Auth bypass in Guangzhou V-Solution Electronic Technology Co., Ltd. Sol Gpon/epon Olt Platform
CVE-2019-25237
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.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (27.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 27.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/47435 (exploit)
- www.vsolcn.com (product)
- www.zeroscience.mk/en/vulnerabilities/ZSL-2019-5538.php (third-party-advisory)
Frequently asked questions
- What is CVE-2019-25237?
- CVE-2019-25237 is a critical-severity vulnerability in Guangzhou V-Solution Electronic Technology Co., Ltd. Sol Gpon/epon Olt Platform, classified under Incorrect Authorization. CVSS score: 9.8/10. Published 2025-12-24.
- How severe is CVE-2019-25237?
- Critical severity. CVSS v3 base score is 9.8 out of 10.