EUVD-2026-41932
GHSA-685v-jj9g-mfg9
Severity by source
AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Local low-privileged app triggers the flaw with no user interaction (AV:L/PR:L/UI:N); firmware overflow crossing into the host OS justifies S:C with full C:H/I:H/A:H.
Primary rating from Vendor (qualcomm).
CVSS VectorVendor: qualcomm
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Lifecycle Timeline
1DescriptionCVE.org
Memory Corruption when processing invalid HT40 channel layouts during dynamic channel switching operations.
AnalysisAI
Local privilege escalation and memory corruption in Qualcomm Snapdragon WLAN firmware occurs when the driver parses malformed HT40 (40 MHz channel-bonding) layouts during dynamic channel switching, allowing a low-privileged local process to trigger a stack-based buffer overflow (CWE-121) that crosses a trust boundary (CVSS scope changed). Disclosed in the July 2026 Qualcomm security bulletin, it carries a CVSS 8.8 with full confidentiality, integrity, and availability impact. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires local access with low privileges (AV:L/PR:L) - the attacker must run code on the device (e.g., an installed app or co-resident process) and needs no user interaction (UI:N). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H yields 8.8 (High) driven by low attack complexity, low required privileges, no user interaction, a changed scope (the overflow in firmware affects components beyond the vulnerable one, e.g. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | A malicious application installed on a Snapdragon-based device, or a low-privileged local process, invokes the WLAN interface in a way that feeds a crafted invalid HT40 channel layout into the dynamic channel-switching handler, overflowing a stack buffer in firmware. Because the CVSS scope is changed, successful corruption can escalate the attacker's privileges beyond the WLAN component into the host OS, achieving code execution or device compromise. … |
| Remediation | Patch available per vendor advisory: apply the fixes published in the Qualcomm July 2026 security bulletin (https://docs.qualcomm.com/product/publicresources/securitybulletin/july-2026-bulletin.html); no single exact fix version is provided in this record, so consult the bulletin's chipset-specific version table and, for end-user devices, install the corresponding OEM Android security patch level that incorporates the Qualcomm fix. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Inventory all devices using Qualcomm Snapdragon WLAN firmware and document current firmware versions; assess business criticality and data classification of affected devices. …
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External POC / Exploit Code
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