CVE-2026-49196
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 · uneditedThe Wi-Fi device blocking feature fails to sanitize MAC address input, allowing injection and execution of arbitrary shell commands.
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 confidenceA command injection vulnerability exists in the Wi-Fi device blocking feature where the MAC address input field does not properly sanitize user-supplied data before passing it to shell execution functions. An attacker with access to the device blocking interface can inject arbitrary shell commands through specially crafted MAC address input.
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<= w6x_gbl_2.00.000005CVSS 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
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:H/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 checksWork through these to decide whether this CVE applies to you.
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Identify the device modelCheck the device label or web interface for the exact model name - it must be Acer Predator Connect W6xAffected if The device is not an Acer Predator Connect W6x, this CVE does not apply
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Check the firmware versionAccess the router web interface (typically at 192.168.1.1) and navigate to System Settings or Administration > Firmware Upgrade to view the current firmware version. Compare it to the affected version: w6x_gbl_2.00.000005 or lowerAffected if The firmware version is w6x_gbl_2.00.000005 or any earlier version
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Locate the Wi-Fi device blocking featureIn the router web interface, navigate to the Wi-Fi or Wireless settings section to find the device blocking, device filter, or access control feature that accepts MAC addressesAffected if This feature is not present or accessible in the firmware version being checked
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Verify the MAC address input field accepts arbitrary inputIf you have administrative access, attempt to input a test MAC address and observe whether the interface accepts malformed input. Alternatively, inspect the web interface HTML or API requests for the device blocking feature to see if the MAC address field has input validationAffected if The MAC address input field does not enforce strict XX:XX:XX:XX:XX:XX format validation, accepting special characters that could be used for command injection
You are affected if you have an Acer Predator Connect W6x router with firmware version w6x_gbl_2.00.000005 or earlier, and the Wi-Fi device blocking feature with its MAC address input field is accessible or enabled.
Generated from the published advisory. Verify against your own configuration.
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.
From vendor dataImplement strict input validation that only allows valid MAC address formats (colon, hyphen, or dot separated hexadecimal pairs) and use parameterized commands or avoid shell execution entirely when processing the input.
- Consultation4.0 h
- Implementation8.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,656.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-49196 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-49196 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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