Security readout for executives and security teams
Plain-English summary
Some NETGEAR routers have a pre-authentication stack overflow that an unauthenticated attacker on an adjacent network could trigger. Successful exploitation could seriously affect confidentiality, integrity, and availability. The public bundle does not show active exploitation, but impacted routers should be updated promptly because they are network control points.
Executive priority
Treat this as a high-priority network appliance patching issue. It is not listed as known exploited in the provided sources, but vulnerable routers can become high-impact footholds if reachable from attacker-adjacent networks.
Technical view
CVE-2017-18728 is a stack-based buffer overflow affecting NETGEAR D6200 before 1.1.00.24 and R6700v2, R6800, and R6900v2 before 1.1.0.42. CVSS 3.0 is 8.8 with adjacent-network attack vector, low complexity, no privileges, no user interaction, and high C/I/A impact.
Likely exposure
Exposure is limited to listed NETGEAR models running older firmware. The CVSS vector indicates adjacent-network reachability, so focus on LAN, Wi-Fi, guest, branch, and unmanaged network segments where these routers are present.
Exploitation context
The source bundle marks KEV as false and provides no cited evidence of active exploitation. The risk comes from unauthenticated pre-authentication memory corruption on routers, not from confirmed public exploitation in the provided sources.
Researcher notes
The bundle does not provide CWE classification, packet path details, proof-of-concept status, or exploit indicators. Affected product data appears in the CVE description while the structured affected fields are n/a, so validation should rely on model and firmware checks.
Mitigation direction
- Update D6200 firmware to 1.1.00.24 or later.
- Update R6700v2, R6800, and R6900v2 to 1.1.0.42 or later.
- Review the NETGEAR advisory for model-specific upgrade guidance.
- Restrict router administration to trusted networks where supported.
- Replace unsupported devices if fixed firmware cannot be applied.
Validation and detection
- Inventory NETGEAR D6200, R6700v2, R6800, and R6900v2 devices.
- Compare installed firmware against the affected version thresholds.
- Confirm router management access is not reachable from untrusted segments.
- Check asset records for unmanaged branch, lab, and home-office 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-2017-18728 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
- High
- CVSS
- 8.8 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AC:L/AV:A/A:H/C:H/I:H/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:A/A:H/C:H/I:H/PR:N/S:U/UI:N2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
8.8HighVector: CVSS:3.0/AC:L/AV:A/A:H/C:H/I:H/PR:N/S:U/UI:N
Source materials
- CVE List V5 sourceCVE List V5
- https://kb.netgear.com/000051527/Security-Advisory-for-Pre-Authentication-Stack-Overflow-on-Routers-PSV-2017-2136CVE 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.