EUVD-2026-52736
GHSA-6pfg-325p-mjxq
Severity by source
AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Adjacent unauthenticated attacker sends a malformed Wi-Fi frame requiring no interaction; scope change reflects crash propagation from Wi-Fi driver to host OS; no confidentiality or integrity impact.
Primary rating from Vendor (qualcomm).
CVSS VectorVendor: qualcomm
Lifecycle Timeline
2DescriptionCVE.org
Transient DOS when processing a short target wake time channel usage response frame with insufficient packet size.
AnalysisAI
Transient denial of service in Qualcomm Snapdragon's Wi-Fi 6 stack allows adjacent, unauthenticated attackers to crash affected devices by transmitting a malformed Target Wake Time (TWT) channel usage response frame with an undersized packet payload. The CVSS scope change (S:C) indicates the crash propagates beyond the Wi-Fi subsystem to impact the broader host environment. No public exploit code and no CISA KEV listing have been identified at time of analysis.
Technical ContextAI
The vulnerability resides in the Qualcomm Snapdragon platform's 802.11ax (Wi-Fi 6) frame processing logic. Target Wake Time (TWT) is a power-management feature introduced in Wi-Fi 6 that allows devices to negotiate scheduled sleep and wake cycles through the exchange of TWT action frames. CWE-126 (Buffer Over-Read) identifies the root cause: when a TWT channel usage response frame arrives with a packet size smaller than the parser anticipates, the parser reads beyond the legitimate end of the received buffer, triggering a fault condition. The affected CPE cpe:2.3:a:qualcomm,_inc.:snapdragon:*:*:*:*:*:*:*:* uses a wildcard version field, indicating broad applicability across the Snapdragon SoC family. The tags confirm a buffer overflow class of defect consistent with CWE-126.
RemediationAI
Apply firmware and driver updates published by Qualcomm in the August 2026 Security Bulletin (https://docs.qualcomm.com/product/publicresources/securitybulletin/august-2026-bulletin.html); specific patched firmware or driver version numbers were not present in the available data and must be obtained directly from the bulletin or via OEM-distributed security updates. As a compensating control on devices where patching is delayed, disabling Wi-Fi 6 TWT functionality through driver configuration or system settings would eliminate the vulnerable code path at the cost of increased Wi-Fi power consumption and reduced battery life. In high-sensitivity deployments where adjacent wireless threats are plausible, restricting the operational wireless environment to trusted infrastructure reduces attacker proximity opportunities until a patch can be applied.
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Same weakness CWE-126 – Buffer Over-read
View allSame technique Buffer Overflow
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External POC / Exploit Code
Leaving vuln.today