Security readout for executives and security teams
Plain-English summary
This flaw affects specific NETGEAR router models running older firmware. A stack overflow could let an attacker compromise confidentiality, integrity, and availability. Sources describe it as post-authentication, while the provided CVSS vector indicates adjacent-network attack conditions. Treat affected routers as high priority where still deployed.
Executive priority
Prioritize remediation for any listed NETGEAR router still in service. The business risk is highest for unmanaged branch, small-office, or home-office devices that may fall outside normal patch governance.
Technical view
CVE-2017-18758 is a stack-based buffer overflow affecting NETGEAR R6700v2, R6800, and R6900v2 firmware before 1.1.0.42. The CVSS 3.0 score is 8.8 with high confidentiality, integrity, and availability impact. Available evidence names affected versions but provides limited public technical detail.
Likely exposure
Exposure is likely limited to environments still operating the listed NETGEAR router models on firmware earlier than 1.1.0.42. The provided CVSS vector indicates adjacent network access; the description and advisory framing indicate authenticated or post-authentication context.
Exploitation context
The source bundle does not identify active exploitation, public weaponization, or CISA KEV inclusion. Because the flaw impacts routers and has high impact ratings, exposure should still be validated promptly, especially on legacy or unmanaged network devices.
Researcher notes
Public source detail is sparse. The CVE and advisory establish affected models, pre-1.1.0.42 versions, stack overflow class, and high impact. Avoid assuming unauthenticated exploitation because the description and advisory indicate authenticated or post-authentication context despite the provided CVSS PR:N vector.
Mitigation direction
- Upgrade affected routers to firmware 1.1.0.42 or later per NETGEAR guidance.
- Check the NETGEAR advisory for model-specific firmware availability and instructions.
- Restrict router administration access to trusted users and networks.
- Retire unsupported or unpatchable affected router models.
Validation and detection
- Inventory NETGEAR R6700v2, R6800, and R6900v2 routers.
- Confirm each affected router runs firmware 1.1.0.42 or later.
- Review who has authenticated administrative access to affected routers.
- Check whether any affected router remains in production or remote-office use.
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-2017-18758 mapping review
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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/000051487/Security-Advisory-for-Post-Authentication-Stack-Overflow-on-Some-Routers-PSV-2017-2157CVE 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.