Security readout for executives and security teams
Plain-English summary
This is a stored cross-site scripting issue in certain NETGEAR M4200 and M4300 fully managed switches. An attacker with high privileges could store script content that later runs when another user views the affected interface. Business urgency is moderate because exposure appears limited to switch administration contexts, but compromise of network management sessions can still matter.
Executive priority
Treat this as a scheduled remediation item, not an emergency, unless affected switches manage sensitive network segments or have broad administrator access. The main business risk is abuse of management interfaces and administrator sessions.
Technical view
CVE-2017-18827 affects listed NETGEAR M4200/M4300 switch models before firmware 12.0.2.15. The CVSS 3.0 score is 5.2, with local attack vector, low complexity, high privileges required, user interaction required, changed scope, and low confidentiality, integrity, and availability impact.
Likely exposure
Organizations using the named NETGEAR M4200 or M4300 fully managed switches with firmware earlier than 12.0.2.15 are the likely exposure group. The source bundle does not identify other products, CPEs, or cloud services as affected.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. The CVSS vector indicates exploitation requires high privileges and user interaction, which reduces broad external risk but does not remove risk inside network administration workflows.
Researcher notes
Evidence is limited to the CVE record, CVE JSON, and NETGEAR advisory reference. The affected list is explicit, but the bundle does not provide exploit details, vulnerable parameters, or independent exploitation reports.
Mitigation direction
- Inventory NETGEAR M4200 and listed M4300 switches.
- Compare installed firmware against version 12.0.2.15.
- Follow the NETGEAR advisory for firmware update guidance.
- Prioritize devices used for sensitive network administration.
- Restrict management access to trusted administrators and networks.
Validation and detection
- Confirm each switch model is in the affected NETGEAR list.
- Record current firmware version for every in-scope device.
- Verify updated devices report firmware 12.0.2.15 or later.
- Review administrative access paths to switch management interfaces.
- Check security monitoring for unusual switch administration activity.
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-2017-18827 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/000049038/Security-Advisory-for-Stored-Cross-Site-Scripting-on-Some-Fully-Managed-Switches-PSV-2017-1939CVE 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.