CVE-2026-84698
PX4 Autopilot sd_bench Heap Buffer Overflow via Block Size
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-787 |
| Vendor | px4 |
| Product | px4-autopilot |
| Published | Sep 2, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
PX4 / PX4-Autopilot
0 ≤ 1.17.0
References
github.com: https://github.com/PX4/PX4-Autopilot github.com: https://github.com/PX4/PX4-Autopilot/issues/28373 github.com: https://github.com/PX4/PX4-Autopilot/blob/v1.17.0/src/systemcmds/sd_bench/sd_bench.cpp vulncheck.com: https://www.vulncheck.com/advisories/px4-autopilot-sd-bench-heap-buffer-overflow-via-block-size
Credits
Xiaoyang Chen