CVE-2026-32706Public exploit

Flight-control crash via unchecked CRSF packet copy

Published Mar 13, 2026 · Updated Mar 13, 2026

Global buffer overflow in PX4 Autopilot before 1.17.0-rc2 allows physically proximate attackers to crash flight control via CRSF serial input. In CrsfParser.cpp, variable-length known packets bypass maximum-length rejection, and QueueBuffer_PeekBuffer() performs an unchecked memcpy into process_buffer[64]. Reachability requires crsf_rc on a CRSF serial port and raw serial injection; exploitation corrupts memory and crashes the PX4 process.

CVSS severity7.1
High
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Global buffer overflow in PX4 Autopilot before 1.17.0-rc2 allows physically proximate attackers to crash flight control via CRSF serial input. In CrsfParser.cpp, variable-length known packets bypass maximum-length rejection, and QueueBuffer_PeekBuffer() performs an unchecked memcpy into process_buffer[64]. Reachability requires crsf_rc on a CRSF serial port and raw serial injection; exploitation corrupts memory and crashes the PX4 process.

The record

CVE
CVE-2026-32706
Published
Mar 13, 2026
Updated
Mar 13, 2026
Vendor
PX4
Product
PX4 Autopilot
Classifications
CWE-120, CWE-787, T1499
Attack vector
adjacent
Privileges
unauthenticated

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 privilegesunauthenticated

What is affected?

PX4 · PX4 Autopilotversion=< 1.17.0-rc2

Published CVSS scores

8.1NIST NVDCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
7.1GitHub, Inc.CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CWE-787Out-of-bounds Write
T1499Endpoint Denial of Service

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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