Security readout for executives and security teams
Plain-English summary
Some NETGEAR routers and DSL modem routers can disclose sensitive information when running older firmware. The CVE is medium severity because confidentiality impact is high, but the recorded attack vector is local, not remote over the internet.
Executive priority
Treat as a moderate-priority perimeter and branch-office hygiene issue. Prioritize remediation where affected devices sit in sensitive environments or are difficult to monitor.
Technical view
CVE-2017-18789 is a sensitive information disclosure issue affecting listed NETGEAR R6250, R6400, R6400v2, R7100LG, R7300, R8300, R8500, D6220, D6400, and D8500 firmware versions before specified fixed releases. CVSS 3.0 is 6.2 with AV:L, PR:N, UI:N, C:H, I:N, A:N.
Likely exposure
Exposure is limited to organizations still using the named NETGEAR models below the fixed firmware versions. The source bundle does not support broader product impact beyond the listed devices.
Exploitation context
The CVE is not listed as KEV in the bundle. No cited source states active exploitation. CVSS indicates low complexity, no privileges, and no user interaction, but a local attack vector.
Researcher notes
The structured affected section says n/a, so the useful scope is the model/version list in the CVE description. No CWE or technical root cause is provided. Do not infer exposed data types beyond sensitive information disclosure.
Mitigation direction
- Inventory the listed NETGEAR router and DSL modem router models.
- Upgrade affected devices to the fixed firmware versions or later.
- Check the NETGEAR advisory for model-specific firmware guidance.
- Retire unsupported devices if fixed firmware is unavailable.
Validation and detection
- Confirm each device model exactly matches the affected list.
- Record current firmware and compare it with the fixed version threshold.
- Verify firmware upgrade completion through device administration records.
- Review network asset inventory for unmanaged consumer-grade routers.
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-2017-18789 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
- 6.2 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AC:L/AV:L/A:N/C:H/I:N/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:L/A:N/C:H/I:N/PR:N/S:U/UI:N2.53.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
6.2MediumVector: CVSS:3.0/AC:L/AV:L/A:N/C:H/I:N/PR:N/S:U/UI:N
Source materials
- CVE List V5 sourceCVE List V5
- https://kb.netgear.com/000049373/Security-Advisory-for-Sensitive-Information-Disclosure-Vulnerability-on-Some-Routers-and-Some-DSL-Modem-Routers-PSV-2017-0426CVE 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.