Quick answer
Direct answer
Risk scores
| CVSS metric | What it means |
|---|---|
| Attack vector (AV:N) | Network: reachable remotely |
| Attack complexity (AC:H) | High complexity |
| Privileges required (PR:H) | High privileges required |
| User interaction (UI:R) | A user must take an action |
| Scope (S:C) | Scope changed: impact spreads beyond the component |
| Confidentiality (C:H) | High confidentiality impact |
| Integrity (I:H) | High integrity impact |
| Availability (A:H) | High availability impact |
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H
About Qualcomm Ar8035 Firmware
CVE-2026-21367 affects Qualcomm Ar8035 Firmware, a product from Qualcomm. Before acting, confirm where Qualcomm Ar8035 Firmware runs in your estate, who owns it and whether it is reachable from the internet, because exposure decides real risk more than the score alone.
What the flaw is
In plain terms: Transient DOS when processing nonstandard FILS Discovery Frames with out-of-range action sizes during initial scans.
Based on its CVSS vector, the flaw can be reached over the network, needs some level of access, and relies on a user taking an action. Apply the vendor fix and confirm exposure on internet facing and business critical assets first.
Affected versions and timeline
| Field | Detail |
|---|---|
| Product | Qualcomm Ar8035 Firmware |
| Affected versions | Ar8035 Firmware all listed versions; Cologne Firmware all listed versions; Csr8811 Firmware all listed versions; Fastconnect 6200 Firmware all listed versions; Fastconnect 6700 Firmware all listed versions; Fastconnect 6900 Firmware all listed versions; Fastconnect 7800 Firmware all listed versions; Fwa Gen 3 Ultra Firmware all listed versions; G2 Gen 1 Firmware all listed versions; Immersive Home 214 Platform Firmware all listed versions; Immersive Home 216 Platform Firmware all listed versions; Immersive Home 316 Platform Firmware all listed versions |
| Published | Apr 6, 2026 |
| Last modified | Jun 17, 2026 |
| Added to CISA KEV | Not listed |
| Assigning CNA | product-security@qualcomm.com |
How to detect it
- Inventory every instance of Qualcomm Ar8035 Firmware and record the running version against the affected range above.
- Check external attack surface scans for internet facing instances of the component.
- Review logs on affected systems for unusual requests, errors or new processes around the vulnerable function.
- Confirm with an authenticated vulnerability scan once your scanner has a check for this CVE.
How to fix it
- Apply the fixed version of Qualcomm Ar8035 Firmware named in the vendor advisory.
- If patching must wait, restrict network access to the affected service and put it behind authentication or a web application firewall rule.
- Rescan after the change to prove the exposure is gone, then close the ticket.
CTEM action plan
| CTEM stage | What to do for this CVE |
|---|---|
| Scope | Add every business service that depends on Qualcomm Ar8035 Firmware to the current CTEM cycle. |
| Discover | Find all instances, including shadow and cloud deployments, and record versions and exposure. |
| Prioritize | Rank using EPSS and CVSS together with asset exposure and business impact. |
| Validate | Confirm the flaw is reachable and exploitable in your environment and that compensating controls work. |
| Mobilize | Assign the fix to the asset owner with a due date matched to the priority, then verify closure. |
CWE References
Technical References
Frequently asked questions
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