Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
User-space process must issue crafted firmware commands (AV:L, PR:L); specific invalid index conditions required (AC:H); firmware boundary crossing with partial cross-component impact supports S:C and C:L/I:L/A:L.
Primary rating from Vendor (qualcomm).
CVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Lifecycle Timeline
1DescriptionNVD
Memory Corruption when updating prepared commands with invalid port indices based on user space input exceeds supported read client limits.
AnalysisAI
Memory corruption in Qualcomm Snapdragon firmware triggers an out-of-bounds write (CWE-787) when prepared commands are updated using invalid port indices supplied from user space that exceed supported read client limits. The vulnerability spans an exceptionally broad portfolio of Snapdragon chipsets covering mobile, automotive, XR/AR, and connectivity platforms. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires local code execution on the affected device with at least low-privilege user-space access capable of issuing prepared commands to the vulnerable firmware interface (e.g., via a kernel driver or HAL service). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The NVD CVSS 3.1 score of 5.3 Medium with vector AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L reflects a constrained but noteworthy risk profile. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | A malicious or compromised low-privilege application running on an affected Snapdragon device submits a prepared command to the relevant firmware interface with a crafted port index value exceeding the supported read client limits. The firmware fails to validate the index before writing to memory, triggering an out-of-bounds write that corrupts data in an adjacent firmware component - potentially enabling limited information disclosure, data manipulation, or stability impact across a scope boundary. … |
| Remediation | Apply the firmware patches distributed through Qualcomm's July 2026 Security Bulletin at https://docs.qualcomm.com/product/publicresources/securitybulletin/july-2026-bulletin.html. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-787 – Out-of-bounds Write
View allSame technique Memory Corruption
View allShare
External POC / Exploit Code
Leaving vuln.today
EUVD-2026-41931
GHSA-wj36-3pgh-3jfq