Security readout for executives and security teams
Plain-English summary
CVE-2019-25238 affects V-SOL GPON/EPON OLT Platform 2.03. If an authenticated administrator is tricked into opening a malicious page, the device may accept unwanted administrative changes, such as user creation, SSH enablement, or settings changes. This is most relevant to organizations operating V-SOL OLT management interfaces.
Executive priority
Treat as a moderate priority for telecom and network operations teams. The main business risk is unauthorized OLT management change after administrator social engineering. Prioritize if devices are internet-exposed or administrators browse from privileged sessions.
Technical view
The issue is cross-site request forgery in V-SOL GPON/EPON OLT Platform 2.03, mapped to CWE-352. The published CVSS v4.0 score is 5.1. The attacker does not need device credentials, but exploitation requires administrator interaction while authenticated to the management interface.
Likely exposure
Exposure is likely limited to environments running V-SOL GPON/EPON OLT Platform 2.03 where administrators access the web management interface. Risk increases if the interface is reachable from general user networks or the internet.
Exploitation context
A public ExploitDB reference and Zero Science Lab disclosure exist. The source bundle does not indicate CISA KEV listing or confirmed active exploitation. Exploitation depends on tricking an authenticated administrator into loading attacker-controlled content.
Researcher notes
Public sources describe CSRF enabling administrative state changes, but the bundle does not name a vendor patch. Do not assume affected versions beyond 2.03. Validate exposure by product/version and management-plane reachability, then consult vendor guidance.
Mitigation direction
- Check V-SOL guidance for firmware updates or replacement recommendations.
- Restrict OLT management interfaces to trusted admin networks only.
- Require VPN or equivalent controls for remote administration.
- Avoid using privileged admin sessions for general web browsing.
- Review administrative accounts, SSH status, and device configuration regularly.
Validation and detection
- Inventory V-SOL OLT devices and confirm platform version 2.03 exposure.
- Verify management UI is not internet-accessible.
- Review logs for unexpected admin creation, SSH enablement, or settings changes.
- Confirm whether vendor firmware guidance addresses this CVE.
- Test administrative workflows for CSRF protections in a controlled lab only.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-352: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2019-25238 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.1 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
5.1MediumVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-47434CVE reference · exploit
- V-SOL Product HomepageCVE reference · product
- Zero Science Lab Disclosure (ZSL-2019-5536)CVE reference · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Cross-Site Request Forgery (CSRF)
Cross-Site Request Forgery (CSRF) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.