CVE-2026-21372: qualcomm, inc. snapdragon Heap-based Buffer Overflow

Vulnerability summary

CVE-2026-21372 is a high (CVSS 7.8) Heap-based Buffer Overflow vulnerability in qualcomm, inc. snapdragon. EPSS estimates a 0.10% chance of exploitation in the next 30 days, higher than 0.6% of scored vulnerabilities.

Timeline

1. 06-04-2026
   PublishedVulnerability first disclosed.
2. 07-04-2026
   Last modifiedVulnerability information updated.

Description

Memory Corruption when sending IOCTL requests with invalid buffer sizes during memcpy operations.

• CWE-122Heap-based Buffer OverflowA heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().