Use After Free in Px4 Px4-Autopilot
CVE-2026-86713
PX4 Autopilot through 1.17.0 contains a use-after-free vulnerability in the load_mon module's stop path where exit_and_cleanup() deletes the LoadMon object and frees the performance counter before perf_end() attempts to access it. Attackers can trigger this vulnerability by issuing the load_mon stop command from any PXH or MAVLink shell, causing reads and writes through freed memory that corrupt heap objects and destabilize the flight stack.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H.
EPSS exploit prediction
EPSS: 0.004 (31.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
Weakness classification (CWE)
References
- github.com/PX4/PX4-Autopilot/pull/28544 (issue-tracking, patch)
- github.com/PX4/PX4-Autopilot/commit/354823e2efd8dd7ac47f4b8984b8e0fb06dc3b79 (patch)
- github.com/PX4/PX4-Autopilot (product)
- github.com/PX4/PX4-Autopilot/blob/v1.17.0/src/modules/load_mon/LoadMon.cpp (technical-description)
- www.vulncheck.com/advisories/px4-autopilot-through-1.17.0-use-after-free-in-loa… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-86713?
- CVE-2026-86713 is a high-severity vulnerability in Px4 Px4-Autopilot, classified under Use After Free. CVSS score: 7.1/10. Published 2026-09-08.
- How severe is CVE-2026-86713?
- High severity. CVSS v3 base score is 7.1 out of 10.