Security readout for executives and security teams
Plain-English summary
CVE-2017-18846 is a stack-based buffer overflow in certain NETGEAR routers. It is rated medium, but compromise could have high impact on confidentiality, integrity, and availability. Exposure appears limited to listed models running firmware older than the fixed versions named in the advisory.
Executive priority
Prioritize remediation for listed NETGEAR models in offices, remote sites, and labs. The rating is moderate because exploitation requires local access and high privileges, but successful compromise could seriously affect router security and business connectivity.
Technical view
The source describes a stack-based buffer overflow affecting specific NETGEAR R6250, R6400v2, R7000P/R6900P, R7900, R8300, R8500, and D8500 firmware versions. CVSS 3.0 is 6.7 with local attack vector, low complexity, high privileges required, no user interaction, unchanged scope, and high CIA impact.
Likely exposure
Organizations may be exposed if they operate the listed NETGEAR models below the fixed firmware versions. The CVSS vector indicates local access and high privileges are required; the provided sources do not establish remote internet exposure.
Exploitation context
The source bundle does not cite active exploitation, and KEV status is false. No public exploit status is established by the provided sources. The advisory-level details are limited and do not identify the vulnerable component or attack path.
Researcher notes
The CVSS vector materially constrains likely exploitation: AV:L and PR:H. The provided sources name affected versions and fixed thresholds but do not include root-cause detail, vulnerable service, proof-of-concept status, or operational indicators. Avoid assuming remote exploitability without additional vendor evidence.
Mitigation direction
- Inventory NETGEAR router models and firmware versions across managed environments.
- Upgrade affected devices to the fixed firmware versions or later per NETGEAR guidance.
- Restrict administrative access to trusted local networks and authorized administrators.
- Replace devices that cannot run fixed vendor-supported firmware.
Validation and detection
- Compare each router model and firmware version against the affected version list.
- Confirm firmware update completion through the device management interface or asset records.
- Review access controls for local administrative interfaces.
- Monitor vendor guidance for any additional fixes or clarifications.
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
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CVE-2017-18846 mapping review
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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/000049013/Security-Advisory-for-Stack-Overflow-on-Some-Routers-PSV-PSV-2017-0793CVE 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.