Security readout for executives and security teams
Plain-English summary
This vulnerability lets a logged-in user run unintended system commands on certain NETGEAR routers, gateways, and extenders. It is not described as remote unauthenticated compromise, but successful abuse could fully affect confidentiality, integrity, and availability of the device.
Executive priority
Treat this as a moderate-priority network infrastructure cleanup item. Prioritize devices used at business edges, branch offices, or sensitive network segments, especially where administrator access is shared or weakly controlled.
Technical view
CVE-2017-18773 is a post-authentication command injection issue affecting specified NETGEAR firmware versions before fixed releases. The CVSS 3.0 vector is AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H, scored 6.7. The source bundle lists affected D6100, D7800, EX6150v2, R6100, R7500, R7500v2, R7800, WNDR4300 variants, WNDR4500v3, and WNR2000v5.
Likely exposure
Exposure is limited to organizations still running the named NETGEAR models below the fixed firmware versions. The vulnerability requires authenticated access, so shared admin credentials, weak router administration controls, or compromised management accounts increase practical risk.
Exploitation context
The provided sources do not report active exploitation, and the CVE is not flagged as CISA KEV. The issue still matters because command injection on network edge devices can lead to high-impact device compromise after authentication.
Researcher notes
Evidence is limited to the CVE record and NETGEAR advisory reference. The affected list is model-and-version specific, but the bundle does not provide endpoint details, proof-of-concept information, or exploitation telemetry. Avoid assuming other NETGEAR products are affected.
Mitigation direction
- Inventory the listed NETGEAR models and record current firmware versions.
- Upgrade affected devices to the fixed firmware versions or later.
- Use NETGEAR advisory guidance for model-specific firmware availability.
- Restrict administrative access to trusted management networks only.
- Review and strengthen device administrator account controls.
Validation and detection
- Compare each device model and firmware version against the CVE affected-version list.
- Confirm upgraded devices run the fixed firmware version or later.
- Verify administrative interfaces are not broadly reachable.
- Review device logs for suspicious authenticated administrative activity.
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-2017-18773 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/000049556/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Routers-Gateways-and-Extenders-PSV-2017-2184CVE 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.