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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.

PUBLISHED Reserved 2025-12-24 | Published 2025-12-24 | Updated 2025-12-24 | Assigner VulnCheck




HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Problem types

Files or Directories Accessible to External Parties

Product status

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

Credits

LiquidWorm as Gjoko Krstic of Zero Science Lab finder

References

www.zeroscience.mk/en/vulnerabilities/ZSL-2019-5534.php exploit

www.exploit-db.com/exploits/47433 exploit

www.exploit-db.com/exploits/47433 (ExploitDB-47433) exploit

www.vsolcn.com (V-SOL Official Product Homepage) product

www.zeroscience.mk/en/vulnerabilities/ZSL-2019-5534.php (Zero Science Lab Disclosure (ZSL-2019-5534)) third-party-advisory

cve.org (CVE-2019-25239)

nvd.nist.gov (CVE-2019-25239)

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Data based on CVE®. Copyright © 1999-2025, The MITRE Corporation. All rights reserved.