Security readout for executives and security teams
Plain-English summary
CVE-2018-21124 is a high-severity privilege escalation issue in NETGEAR WAC510 wireless access points running firmware before 5.0.0.17. A successful attacker could gain elevated control over the device, creating risk to network confidentiality, integrity, and availability.
Executive priority
Treat this as a priority network-device remediation item. Wireless access points can sit near sensitive traffic paths, and compromise could affect network trust. Prioritize sites still running WAC510 firmware below 5.0.0.17.
Technical view
The public record describes vertical privilege escalation 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, unchanged scope, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is likely limited to organizations running NETGEAR WAC510 access points below firmware 5.0.0.17. The CVSS vector indicates adjacent-network reachability, not necessarily internet exposure. The sources do not specify the vulnerable interface or required configuration.
Exploitation context
The provided sources do not show CISA KEV listing or public evidence of active exploitation. Risk remains material because the CVSS vector indicates low-complexity exploitation without prior privileges or user interaction from an adjacent network position.
Researcher notes
Public detail is sparse: the bundle names the product, affected version threshold, and privilege escalation class, but not root cause, endpoint, authentication boundary, or proof of exploitation. Avoid assuming exploit mechanics beyond the CVSS attributes and NETGEAR advisory title.
Mitigation direction
- Identify all NETGEAR WAC510 devices in managed and remote sites.
- Upgrade WAC510 firmware to 5.0.0.17 or later per NETGEAR guidance.
- Restrict management access to trusted administrative networks only.
- Review NETGEAR advisory guidance before changing production devices.
Validation and detection
- Confirm each WAC510 firmware version is 5.0.0.17 or later.
- Check asset inventory for unmanaged or forgotten WAC510 access points.
- Verify access point management interfaces are not broadly reachable.
- Review logs for unexpected administrative changes or device reconfiguration.
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-2018-21124 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/000060234/Security-Advisory-for-a-Vertical-Privilege-Escalation-on-WAC510-PSV-2018-0260CVE 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.