CVE-2026-84698

Description

PX4 Autopilot contains a heap buffer overflow vulnerability in the sd_bench command that writes a four-byte block number into a user-supplied sized allocation. Attackers can invoke sd_bench with a block size below four bytes to overflow the heap buffer and potentially execute code or crash the system.

CVSS Vector

References

• https://github.com/PX4/PX4-Autopilot
• https://github.com/PX4/PX4-Autopilot/blob/v1.17.0/src/systemcmds/sd_bench/sd_bench.cpp
• https://github.com/PX4/PX4-Autopilot/issues/28373
• https://www.vulncheck.com/advisories/px4-autopilot-sd-bench-heap-buffer-overflow-via-block-size