CVE-2026-25268
HIGHCVE-2026-25268 is a high-severity (CVSS 8.8) CWE-121 vulnerability in qualcomm 5g fixed wireless access platform firmware. O3 Security detects and blocks CVE-2026-25268 exploitation at runtime via eBPF exploit-chain detection and L7 egress monitoring, even on unpatched systems.
Memory Corruption when processing invalid HT40 channel layouts during dynamic channel switching operations.
Description
Memory Corruption when processing invalid HT40 channel layouts during dynamic channel switching operations.
Affected Products
5g fixed wireless access platform firmwarequalcommar8035 firmwarequalcommcq7790 firmwarequalcommcq8725s firmwarequalcommcsr8811 firmwarequalcommfastconnect 6700 firmwarequalcommDetection & mitigation playbook
Vendor / applianceDetect
Inventory every qualcomm 5g fixed wireless access platform firmware deployment and check each version against the affected-products list above. Because the exploit targets the running system rather than your application code, also watch for remote code execution at the network and runtime layer — O3 flags the exploit behaviour from runtime telemetry and egress traffic even before a vulnerable build is confirmed.
Remediation status
No patch has shipped for CVE-2026-25268 yet — track the qualcomm 5g fixed wireless access platform firmware advisory for a fixed release and apply the workarounds below in the meantime.
Mitigate without a patch
Cut exposure now: restrict the management/admin interface to trusted networks, segment the device, and apply the vendor's recommended configuration mitigations and any WAF/IPS signature. O3's runtime protection blocks the exploit chain at execution, holding the line on unpatched or end-of-life systems until you can patch.
How O3 protects you
O3 detects and blocks CVE-2026-25268 exploitation at runtime: eBPF exploit-chain detection, plus L7 egress monitoring that catches the post-exploitation callback and severs the attacker's outbound channel.
Tailored to CVE-2026-25268. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2026-25268 being exploited in your environment?
O3's eBPF runtime sensors and L7 egress monitoring detect and block the CVE-2026-25268 exploit chain at execution — protecting unpatched and end-of-life systems until the vendor patch is applied.