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Predator Connect W6x FirmwareOperating system · Acer

CVE-2026-49197

CRITICAL · 9.8 CVSS v3.1 Published 2026-05-29
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Web endpoints intended for the Acer Connect app improperly validate the HTTP Authorization header, failing to block requests when Base64 decoding fails.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

The Acer Connect app's web endpoints fail to properly validate the HTTP Authorization header. When Base64 decoding of the header fails, the requests are not blocked as they should be, potentially allowing authentication bypass or unauthorized access due to improper input validation.

MitigationImplement proper Base64 decoding validation for the Authorization header with strict rejection of malformed credentials, and ensure failed decode attempts are treated as authentication failures rather than being bypassed.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Predator Connect W6x FirmwareOperating system
Affected:<= w6x_gbl_2.00.000005

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify device model
    Access the device admin interface or check the device label to confirm the model is Acer Predator Connect W6x
    Affected if Device is not an Acer Predator Connect W6x variant
  2. Check firmware version
    Navigate to the router web interface, go to Administration or System settings, and locate the firmware version information. Compare against w6x_gbl_2.00.000005
    Affected if Firmware version is w6x_gbl_2.00.000005 or earlier
  3. Verify web interface is enabled
    Check router configuration for web management interface status. Confirm HTTP/HTTPS management is accessible from expected network segments
    Affected if Web interface is enabled and accessible
  4. Review authentication logs for anomalies
    Examine system logs for failed authentication attempts or unusual access patterns on web endpoints, focusing on requests with malformed Authorization headers
    Affected if Logs show patterns of malformed Authorization header requests or unexpected unauthenticated access attempts

The environment is affected if the device is an Acer Predator Connect W6x running firmware w6x_gbl_2.00.000005 or earlier with the web interface enabled.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Implement proper Base64 decoding validation for the Authorization header with strict rejection of malformed credentials, and ensure failed decode attempts are treated as authentication failures rather than being bypassed.

Recommended fix Moderate confidence

Predator Connect W6x firmware > w6x_gbl_2.00.000005 (latest available from Acer)

  1. 1. Disconnect the Predator Connect W6x device from any untrusted networks before performing the firmware update.
  2. 2. Navigate to the official Acer support page at community.acer.com or Acer's official support website.
  3. 3. Locate the Predator Connect W6x product page and check for available firmware updates.
  4. 4. Download the latest firmware version that is newer than w6x_gbl_2.00.000005.
  5. 5. Access the router's web management interface using a trusted, wired connection.
  6. 6. Navigate to the firmware upgrade section (typically under Administration or System settings).
  7. 7. Upload and apply the new firmware file.
  8. 8. After the device restarts, verify the new firmware version in the admin interface.
Caveat Review release notes for any configuration changes or feature modifications that may require reconfiguration of existing settings

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Predator Connect W6x Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA4.0 h
22.0 hours of engineering $3,860
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-49197 in production — separate from our analysis above.

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What this is

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What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
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  • No spam, self-promotion, credentials, or personal data