CVE-2026-32708Public exploit

Zenoh bridge crash via unchecked payload length

Published Mar 13, 2026 · Updated Mar 13, 2026

Stack-based buffer overflow in PX4 Autopilot before 1.17.0-rc2 allows remote attackers to crash the Zenoh bridge task. The data_handler path in uorb_subscriber.hpp sizes a stack VLA from an unbounded fragmented-message length and copies the entire payload into it. Exploitation requires access as a publisher to an adjacent Zenoh network and a firmware build containing the Zenoh module; the demonstrated consequence is a bridge-task crash.

CVSS severity7.8
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in PX4 Autopilot before 1.17.0-rc2 allows remote attackers to crash the Zenoh bridge task. The data_handler path in uorb_subscriber.hpp sizes a stack VLA from an unbounded fragmented-message length and copies the entire payload into it. Exploitation requires access as a publisher to an adjacent Zenoh network and a firmware build containing the Zenoh module; the demonstrated consequence is a bridge-task crash.

The record

CVE
CVE-2026-32708
Published
Mar 13, 2026
Updated
Mar 13, 2026
Vendor
PX4
Product
PX4 Autopilot
Classifications
CWE-121, T1499.004
Attack vector
adjacent
Privileges
Unavailable

Timeline

How it unfolded

  1. Mar 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.17.0-rc2

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesUnavailable in this record.

What is affected?

PX4 · PX4 Autopilotversion=< 1.17.0-rc2

Published CVSS scores

7.8GitHub, Inc.CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.0NIST NVDCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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