CVE-2026-32708

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

HIGH
8
CVSS Score
Published: March 13, 2026 at 09:18 PM UTC
Updated: June 17, 2026 at 10:36 AM UTC
2 products affected across 2 vendorsPX4 Drone AutopilotPX4-Autopilot

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Severity
HIGH8
Exploit prediction
EPSS 0.3%
SSVC
PoC

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Affected range stops below 1.17.0, so it looks safe — our inference, not a vendor statement
v < 1.17.0-rc2
Affected range stops below 1.17.0-rc2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

x_refsource_CONFIRMExploitVendor Advisory
Source: cverecord
https://github.com/PX4/PX4-Autopilot/security/advisories/GHSA-69g4-hcqf-j45p

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-121

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