CVE-2026-86096: Use-After-Free (CVSS 5.9)

Description

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.

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CVSS v3.1 Score

5.9

MEDIUM

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H

EPSS — Exploit Prediction

0.0022

Probability of exploitation

0.12%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-416 Use After Free

References

Other References

https://github.com/PX4/PX4-Autopilot https://github.com/PX4/PX4-Autopilot/blob/v1.17.0/src/modules/temperature_compensation/temperature_calibration/task.cpp https://github.com/PX4/PX4-Autopilot/commit/b182e523d154fe029a49b48bb5f9d3d6693bc6bb https://github.com/PX4/PX4-Autopilot/pull/28487 https://www.vulncheck.com/advisories/px4-autopilot-through-1.17.0-use-after-free-via-temperature-calibration-task-startup

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 5.9 (MEDIUM).

How severe is CVE-2026-86096? +

CVE-2026-86096 has a CVSS v3.1 score of 5.9 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0022, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-86096? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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