Vulnerability · Published Mar 13, 2026 · Assigned by GitHub_M

CVE-2026-32708Zenoh uORB Subscriber Allows Arbitrary Stack Allocation (PX4/PX4-Autopilot)

High 7.8

In plain English

A high-severity stack buffer overflow in PX4-Autopilot from PX4. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities).

Severity (CVSS 3.1)7.8High

Exploit odds (30 days)0.2%top 84.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

PX4 autopilot is a flight control solution for drones. Prior to 1.17.0-rc2, the Zenoh uORB subscriber allocates a stack VLA directly from the incoming payload length without bounds. A remote Zenoh publisher can send an oversized fragmented message to force an unbounded stack allocation and copy, causing a stack overflow and crash of the Zenoh bridge task. This vulnerability is fixed in 1.17.0-rc2.

Affected products (as reported)

Vendor	Product	Versions
PX4	PX4-Autopilot	< 1.17.0-rc2

Weakness: CWE-121 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

https://github.com/PX4/PX4-Autopilot/security/advisories/GHSA-69g4-hcqf-j45p x_refsource_CONFIRM