Buffer overflow in Px4 Px4-Autopilot
CVE-2026-84698
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.
Vulnerability class: Buffer Overflow
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
Weakness classification (CWE)
References
- disclosure@vulncheck.com (product)
- disclosure@vulncheck.com (technical-description)
- disclosure@vulncheck.com (issue-tracking)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2026-84698?
- CVE-2026-84698 is a medium-severity vulnerability in Px4 Px4-Autopilot, classified under Out-of-bounds Write. CVSS score: 6.5/10. Published 2026-09-02.
- How severe is CVE-2026-84698?
- Medium severity. CVSS v3 base score is 6.5 out of 10.