Security readout for executives and security teams
Plain-English summary
This CVE is a command injection issue in specific NETGEAR router and modem-router firmware. A successful attacker could make the device run unintended commands, but the published CVSS vector requires local access and high privileges. Treat it as a targeted infrastructure hygiene issue, not an internet-wide emergency based on the provided sources.
Executive priority
Prioritize remediation where these devices support business connectivity or remote sites. The urgency is moderate because impact can be severe after compromise, but the provided evidence indicates local access and high privileges are required.
Technical view
CVE-2017-18841 affects NETGEAR R6220 before 1.1.0.46, R6700v2 before 1.1.0.38, R6800 before 1.1.0.38, WNDR3700v5 before 1.1.0.46, and D7000 before 1.0.1.50. CVSS 3.0 is 6.7 with AV:L/AC:L/PR:H/UI:N/S:U and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to environments still using the named NETGEAR models on firmware older than the listed fixed versions. The CVE record does not provide CPEs or a detailed affected-products table, so validation must rely on model and firmware inventory.
Exploitation context
The provided CVSS vector indicates local attack access and high privileges are required, with no user interaction. The source bundle does not cite active exploitation, and KEV status is false. No exploit maturity or public exploitation evidence is provided.
Researcher notes
The CVE record lacks CWE, CPEs, and detailed attack-surface description in the supplied data. Researchers should avoid broad assumptions and base matching on the named NETGEAR models, firmware thresholds, CVSS vector, and the vendor advisory.
Mitigation direction
- Upgrade affected NETGEAR devices to the listed fixed firmware version or later.
- Confirm remediation against the NETGEAR advisory for PSV-2017-2158.
- Replace devices that cannot be updated to a non-vulnerable firmware.
- Track this as network edge asset remediation, not endpoint patching.
Validation and detection
- Inventory NETGEAR R6220, R6700v2, R6800, WNDR3700v5, and D7000 devices.
- Record each device firmware version from administration or asset management data.
- Compare firmware versions against the CVE fixed-version thresholds.
- Document any device with unavailable firmware evidence as requiring manual review.
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-2017-18841 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
- 6.7 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AC:L/AV:L/A:H/C:H/I:H/PR:H/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:L/A:H/C:H/I:H/PR:H/S:U/UI:N0.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
6.7MediumVector: CVSS:3.0/AC:L/AV:L/A:H/C:H/I:H/PR:H/S:U/UI:N
Source materials
- CVE List V5 sourceCVE List V5
- https://kb.netgear.com/000049018/Security-Advisory-for-Command-Injection-on-Some-Routers-and-a-Modem-Router-PSV-2017-2158CVE 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.