EUVD-2026-81327
GHSA-84rq-9wgr-hgx3
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local driver escape reachable by an existing low-priv process (AV:L/PR:L), deterministic OOB write with no user interaction (AC:L/UI:N), memory corruption yielding full C/I/A impact within the same component (S:U).
Primary rating from Vendor (qualcomm).
CVSS VectorVendor: qualcomm
Lifecycle Timeline
3DescriptionCVE.org
Memory corruption when processing escape handling flow with insufficient user buffer sizes.
AnalysisAI
Local privilege escalation in Qualcomm Snapdragon platforms can occur when a low-privileged local process supplies an insufficiently sized user buffer to an escape handling driver flow, producing an out-of-bounds write (CWE-787). The issue is rated 7.8 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), so an attacker who already has a foothold on the device as a low-privileged user could corrupt memory and potentially achieve code execution or elevation; authentication requirements are local low privileges per the vector, and no user interaction is required. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires local access with low privileges (AV:L/PR:L): the attacker must already run code on the device (e.g. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine local privilege-escalation risk but not a drop-everything emergency. … 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 | Patch available per vendor advisory: apply the fix referenced in Qualcomm's September 2026 security bulletin (https://docs.qualcomm.com/product/publicresources/securitybulletin/september-2026-bulletin.html). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Qualcomm Snapdragon-based assets, confirm where local low-privileged users can execute code or interact with driver flows, and verify that endpoint detection and privilege-escalation monitoring are active; note that no public exploit has been identified at time of analysis, but exposure remains until a fix is released. …
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Same weakness CWE-787 – Out-of-bounds Write
View allSame technique Buffer Overflow
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External POC / Exploit Code
Leaving vuln.today