EUVD-2026-81320
GHSA-grw7-gh8c-69m9
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local low-priv app triggers an OOB write with no user interaction; controlled memory corruption yields full C/I/A within the same privileged component, so S:U.
Primary rating from Vendor (qualcomm).
CVSS VectorVendor: qualcomm
Lifecycle Timeline
3DescriptionCVE.org
Memory corruption when processing decode statistics due to insufficient validation of offset against structure size.
AnalysisAI
Memory corruption in the Qualcomm Snapdragon decode-statistics processing path allows a locally present, low-privilege attacker - typically a malicious or compromised app that already runs on the device - to trigger an out-of-bounds write by supplying an offset that is not validated against the target structure's size, potentially achieving code execution with high confidentiality and integrity impact (CVSS 7.8, AV:L/PR:L/UI:N). Exploitation is bounded: it requires an existing local foothold, targets only the Snapdragon SKUs and firmware/driver builds that embed the vulnerable routine, and reliable escalation depends on memory-layout grooming. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires the attacker to already have local, low-privilege code execution on a Qualcomm Snapdragon-based device (AV:L, PR:L) - typically a malicious or compromised app - and to reach the specific code path that processes decode statistics, supplying an offset that is not validated against the target structure size. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a legitimate but bounded priority. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | The primary fix is the Qualcomm correction released in the September 2026 Product Security Bulletin (https://docs.qualcomm.com/product/publicresources/securitybulletin/september-2026-bulletin.html); because this is Snapdragon firmware/driver code, there is no directly user-installable binary - remediation arrives as an OEM firmware/system update, so the actionable step is to identify affected devices against the bulletin's chipset list and apply the corresponding OEM build as soon as it ships, tracking each vendor's security-update page for availability. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, confirm which managed device models and firmware baselines in the fleet use affected Snapdragon SoCs, direct the mobile/endpoint team to open a case with Qualcomm and each OEM for the September 2026 security bulletin fix and its applicability to our specific SKUs, and re-verify that mobile threat defense, app-store-only installation policies, and sideloading restrictions are enforced. …
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External POC / Exploit Code
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