EUVD-2025-209626Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Trigger is WiFi channel configuration/power-rate-table processing, so AV:A (radio proximity) not AV:N; no auth/UI needed; availability-only transient DoS gives A:H, C:N/I:N.
Primary rating from NVD.
CVSS VectorNVD
Lifecycle Timeline
9DescriptionNVD
Transient DOS when processing target power rate tables during channel configuration.
AnalysisAI
Transient denial-of-service in Qualcomm Snapdragon WiFi firmware allows an attacker within WiFi radio range to crash the wireless subsystem by supplying a crafted target power rate table during channel configuration. No authentication or user interaction is required, but the effect is self-recovering and limited to a temporary loss of wireless connectivity on affected devices. No public exploit code has been identified, and the EPSS score is 0.02% (3rd percentile), indicating a very low likelihood of exploitation; this low real-world risk contrasts with the vendor's 7.5 (HIGH) CVSS score.
Technical ContextAI
The vulnerability is a buffer over-read (CWE-126) in the WiFi firmware's handling of target power rate tables during channel configuration. When the firmware processes a malformed table, it reads beyond the allocated buffer, causing a crash of the wireless subsystem. The affected component is the Qualcomm Snapdragon firmware (CPE: cpe:2.3:a:qualcomm,_inc.:snapdragon:*:*:*:*:*:*:*:*), and the attack surface is local to the WiFi radio (AV:A) rather than remotely exploitable over the internet as the vendor's AV:N vector suggests. The CISA SSVC assessment rates exploitation as 'none', automatable as 'no', and technical impact as 'partial', consistent with a transient DoS that does not permit code execution or data disclosure. The extensive list of affected Snapdragon chipsets and modules reflects the broad deployment of this firmware across mobile, automotive, IoT, and networking products.
RemediationAI
Patch available per vendor advisory: Qualcomm has published security bulletin May 2026 at https://docs.qualcomm.com/product/publicresources/securitybulletin/may-2026-bulletin.html, which should contain the relevant firmware updates for affected Snapdragon chipsets. Device OEMs and downstream vendors must integrate these patches into their firmware releases; end users should apply the latest firmware updates provided by their device manufacturer. Because the vulnerability is in WiFi firmware and requires radio proximity (AV:A) to exploit, a practical compensating control is to disable WiFi when not in use or to limit physical and radio-frequency access to trusted environments, though this may impact device functionality. No other specific workarounds are documented; monitoring for repeated WiFi disconnections or crashes of the wireless subsystem may help detect exploitation attempts, but the primary mitigation is timely firmware patching.
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Same weakness CWE-126 – Buffer Over-read
View allSame technique Buffer Overflow
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External POC / Exploit Code
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