Security readout for executives and security teams
Plain-English summary
Some older NETGEAR routers and extenders shipped with insecure security settings. An attacker on an adjacent network could potentially compromise confidentiality, integrity, and availability if a listed device runs vulnerable firmware. The public sources name affected models and fixed firmware thresholds, but do not describe exploitation details.
Executive priority
Treat this as a high-priority network hygiene issue for legacy NETGEAR equipment. It is not KEV-listed in the provided data, but the potential impact is high and remediation is straightforward if firmware updates are available.
Technical view
CVE-2017-18748 is a high-severity security misconfiguration issue in specified NETGEAR EX6200v2, R6100, R7500, R7500v2, R7800, R9000, WNDR4300v2, and WNDR4500v3 firmware versions. CVSS 3.0 is 8.8 with adjacent-network attack vector, low complexity, no privileges, no user interaction, and high CIA impact.
Likely exposure
Exposure is most likely in environments still operating the listed NETGEAR routers or extenders below the named firmware versions. The CVSS vector indicates adjacent-network reachability, so local network or Wi-Fi proximity matters more than broad internet exposure based on the provided evidence.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. Public details are limited to security misconfiguration, affected models, vulnerable firmware thresholds, and severity metadata. Do not assume weaponized exploitation from these sources alone.
Researcher notes
The affected CPE data in the bundle is generic, so rely on the description and NETGEAR advisory for model and firmware scoping. The CVSS adjacent-network vector is important for exposure analysis. Public evidence here is insufficient to describe root cause mechanics or exploitation path.
Mitigation direction
- Inventory NETGEAR routers and extenders for the listed affected models.
- Upgrade affected devices to the fixed firmware versions or later.
- Use NETGEAR advisory guidance for model-specific update instructions.
- Retire devices that cannot be updated to a non-vulnerable firmware.
- Restrict device administration to trusted local networks where supported.
Validation and detection
- Confirm each device model exactly matches or differs from the affected list.
- Record current firmware versions from device administration or asset management.
- Compare firmware against the vulnerable-before thresholds in the advisory.
- Document upgraded firmware versions and dates after remediation.
- Check whether any affected device remains in production after patching.
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-2017-18748 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/000051506/Security-Advisory-for-Security-Misconfiguration-on-Some-Routers-and-Extenders-PSV-2016-0104CVE 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.