VDB-338365 · CVE-2019-25237 · Exploit 47435

Guangzhou V-SOLUTION Electronic SOL GPON EPON OLT Platform 2.03 user_role_mod authorization

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.9	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical has been found in Guangzhou V-SOLUTION Electronic SOL GPON EPON OLT Platform 2.03. Impacted is the function user_role_mod. This manipulation causes authorization. This vulnerability is registered as CVE-2019-25237. Remote exploitation of the attack is possible. Furthermore, an exploit is available.

Detailsinfo

A vulnerability classified as critical was found in Guangzhou V-SOLUTION Electronic SOL GPON EPON OLT Platform 2.03. Affected by this vulnerability is the function user_role_mod. The manipulation with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is CWE-863. The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

V-SOL GPON/EPON OLT Platform v2.03 contains a privilege escalation vulnerability that allows normal users to gain administrative access by manipulating the user role parameter. Attackers can send a crafted HTTP POST request to the user management endpoint with 'user_role_mod' set to integer value '1' to elevate their privileges.

The weakness was published by Gjoko Krstic as 47435. The advisory is shared at exploit-db.com. This vulnerability is known as CVE-2019-25237 since 12/24/2025. The exploitation appears to be easy. The attack can be launched remotely. Technical details and also a public exploit are known.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Exploit-DB (47435) and EUVD (EUVD-2025-205323). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Guangzhou V-SOLUTION Electronic

Name

SOL GPON EPON OLT Platform

Version

2.03

CPE 2.3info

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CPE 2.2info

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CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 9.3
VulDB Meta Temp Score: 8.9

VulDB Base Score: 8.8
VulDB Temp Score: 8.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 9.8
CNA Vector (VulnCheck): 🔒

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Authorization
CWE: CWE-863 / CWE-285 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Exploit-DB: 🔒

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

12/24/2025 CVE reserved
12/24/2025 +0 days VulDB entry created
12/25/2025 +0 days Advisory disclosed
12/25/2025 +0 days VulDB entry last update

Sourcesinfo

Advisory: 47435
Researcher: Gjoko Krstic
Status: Not defined

CVE: CVE-2019-25237 (🔒)
GCVE (CVE): GCVE-0-2019-25237
GCVE (VulDB): GCVE-100-338365
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 12/25/2025 00:39
Updated: 12/25/2025 07:46
Changes: 12/25/2025 00:39 (79), 12/25/2025 07:46 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.