CVE-2019-25239

V-SOL GPON/EPON OLT Platform 2.03 Unauthenticated Configuration Download

Published Dec 24, 2025 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Description

V-SOL GPON/EPON OLT Platform 2.03 contains an unauthenticated information disclosure vulnerability that allows attackers to download configuration files via direct object reference. Attackers can retrieve sensitive configuration data by sending HTTP GET requests to the usrcfg.conf endpoint, potentially enabling authentication bypass and system access.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Guangzhou V-SOLUTION Electronic Technology

GPON/EPON OLT Platform

affected

Version	Status	Constraints
`V2.03.62R_IPv6`	affected	—
`V2.03.54R`	affected	—
`V2.03.52R`	affected	—
`V2.03.49`	affected	—
`V2.03.47`	affected	—
`V2.03.40`	affected	—
`V2.03.26`	affected	—
`V2.03.24`	affected	—
`V1.8.6`	affected	—
`V1.4`	affected	—

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

No advisories available

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.399% probability within 30 days)

Exploitation poc

Automatable yes

Technical Impact partial

References

Link	Providers
https://www.exploit-db.com/exploits/47433
https://www.vsolcn.com
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2019-5534.php

History

Nov 9, 2026 8:30 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Dec 24, 2025 7:45 PM Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		V-SOL GPON/EPON OLT Platform 2.03 contains an unauthenticated information disclosure vulnerability that allows attackers to download configuration files via direct object reference. Attackers can retrieve sensitive configuration data by sending HTTP GET requests to the usrcfg.conf endpoint, potentially enabling authentication bypass and system access.
Title		V-SOL GPON/EPON OLT Platform 2.03 Unauthenticated Configuration Download
Weaknesses		CWE-552
References		https://www.exploit-db.com/exploits/47433 https://www.vsolcn.com https://www.zeroscience.mk/en/vulnerabilities/ZSL-2019-5534.php
Metrics		cvssV3_1 `{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}` cvssV4_0 `{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}`