Security readout for executives and security teams
Plain-English summary
This CVE covers a security misconfiguration in several older NETGEAR routers and gateways. An unauthenticated attacker on an adjacent network could potentially affect confidentiality, integrity, and availability at a limited level. Business urgency depends on whether these legacy devices still route traffic in offices, labs, or remote sites.
Executive priority
Prioritize verification where these devices protect business networks, guest Wi-Fi, remote offices, or sensitive lab environments. Remediation is important but not emergency-level based on the supplied evidence.
Technical view
CVE-2017-18740 has CVSS 3.0 score 6.3 with AV:A/AC:L/PR:N/UI:N and low C/I/A impact. The source identifies fixed firmware thresholds for multiple NETGEAR D, R, WNDR, and WNR models. No CWE is provided in the bundle.
Likely exposure
Exposure is most likely in environments still using the listed NETGEAR consumer or small-office routers and gateways below the named firmware versions. The CVSS adjacent-network vector suggests attackers need network proximity rather than general internet reachability.
Exploitation context
The provided bundle does not show CISA KEV inclusion or cite active exploitation. Treat this as a legacy device hygiene issue unless newer vendor, KEV, or incident evidence indicates exploitation.
Researcher notes
Affected firmware thresholds include D3600/D6000 before 1.0.0.61, D6100 before 1.0.0.55, D7800 before 1.0.1.28, R6100 before 1.0.1.16, R7500 before 1.0.0.112, R7500v2 before 1.0.3.20, R7800 before 1.0.2.36, R9000 before 1.0.2.40, and listed WNDR/WNR models below their fixed versions.
Mitigation direction
- Inventory NETGEAR routers and gateways by exact model and firmware version.
- Upgrade affected devices to firmware versions newer than the fixed thresholds.
- Review NETGEAR advisory guidance for model-specific firmware instructions.
- Retire devices that cannot be updated or supported by the vendor.
Validation and detection
- Compare device firmware against the fixed versions in the CVE description.
- Confirm each model appears, or does not appear, in the affected device list.
- Check NETGEAR support pages for current firmware availability.
- Track future KEV or vendor updates before changing exploitation status.
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-2017-18740 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
- 6.3 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AC:L/AV:A/A:L/C:L/I:L/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:L/C:L/I:L/PR:N/S:U/UI:N2.83.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
6.3MediumVector: CVSS:3.0/AC:L/AV:A/A:L/C:L/I:L/PR:N/S:U/UI:N
Source materials
- CVE List V5 sourceCVE List V5
- https://kb.netgear.com/000051515/Security-Advisory-for-Security-Misconfiguration-on-Some-Routers-and-Gateways-PSV-2017-0615CVE 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.