Security readout for executives and security teams
Plain-English summary
CVE-2017-18838 is a privilege escalation issue in specified NETGEAR fully managed switches. A user with low privileges and local access could potentially gain higher privileges, risking confidentiality, integrity, and availability. The listed fixed firmware threshold is 12.0.2.15.
Executive priority
Treat this as a high-priority infrastructure hygiene issue, especially for switches supporting production networks. Urgency is lower than an internet-remote exploited bug, but stale firmware and broad local access can turn this into a serious operational risk.
Technical view
The CVE is scored CVSS 3.0 7.8 high with AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Sources identify affected NETGEAR M4300 and M4200 switch models running firmware before 12.0.2.15. CWE and root-cause details are not provided in the bundle.
Likely exposure
Exposure is most likely where listed NETGEAR M4300 or M4200 switches remain on firmware older than 12.0.2.15 and local low-privileged access exists.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. The CVSS vector indicates exploitation requires local access and low privileges, with no user interaction.
Researcher notes
Evidence is limited to the CVE record and NETGEAR advisory reference. The bundle names models and fixed firmware threshold but does not provide CWE, detailed root cause, proof-of-concept status, or active exploitation evidence.
Mitigation direction
- Inventory NETGEAR M4300 and M4200 switches in managed environments.
- Upgrade affected listed models to firmware 12.0.2.15 or later per NETGEAR guidance.
- Restrict local and management-plane access to trusted administrators only.
- Review low-privileged switch accounts and remove unnecessary access.
- Monitor NETGEAR advisory updates for model-specific instructions.
Validation and detection
- Confirm each switch model matches the affected M4300 or M4200 list.
- Check installed firmware versions against the 12.0.2.15 fixed threshold.
- Verify management access is limited to authorized administrative paths.
- Review account lists for low-privileged users with unnecessary local access.
- Document remediation status for each affected switch asset.
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.
Privilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2017-18838 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
- High
- CVSS
- 7.8 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AC:L/AV:L/A:H/C:H/I:H/PR:L/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:H/I:H/PR:L/S:U/UI:N1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.8HighVector: CVSS:3.0/AC:L/AV:L/A:H/C:H/I:H/PR:L/S:U/UI:N
Source materials
- CVE List V5 sourceCVE List V5
- https://kb.netgear.com/000049024/Security-Advisory-for-Vertical-Privilege-Escalation-on-Some-Fully-Managed-Switches-PSV-2017-1975CVE 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.