Security readout for executives and security teams
Plain-English summary
This is a serious flaw in specific older NETGEAR routers. Someone with network proximity could trigger a memory corruption bug before logging in, risking confidentiality, integrity, and availability. It matters most where these models remain in production or remote offices with outdated firmware.
Executive priority
Treat this as a high-priority legacy device remediation item. It is not confirmed as actively exploited in the supplied sources, but pre-authentication router flaws can create broad business risk when outdated equipment remains deployed.
Technical view
CVE-2017-18722 is a pre-authentication stack-based buffer overflow affecting NETGEAR D6200 before 1.1.00.24 and R6700v2, R6800, and R6900v2 before 1.1.0.42. The CVSS 3.0 score is 8.8 with adjacent-network attack vector, no privileges, no user interaction, and high impact.
Likely exposure
Exposure is limited to the named NETGEAR models running firmware older than the fixed versions. Risk is higher on shared, branch, guest, or unmanaged networks where an unauthenticated adjacent attacker could reach the device.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. The risk remains significant because the issue is pre-authentication, low-complexity, and high-impact within adjacent network reach.
Researcher notes
The record provides affected models, fixed-version thresholds, CVSS vector, and a NETGEAR advisory reference. It does not include detailed root cause, proof-of-concept status, exploit telemetry, or CWE mapping in the supplied bundle.
Mitigation direction
- Identify whether affected NETGEAR models are still deployed.
- Upgrade D6200 devices to 1.1.00.24 or later.
- Upgrade R6700v2, R6800, and R6900v2 to 1.1.0.42 or later.
- Check NETGEAR advisory guidance for model-specific firmware instructions.
- Restrict management and device access to trusted network segments.
Validation and detection
- Inventory routers by exact model and firmware version.
- Compare firmware versions against the affected version thresholds.
- Confirm no affected model is reachable from untrusted adjacent networks.
- Review NETGEAR advisory for any additional vendor checks.
- Document upgraded devices and remaining exceptions.
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-2017-18722 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/000052275/Security-Advisory-for-Pre-Authentication-Stack-Overflow-on-Routers-PSV-2017-2146CVE 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.