EUVD-2026-52730
GHSA-fc22-5h8w-j83c
Severity by source
AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Adjacent wireless vector with no auth required; integer underflow yields memory read only, so I:N and A:N are appropriate.
Primary rating from Vendor (qualcomm).
CVSS VectorVendor: qualcomm
Lifecycle Timeline
2DescriptionCVE.org
Information Disclosure when processing wireless network channel switch information with improperly formatted length fields.
AnalysisAI
Information disclosure in Qualcomm Snapdragon wireless subsystem allows an adjacent-network attacker to leak sensitive memory contents by transmitting malformed wireless channel switch frames with invalid length fields. The root cause is CWE-191 (integer underflow), where improperly formatted length values trigger an arithmetic wrap condition during 802.11 management frame parsing, resulting in out-of-bounds memory reads. No public exploit code has been identified and the vulnerability is not listed in CISA KEV, though the low attack complexity and no-authentication requirement on an adjacent wireless segment represent a meaningful real-world risk for shared wireless environments.
Technical ContextAI
The vulnerability resides in the Qualcomm Snapdragon wireless chipset firmware or driver, specifically in the parser that handles wireless channel switch announcement (CSA) or related 802.11 management frame structures. CWE-191 (Integer Underflow / Wrap-or-Wraparound) indicates that when a length field in a channel switch information element is malformed to be anomalously small or zero, arithmetic subtraction wraps below the minimum representable integer value. This wrap produces an unexpectedly large computed length or offset used in subsequent memory reads, causing the parser to read memory beyond the intended buffer boundary. The affected CPE (cpe:2.3:a:qualcomm,_inc.:snapdragon:*:*:*:*:*:*:*:*) encompasses the broad Snapdragon product family, which spans mobile SoCs, automotive platforms, IoT modules, and PC connectivity chips - all sharing Qualcomm's WLAN stack.
RemediationAI
Consult the Qualcomm August 2026 Security Bulletin (https://docs.qualcomm.com/product/publicresources/securitybulletin/august-2026-bulletin.html) to identify exact patched firmware or driver versions for your specific Snapdragon SKU. OEM device vendors (e.g., Samsung, Xiaomi, OnePlus) must integrate Qualcomm's upstream fix into their own security updates; end users should apply the latest OEM firmware or Android security patch as soon as the OEM releases it. If patching is not immediately possible, reducing exposure to untrusted wireless networks limits the adjacent-vector attack surface - for enterprise devices, enforcing 802.1X/WPA3-Enterprise and disabling automatic connection to open or guest networks prevents an attacker from achieving the adjacent-network position needed to exploit this flaw. Note that disabling WiFi entirely eliminates the attack surface but may be operationally disruptive. No exact patched version number was independently confirmed from the provided data; verify the specific fix build against the Qualcomm bulletin before marking as remediated.
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Same weakness CWE-191 – Integer Underflow
View allSame technique Information Disclosure
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External POC / Exploit Code
Leaving vuln.today