CVE-2026-32707: PX4 autopilot has a stack buffer overflow in tattu_can due to unbounded memcpy in frame assembly loop

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-03-16 · updated 2026-06-17
Weakness: CWE-121

Description

PX4 autopilot is a flight control solution for drones. Prior to 1.17.0-rc2, tattu_can contains an unbounded memcpy in its multi-frame assembly loop, allowing stack memory overwrite when crafted CAN frames are processed. In deployments where tattu_can is enabled and running, a CAN-injection-capable attacker can trigger a crash (DoS) and memory corruption. This vulnerability is fixed in 1.17.0-rc2.

Affected products

PX4-Autopilot: before 1.17.0; 1.17.0-alpha1, 1.17.0-beta1, 1.17.0-rc1 — fixed in 1.17.0

How to fix

Upgrade to a fixed version: PX4-Autopilot 1.17.0. Check the vendor advisory for mitigations.

References

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