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VulnerabilityPublished Updated

CVE-2026-32705: PX4-Autopilot · Stack-based Buffer Overflow

Affects PX4-AutopilotSource CVE Database V5

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Not known to be exploited · CVSS 6.8 Medium : upgrade to 1.17.0-rc2 when convenient.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 3.1 base score
6.8Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 20% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.17.0-rc2
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 13 Mar 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Upgrade PX4-Autopilot to 1.17.0-rc2.

Affected software

ProductAffectedFixed in
PX4PX4-AutopilotAffected
  • <1.17.0-rc2
Fixed in
  • 1.17.0-rc2
GitHubpx4/PX4-Autopilotpkg:github/px4/PX4-AutopilotOther threatsAffected
  • =1.17.0-rc2
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

To mitigate CVE-2026-32705, organizations should immediately update PX4-Autopilot to version 1.17.0-rc2 or later, where the vulnerability is patched. Beyond patching, implement strict validation and filtering of telemetry data from BST devices to ensure length fields are within expected bounds before processing. Limit access to the BST telemetry interface by network segmentation or physical controls to prevent unauthorized devices from connecting. Employ runtime protections such as stack canaries and address space layout randomization (ASLR) where supported by the PX4 platform to reduce exploitation success. Regularly audit and monitor drone telemetry logs for anomalous device behavior or unexpected telemetry lengths. For deployments in sensitive environments, consider additional hardware authentication mechanisms for telemetry devices to prevent malicious device spoofing. Finally, maintain an incident response plan tailored to drone control system compromises.

Description

PX4 autopilot is a flight control solution for drones. Prior to 1.17.0-rc2, the BST telemetry probe writes a string terminator using a device-provided length without bounds. A malicious BST device can report an oversized dev_name_len, causing a stack overflow in the driver and crashing the task (or enabling code execution). This vulnerability is fixed in 1.17.0-rc2.

References

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