Security readout for executives and security teams
Plain-English summary
CVE-2026-0408 affects certain NETGEAR WiFi range extenders. An authenticated user on the local network could access a generated file that contains router GUI usernames and passwords. This is not reported as actively exploited and requires local-network authentication, but credential exposure can lead to broader device compromise.
Executive priority
Treat as a scheduled but important network-device remediation. Prioritize sites using the named extenders, especially shared offices, guest networks, and environments where many users have LAN access.
Technical view
The CVE describes path traversal in NETGEAR EX5000, EX3110, EX6110, and EX2800 range extenders. With adjacent/LAN access and low privileges, an attacker can view the dynamically generated webproc file containing submitted GUI credentials. CVSS v4.0 is 6.1. The CVE metadata also lists CWE-287, though the description calls it path traversal.
Likely exposure
Exposure is likely limited to environments using the listed NETGEAR extender models where an authenticated LAN user can reach the device management interface. The source bundle does not provide clear affected firmware ranges; validate models and firmware against NETGEAR’s advisory and product support pages.
Exploitation context
No CISA KEV listing or cited source indicates active exploitation. Exploitation is constrained by adjacent network access and low privileges, but successful access may disclose administrator credentials submitted to the router GUI.
Researcher notes
The provided data lacks precise vulnerable firmware ranges and does not show public exploitation. The affected list uses version value “0” with defaultStatus “unaffected,” so rely on NETGEAR’s advisory for authoritative model and firmware applicability.
Mitigation direction
- Review NETGEAR’s January 2026 security advisory for model-specific guidance.
- Update affected extenders using the linked NETGEAR product support pages.
- Restrict management access to trusted LAN users and networks.
- Rotate router GUI credentials after remediation if exposure is suspected.
Validation and detection
- Inventory NETGEAR EX5000, EX3110, EX6110, and EX2800 devices.
- Check current firmware versions in device administration interfaces.
- Compare firmware status with NETGEAR advisory and support pages.
- Confirm management interfaces are not reachable by untrusted LAN segments.
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.
CWE-287: Credential and account abuse lookup
Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-0408 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
- 6.1 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amber
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:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amber——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
6.1MediumVector: CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amber
Source materials
- CVE List V5 sourceCVE List V5
- https://www.netgear.com/support/product/ex5000CVE reference · product, patch
- https://www.netgear.com/support/product/ex3110CVE reference · product, patch
- https://www.netgear.com/support/product/ex6110CVE reference · product, patch
- https://www.netgear.com/support/product/ex2800CVE reference · product, patch
- https://kb.netgear.com/000070442/January-2026-NETGEAR-Security-AdvisoryCVE reference · vendor-advisory
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.
Improper Authentication
Improper Authentication represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.