What’s Vulnerable › Vulnerabilities

CVE-2026-32706: PX4 autopilot has a global buffer overflow in crsf_rc via oversized variable-length known packet

• Severity: high (CVSS 8.1 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-120

Description

PX4 autopilot is a flight control solution for drones. Prior to 1.17.0-rc2, The crsf_rc parser accepts an oversized variable-length known packet and copies it into a fixed 64-byte global buffer without a bounds check. In deployments where crsf_rc is enabled on a CRSF serial port, an adjacent/raw-serial attacker can trigger memory corruption and crash PX4. 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

• https://github.com/PX4/PX4-Autopilot/security/advisories/GHSA-mqgj-hh4g-fg5p
• https://github.com/PX4/PX4-Autopilot/security/advisories/GHSA-mqgj-hh4g-fg5p

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