Security readout for executives and security teams
Plain-English summary
This CVE affects specific NETGEAR routers and extenders with older firmware. An unauthenticated attacker on an adjacent network could inject commands into the device, potentially taking control or disrupting availability. Business risk is highest where these devices sit on office, branch, guest, or unmanaged network edges.
Executive priority
Treat this as a high-priority network-device remediation issue, especially for branch or small-office environments. Prioritize finding listed models and upgrading firmware before broader vulnerability cleanup work.
Technical view
CVE-2017-18735 is a pre-authentication command injection issue in listed NETGEAR JR6150, PR2000, R6050, R6700v2, R6800, and R6900v2 firmware versions. The CVSS 3.0 score is 8.8 with adjacent-network attack vector, low complexity, no privileges, no user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to organizations using the named NETGEAR models with firmware older than the fixed versions. The source bundle does not prove internet-wide exposure, exploitation in the wild, or impact on other NETGEAR products.
Exploitation context
The source bundle marks CISA KEV status as false and provides no cited evidence of active exploitation. The vulnerability remains serious because it is unauthenticated, low-complexity, and can affect core network devices if reachable from an attacker-controlled adjacent network.
Researcher notes
The CVE record’s structured affected field is not product-normalized, but the description names exact models and version thresholds. No CWE, exploit details, or active exploitation evidence are provided in the source bundle.
Mitigation direction
- Upgrade affected NETGEAR devices to the fixed firmware versions or later.
- Use NETGEAR advisory PSV-2017-2143 as the authoritative remediation source.
- Remove unsupported or unpatchable affected devices from production networks.
- Limit affected devices’ reachability from guest, untrusted, and shared network segments.
Validation and detection
- Inventory NETGEAR JR6150, PR2000, R6050, R6700v2, R6800, and R6900v2 devices.
- Compare firmware against the vulnerable version thresholds listed in the CVE description.
- Confirm firmware updates completed successfully on each affected device.
- Document any remaining affected devices and compensating network restrictions.
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.
Execution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2017-18735 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/000051520/Security-Advisory-for-Pre-Authentication-Command-Injection-on-Some-Routers-and-Extenders-PSV-2017-2143CVE 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.