CVE-2026-25268
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 · uneditedMemory Corruption when processing invalid HT40 channel layouts during dynamic channel switching operations.
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 confidenceThis is a memory corruption vulnerability in wireless networking functionality, specifically affecting the processing of invalid HT40 (40MHz channel width) channel layouts during dynamic channel switching. An attacker could trigger this by sending specially crafted channel configuration data, potentially leading to arbitrary code execution or denial of service.
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 dataall versionsall versionsall versionsall versionsall versionsall versionsall versionsall versionsCVSS 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
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/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 wireless hardware modelCheck system documentation, hardware labels, or use commands like 'lspci', 'iw list', 'cat /proc/net/wireless' or vendor-specific tools to identify the Qualcomm wireless chip/firmware version in useAffected if The hardware is any of: Wsa8835, 5g Fixed Wireless Access Platform, Ar8035, Cq7790, Cq8725s, Qca4024, Qca6174a, or Qca8075
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Verify dynamic channel switching is enabledCheck wireless driver or firmware configuration for dynamic channel switching settings. This may be in driver config files, web UI settings, or via iw/iwlist commands showing channel adaptation featuresAffected if Dynamic channel switching or automatic channel selection is actively enabled on the wireless interface
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Check current channel width configurationUse 'iw dev <interface> info' or similar wireless diagnostic tools to inspect the current operating channel width. Look for 40MHz (HT40) settingsAffected if The wireless interface is configured to operate in HT40 (40MHz channel width) mode
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Inspect channel configuration logs or management interfacesReview system logs, wireless management daemon logs, or configuration interfaces for dynamic channel switching activity and HT40 channel layout processingAffected if Dynamic channel switching is actively processing or has recently processed HT40 channel configurations
You are affected if your device uses any of the listed Qualcomm chips and has both dynamic channel switching enabled and HT40 channel width configured for operation.
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 dataApply vendor patches for affected wireless driver/firmware once available. Implement input validation on channel configuration parameters before processing. Consider disabling dynamic channel switching until a patch is deployed.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,600.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-25268 — 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-2026-25268 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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- Version or environment caveats, and links to real fixes
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