Security readout for executives and security teams
Plain-English summary
This is a security misconfiguration in several older NETGEAR router models. An attacker on an adjacent network could cause limited confidentiality and integrity impact, but exploitation requires high complexity. Business urgency is moderate: identify affected routers and upgrade firmware, especially in branch, lab, or remote-office environments where legacy consumer routers may remain unmanaged.
Executive priority
Treat this as a moderate-priority hygiene item, not an emergency based on the provided evidence. Prioritize sites with legacy NETGEAR routers exposed to guest Wi-Fi, shared offices, labs, or unmanaged remote locations.
Technical view
CVE-2017-18757 affects listed NETGEAR router firmware versions before the vendor-stated fixed releases. The CVSS 3.0 vector is AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N, meaning adjacent-network access, high attack complexity, no privileges, no user interaction, changed scope, and low confidentiality and integrity impact.
Likely exposure
Exposure is limited to environments using the named NETGEAR models below fixed firmware: D7800, R6100, R7500, R7500v2, R7800, R9000, WNDR4300v1/v2, and WNDR4500v3. The provided sources do not identify affected CPEs or broader product families.
Exploitation context
The source bundle does not report active exploitation, and the CVE is not listed as KEV. The attack vector is adjacent network, not internet-wide by the CVSS vector. Practical risk depends on whether vulnerable routers are present and reachable from untrusted local or wireless networks.
Researcher notes
The public record provides affected model/version data and CVSS scoring, but little technical detail about the misconfiguration. No CWE is supplied. Avoid assuming exploitability beyond adjacent-network, high-complexity conditions unless the NETGEAR advisory or later evidence adds detail.
Mitigation direction
- Upgrade affected NETGEAR models to the fixed firmware versions or later.
- Check the NETGEAR advisory for model-specific firmware guidance.
- Remove or replace unsupported legacy routers if fixed firmware is unavailable.
- Restrict untrusted access to local and wireless networks around affected routers.
Validation and detection
- Inventory NETGEAR router models and current firmware versions.
- Compare firmware against the fixed versions listed in the CVE description.
- Check network placement for adjacent access from guest or untrusted segments.
- Document exceptions where devices cannot be upgraded or replaced.
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-2017-18757 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
- 4.7 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AC:H/AV:A/A:N/C:L/I:L/PR:N/S:C/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:H/AV:A/A:N/C:L/I:L/PR:N/S:C/UI:N1.62.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
4.7MediumVector: CVSS:3.0/AC:H/AV:A/A:N/C:L/I:L/PR:N/S:C/UI:N
Source materials
- CVE List V5 sourceCVE List V5
- https://kb.netgear.com/000051491/Security-Advisory-for-Security-Misconfiguration-on-Some-Routers-PSV-2016-0120CVE 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.