Critical severity · published Dec 24, 2025
CVE-2019-25237
V-SOL GPON/EPON OLT Platform 2.03 Privilege Escalation via User Role Parameter
9.8
CVSS
0.4%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 29% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SG
SOL GPON/EPON OLT Platform · Guangzhou V-SOLUTION Electronic Technology Co., Ltd.
2.03 · source: vendor
Affected product
SG
SOL GPON/EPON OLT Platform
Guangzhou V-SOLUTION Electronic Technology Co., Ltd.
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-25237
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-25237
www.exploit-db.com
https://www.exploit-db.com/exploits/47435
www.vsolcn.com
https://www.vsolcn.com
www.zeroscience.mk
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2019-5538.php
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V-SOL GPON/EPON OLT Platform 2.03 Cross-Site Request Forgery Vulnerability