CVE-2023-47625Public exploit

Flight-control interruption via unchecked CRSF packet length

Published Nov 13, 2023 · Updated Sep 3, 2024

Buffer overflow in the CRSF parser in PX4 Autopilot before 1.14.0 allows attackers to interrupt flight control via a crafted RC packet. For an unknown packet type with length 62, CrsfParser_TryParseCrsfPacket omits header and CRC bytes from its bounds calculation, then copies 67 bytes into the 64-byte process_buffer. The CRSF driver must be enabled and receive the packet; the demonstrated result is memory corruption and a PX4 process abort in SITL.

CVSS severity2.9
Low
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in the CRSF parser in PX4 Autopilot before 1.14.0 allows attackers to interrupt flight control via a crafted RC packet. For an unknown packet type with length 62, CrsfParser_TryParseCrsfPacket omits header and CRC bytes from its bounds calculation, then copies 67 bytes into the 64-byte process_buffer. The CRSF driver must be enabled and receive the packet; the demonstrated result is memory corruption and a PX4 process abort in SITL.

The record

CVE
CVE-2023-47625
Published
Nov 13, 2023
Updated
Sep 3, 2024
Vendor
PX4
Product
PX4 Autopilot
Classifications
CWE-120, T0814
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 13, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 3, 2024Record 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=0 <1.14.0
  2. Affected versionversion=< 1.14.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

PX4 · PX4 Autopilotversion=0 <1.14.0; version=< 1.14.0

Published CVSS scores

2.9GitHub CNACVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T0814Denial of Service

Public exploit references

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Technologies

Your stack

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Your stack

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