Use After Free in Px4 Px4-Autopilot
CVE-2026-86096
PX4 Autopilot through 1.17.0 contains a use-after-free vulnerability in TemperatureCalibration::start() due to a race condition between task spawning and object deletion. Attackers can trigger the calibration process via shell commands to write to freed heap memory, corrupting unrelated objects or allocator metadata and destabilizing heap operations.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H.
EPSS exploit prediction
EPSS: 0.003 (24.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 24.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
Weakness classification (CWE)
References
- github.com/PX4/PX4-Autopilot (product)
- github.com/PX4/PX4-Autopilot/blob/v1.17.0/src/modules/temperature_compensation/… (technical-description)
- github.com/PX4/PX4-Autopilot/commit/b182e523d154fe029a49b48bb5f9d3d6693bc6bb (patch)
- github.com/PX4/PX4-Autopilot/pull/28487 (issue-tracking, patch)
- www.vulncheck.com/advisories/px4-autopilot-through-1.17.0-use-after-free-via-te… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-86096?
- CVE-2026-86096 is a medium-severity vulnerability in Px4 Px4-Autopilot, classified under Use After Free. CVSS score: 5.9/10. Published 2026-09-04.
- How severe is CVE-2026-86096?
- Medium severity. CVSS v3 base score is 5.9 out of 10.