Privilege Escalation in V-SOL GPON/EPON OLT Platform