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Vulnerability record · CVE-2019-25237 · published 24 December 2025

CVE-2019-25237: Incorrect authorization vulnerability

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.

8.7 CVSS 4.0 High EPSS 0.36% · top 73.2% CWE-863 · Incorrect authorization Deferred
8.7CVSS 4.0 base score
0.36%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://www.exploit-db.com/exploits/47435
https://www.vsolcn.com
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2019-5538.php
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2019-5538.php

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Source: NIST National Vulnerability Database (record CVE-2019-25237), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.