Security readout for executives and security teams
Plain-English summary
CVE-2017-18788 is a post-authentication command injection issue in many NETGEAR routers, gateways, and extenders. An attacker who already has high-privilege local authenticated access could potentially run commands on affected devices. The CVSS score is 6.7, so urgency is moderate, especially where admin access is shared or these devices protect sensitive networks.
Executive priority
Treat this as a moderate-priority infrastructure hygiene issue. It is not documented as actively exploited in the supplied evidence, but successful abuse could fully affect device confidentiality, integrity, and availability after privileged local access is obtained.
Technical view
The CVE lists command injection by an authenticated user affecting many NETGEAR models before specific firmware versions. The CVSS 3.0 vector requires local access and high privileges, with no user interaction, and rates confidentiality, integrity, and availability impact as high. No CWE, endpoint details, exploit method, or operational indicators are provided in the supplied sources.
Likely exposure
Exposure is likely limited to organizations still running listed NETGEAR model firmware below the fixed versions. Risk is more relevant for managed routers, gateways, and extenders where local administrative access is available to multiple users or exposed through weak operational controls.
Exploitation context
The supplied sources do not show known active exploitation, and the CVE is not marked in KEV. Exploitation requires authenticated high-privilege local access according to the CVSS vector, so this is not described as a remote unauthenticated internet attack in the provided evidence.
Researcher notes
The source bundle provides broad model/version coverage but not vulnerable parameters, proof-of-concept details, logs, or detection indicators. Validation should focus on asset and firmware matching, not exploit reproduction. Avoid assuming impact beyond the listed NETGEAR devices and pre-fixed firmware versions.
Mitigation direction
- Inventory NETGEAR devices against the affected model list and firmware thresholds.
- Upgrade affected devices to the fixed firmware versions identified by NETGEAR.
- Check NETGEAR guidance for model-specific update and support instructions.
- Restrict router administration to trusted administrators and managed networks.
- Review shared or stale administrator credentials on affected devices.
Validation and detection
- Confirm exact model and firmware version on each NETGEAR device.
- Compare installed firmware with the CVE fixed-version thresholds.
- Verify upgraded devices report firmware at or above the listed fixed release.
- Check whether administrative access is limited to authorized local users.
- Document devices that cannot be updated and escalate replacement decisions.
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-2017-18788 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/000049527/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Routers-Gateways-and-Extenders-PSV-2017-2947CVE 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.