What’s Vulnerable › Vulnerabilities

CVE-2023-47625: Global Buffer Overflow leading to denial of service in PX4-Autopilot

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-11-13 · updated 2026-06-17
• Weakness: CWE-120

Description

PX4 autopilot is a flight control solution for drones. In affected versions a global buffer overflow vulnerability exists in the CrsfParser_TryParseCrsfPacket function in /src/drivers/rc/crsf_rc/CrsfParser.cpp:298 due to the invalid size check. A malicious user may create an RC packet remotely and that packet goes into the device where the _rcs_buf reads. The global buffer overflow vulnerability will be triggered and the drone can behave unexpectedly. This issue has been addressed in version 1.14.0. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Affected products

• PX4-Autopilot: 1.14.0-rc2

References

• https://github.com/PX4/PX4-Autopilot/commit/d1fcd39a44e6312582c6ab02b0d5ee2599fb55aa
• https://github.com/PX4/PX4-Autopilot/security/advisories/GHSA-qpw7-65ww-wj82
• https://github.com/PX4/PX4-Autopilot/commit/d1fcd39a44e6312582c6ab02b0d5ee2599fb55aa
• https://github.com/PX4/PX4-Autopilot/security/advisories/GHSA-qpw7-65ww-wj82

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