Security readout for executives and security teams
Plain-English summary
This CVE affects several NETGEAR fully managed switch models and can cause denial of service. The business risk is service disruption, not data theft or tampering, based on the provided CVSS impact. It matters most where affected switches support critical network segments and still run firmware older than 12.0.2.15.
Executive priority
Schedule remediation through normal network maintenance unless affected switches support critical operations. Escalate priority if legacy firmware remains on switches carrying sensitive, production, or availability-critical traffic.
Technical view
CVE-2017-18836 is a local, unauthenticated denial-of-service issue affecting listed NETGEAR M4300 and M4200 switches before firmware 12.0.2.15. CVSS 3.0 is 6.2 with high availability impact and no confidentiality or integrity impact. The public bundle does not provide root-cause details or a CWE.
Likely exposure
Exposure is limited to organizations running the named NETGEAR M4300 or M4200 fully managed switches on firmware before 12.0.2.15. The CVSS vector indicates local attack vector, no privileges, and no user interaction.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. Treat this as a disruption risk requiring inventory validation and firmware remediation, especially for switches in production network paths.
Researcher notes
Available public detail is sparse: affected models, fixed-version boundary, CVSS vector, and denial-of-service impact are provided, but not root cause, CWE, or exploit mechanics. Avoid assuming remote reachability or broader product impact beyond the named models.
Mitigation direction
- Identify all NETGEAR M4300 and M4200 switches in production and lab networks.
- Upgrade affected devices to firmware 12.0.2.15 or later where vendor guidance supports it.
- Review the NETGEAR advisory before scheduling changes or applying firmware.
- Prioritize switches supporting critical network segments or shared operational environments.
- Maintain current backups of switch configuration before firmware maintenance.
Validation and detection
- Compare switch model and firmware versions against the affected list.
- Confirm each listed device is running 12.0.2.15 or later after remediation.
- Check change records for any deferred switch firmware updates.
- Monitor affected network segments for unexplained switch availability events.
- Document any devices that cannot be updated and track vendor guidance.
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-2017-18836 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
- 6.2 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AC:L/AV:L/A:H/C:N/I:N/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:N/PR:N/S:U/UI:N2.53.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
6.2MediumVector: CVSS:3.0/AC:L/AV:L/A:H/C:N/I:N/PR:N/S:U/UI:N
Source materials
- CVE List V5 sourceCVE List V5
- https://kb.netgear.com/000049026/Security-Advisory-for-Denial-of-Service-on-Some-Fully-Managed-Switches-PSV-2017-1959CVE 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.