CVE-2026-102809

PX4 Autopilot through 1.17.0 contains an uncontrolled stack allocation vulnerability in the file2 test command that fails to validate the write chunk size parameter. Attackers with shell access can supply an excessively large value to the -c option to trigger stack overflow and crash the flight controller.

CVSS 4.0

7.1CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

6.5CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.5% chance of exploitation in the next 30 days; higher than 41% of CVEs (scores of 2026-10-25)

CWE

CWE-789

Published

2026-09-29

Modified

2026-09-30

Record from

the NVD, synced 2026-10-19

References

• https://github.com/PX4/PX4-Autopilot
• https://github.com/PX4/PX4-Autopilot/blob/d6f12ad1c4f70ad3230afd7d86e971421e02fef4/src/systemcmds/tests/test_file2.c#L86-L130
• https://github.com/PX4/PX4-Autopilot/commit/46a77d8ad15e7929ef261c41083dffd1bbfa9f85
• https://github.com/PX4/PX4-Autopilot/pull/28586
• https://www.vulncheck.com/advisories/px4-autopilot-through-1.17.0-stack-exhaustion-via-tests-file2-command

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