Security readout for executives and security teams
Plain-English summary
CVE-2017-18839 is a stored cross-site scripting issue in specific NETGEAR M4200 and M4300 fully managed switches running firmware before 12.0.2.15. Business risk is moderate: exploitation appears to require high privileges and user interaction, but affected switches can be operationally important network infrastructure.
Executive priority
Treat as scheduled remediation for network infrastructure, not an emergency response item, unless vulnerable switches are exposed to untrusted users or remain unmanaged. Prioritize inventory confirmation and firmware update planning.
Technical view
The provided CVSS 3.0 vector is AV:L/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L with score 5.2. The issue is stored XSS affecting listed NETGEAR M4200/M4300 models before 12.0.2.15. The bundle does not include CWE details, exploit proof, or technical injection specifics.
Likely exposure
Exposure is likely limited to organizations still operating the listed NETGEAR M4200 or M4300 switch models on firmware earlier than 12.0.2.15. Internet exposure is not established in the provided sources.
Exploitation context
The bundle does not support active exploitation claims. CISA KEV status is false, and no cited source says exploitation is occurring. CVSS indicates high privileges and user interaction are required.
Researcher notes
Evidence is limited to the CVE record and NETGEAR advisory reference. The source bundle identifies affected models and version threshold but does not provide exploit details, CWE mapping, vulnerable parameters, or indicators of compromise.
Mitigation direction
- Identify listed NETGEAR M4200 and M4300 switches in inventory.
- Upgrade affected firmware to 12.0.2.15 or later, following NETGEAR guidance.
- Review NETGEAR advisory PSV-2017-2004 for model-specific instructions.
- Limit switch management access to authorized administrators where operationally feasible.
Validation and detection
- Confirm each switch model against the affected product list.
- Record current firmware versions and compare them with 12.0.2.15.
- Check whether management interfaces are reachable beyond trusted admin paths.
- Review logs for unusual administrative changes where available.
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.
CVE-2017-18839 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
- 5.2 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AC:L/AV:L/A:L/C:L/I:L/PR:H/S:C/UI:R
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:3.0/AC:L/AV:L/A:L/C:L/I:L/PR:H/S:C/UI:R1.13.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
5.2MediumVector: CVSS:3.0/AC:L/AV:L/A:L/C:L/I:L/PR:H/S:C/UI:R
Source materials
- CVE List V5 sourceCVE List V5
- https://kb.netgear.com/000049023/Security-Advisory-for-Stored-Cross-Site-Scripting-on-Some-Fully-Managed-Switches-PSV-2017-2004CVE reference · x_refsource_CONFIRM
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.