Security readout for executives and security teams
Plain-English summary
CVE-2017-18823 is a NETGEAR fully managed switch security misconfiguration issue affecting listed M4300 and M4200 models running firmware before 12.0.2.15. The main business risk is disruption or unauthorized modification on affected switches, not data theft based on the CVSS vector.
Executive priority
Treat as a high-priority network infrastructure maintenance item. It is not reported as actively exploited here, but vulnerable switches can affect availability and integrity of dependent business services.
Technical view
The CVE describes incorrect security settings on specific NETGEAR M4300 and M4200 switch models before firmware 12.0.2.15. CVSS 3.0 is 7.7: local attack vector, low complexity, no privileges, no user interaction, no confidentiality impact, high integrity and availability impact.
Likely exposure
Exposure is limited to organizations operating the named NETGEAR M4300 or M4200 fully managed switches below 12.0.2.15. The CVSS local attack vector means risk is higher where local network or device access is plausible.
Exploitation context
The source bundle does not show CISA KEV listing or cited active exploitation. The public details are sparse, but the CVSS vector indicates a low-complexity local issue with high integrity and availability impact.
Researcher notes
The record does not provide a CWE or detailed root cause beyond security misconfiguration. Validation should focus on exact model and firmware matching, vendor advisory review, and confirming remediation state rather than exploit reproduction.
Mitigation direction
- Identify all NETGEAR M4300 and M4200 switches in inventory.
- Upgrade affected switches to firmware 12.0.2.15 or later where applicable.
- Review the NETGEAR advisory for model-specific guidance.
- Prioritize devices supporting critical network paths.
- Apply normal change control and backup configurations before updates.
Validation and detection
- Compare each switch model and firmware version against the affected list.
- Confirm upgraded devices report firmware 12.0.2.15 or later.
- Check whether any listed models remain below the fixed version.
- Review operational logs for unexpected switch configuration changes.
- Document any devices that cannot be updated immediately.
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
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CVE-2017-18823 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 7.7 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AC:L/AV:L/A:H/C:N/I:H/PR:N/S:U/UI: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:3.0/AC:L/AV:L/A:H/C:N/I:H/PR:N/S:U/UI:N2.55.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.7HighVector: CVSS:3.0/AC:L/AV:L/A:H/C:N/I:H/PR:N/S:U/UI:N
Source materials
- CVE List V5 sourceCVE List V5
- https://kb.netgear.com/000049042/Security-Advisory-for-Security-Misconfiguration-on-Some-Fully-Managed-Switches-PSV-2017-1943CVE 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.