Security readout for executives and security teams
Plain-English summary
CVE-2018-21125 is an authentication bypass in NETGEAR WAC510 access points running firmware before 5.0.0.17. An attacker on an adjacent network could potentially access functions without valid credentials, creating high confidentiality, integrity, and availability risk.
Executive priority
Treat this as a high-priority network device hygiene issue. Compromise of an access point can affect business connectivity, monitoring visibility, and trust in the local network, even without confirmed active exploitation.
Technical view
The CVE describes an authentication bypass affecting NETGEAR WAC510 devices before firmware 5.0.0.17. CVSS 3.0 score is 8.8, with adjacent-network attack vector, low complexity, no privileges, no user interaction, and high impact to confidentiality, integrity, and availability.
Likely exposure
Exposure is most likely where NETGEAR WAC510 devices run firmware below 5.0.0.17 and their management or device interfaces are reachable from local or adjacent networks.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. The CVSS vector indicates unauthenticated, low-complexity exploitation from an adjacent network, but public exploit status is not established here.
Researcher notes
The provided record lacks CWE detail, CPE entries, and advisory text beyond the referenced NETGEAR notice. Analysis should stay limited to WAC510 before 5.0.0.17 unless additional vendor data confirms broader impact.
Mitigation direction
- Identify all NETGEAR WAC510 access points in the environment.
- Upgrade affected WAC510 firmware to 5.0.0.17 or later.
- Review the NETGEAR advisory for vendor-specific instructions.
- Restrict management access to trusted administrative networks.
- Monitor access point logs for unexpected administrative activity.
Validation and detection
- Confirm each WAC510 firmware version is 5.0.0.17 or later.
- Verify management interfaces are not reachable from untrusted networks.
- Check asset inventory for unmanaged or forgotten WAC510 devices.
- Review logs for suspicious authentication or configuration events.
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.
Credential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2018-21125 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
- 8.8 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AC:L/AV:A/A:H/C:H/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:A/A:H/C:H/I:H/PR:N/S:U/UI:N2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
8.8HighVector: CVSS:3.0/AC:L/AV:A/A:H/C:H/I:H/PR:N/S:U/UI:N
Source materials
- CVE List V5 sourceCVE List V5
- https://kb.netgear.com/000060233/Security-Advisory-for-an-Authentication-Bypass-on-WAC510-PSV-2018-0261CVE 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.