CVE-2026-21382
7.8Qualcomm · Snapdragon
A buffer overflow vulnerability exists in Qualcomm Snapdragon components during power management request processing due to improper input and output buffer size validation.
Executive summary
A memory corruption vulnerability in multiple Qualcomm Snapdragon hardware components allows a local authenticated attacker to achieve total system compromise.
Vulnerability
This is a classic buffer overflow (CWE-120) triggered during the handling of power management requests. The vulnerability requires the attacker to possess local low-level privileges to interact with the affected driver or interface.
Business impact
The CVSS score of 7.8 indicates a high-severity risk, particularly due to the potential for total system compromise (confidentiality, integrity, and availability). Successful exploitation could allow an attacker to execute arbitrary code with elevated privileges, potentially leading to full device takeover, unauthorized data access, or persistent system instability.
Remediation
Immediate Action: Consult the official Qualcomm April 2026 security bulletin to identify specific firmware or driver updates for your device and apply them immediately.
Proactive Monitoring: Monitor system logs for unusual crashes or service restarts related to power management or kernel-level drivers, which may indicate attempted exploitation.
Compensating Controls: Ensure that local access controls are strictly enforced, as this vulnerability requires local low-privilege access to initiate the attack.
Exploitation status
Public Exploit Available: No — there is no confirmed public exploit available.
Analyst recommendation
Given the high impact of this memory corruption flaw, organizations should prioritize the deployment of firmware updates provided by hardware manufacturers or original equipment manufacturers. Security teams should ensure that all systems utilizing the listed Snapdragon components are patched as soon as the vendor makes the relevant updates available.