CVE-2026-32708
Zenoh uORB Subscriber Allows Arbitrary Stack Allocation (PX4/PX4-Autopilot)
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.
INFO
Published Date :
March 16, 2026, 2:19 p.m.
Last Modified :
March 17, 2026, 4:16 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | MITRE-CVE | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update PX4 autopilot to 1.17.0-rc2 or newer.
- Ensure Zenoh bridge task is stable.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-32708.
| URL | Resource |
|---|---|
| https://github.com/PX4/PX4-Autopilot/security/advisories/GHSA-69g4-hcqf-j45p | Exploit Vendor Advisory |
| https://github.com/PX4/PX4-Autopilot/security/advisories/GHSA-69g4-hcqf-j45p | Exploit Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-32708 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-32708
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-32708 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-32708 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Mar. 17, 2026
Action Type Old Value New Value Added Reference https://github.com/PX4/PX4-Autopilot/security/advisories/GHSA-69g4-hcqf-j45p -
Initial Analysis by [email protected]
Mar. 16, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CPE Configuration OR *cpe:2.3:a:dronecode:px4_drone_autopilot:*:*:*:*:*:*:*:* versions up to (excluding) 1.17.0 *cpe:2.3:a:dronecode:px4_drone_autopilot:1.17.0:rc1:*:*:*:*:*:* *cpe:2.3:a:dronecode:px4_drone_autopilot:1.17.0:beta1:*:*:*:*:*:* *cpe:2.3:a:dronecode:px4_drone_autopilot:1.17.0:alpha1:*:*:*:*:*:* Added Reference Type GitHub, Inc.: https://github.com/PX4/PX4-Autopilot/security/advisories/GHSA-69g4-hcqf-j45p Types: Exploit, Vendor Advisory -
New CVE Received by [email protected]
Mar. 16, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-121 Added Reference https://github.com/PX4/PX4-Autopilot/security/advisories/GHSA-69g4-hcqf-j45p