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CVE-2023-46256

PX4-Autopilot Heap Buffer Overflow Bug

4.4 Medium

PX4-Autopilot provides PX4 flight control solution for drones. In versions 1.14.0-rc1 and prior, PX4-Autopilot has a heap buffer overflow vulnerability in the parser function due to the absence of parserbuf_index value checking. A malfunction of the sensor device can cause a heap buffer overflow with leading unexpected drone behavior. Malicious applications can exploit the vulnerability even if device sensor malfunction does not occur. Up to the maximum value of an unsigned int, bytes sized data can be written to the heap memory area. As of time of publication, no fixed version is available.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
Low
User interaction
Required

What an attacker can affect

Confidentiality
Low
Integrity
None
Availability
Low

Exploit likelihood

0.74%Up 0.7 points since Nov 1, 2023
90%50%10%1%

What each source reports

CVE List Score used 4.4

PX4-Autopilot Heap Buffer Overflow Bug

PX4-Autopilot provides PX4 flight control solution for drones. In versions 1.14.0-rc1 and prior, PX4-Autopilot has a heap buffer overflow vulnerability in the parser function due to the absence of parserbuf_index value checking. A malfunction of the sensor device can cause a heap buffer overflow with leading unexpected drone behavior. Malicious applications can exploit the vulnerability even if device sensor malfunction does not occur. Up to the maximum value of an unsigned int, bytes sized data can be written to the heap memory area. As of time of publication, no fixed version is available.

Record
CVE-2023-46256
CVSS 3.1
4.4 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:L
Weakness
CWE-122, CWE-120
Updated
2026-11-02
EUVDEUVD-2023-50483 4.4

PX4-Autopilot provides PX4 flight control solution for drones. In versions 1.14.0-rc1 and prior, PX4-Autopilot has a heap buffer overflow vulnerability in the parser function due to the absence of parserbuf_index value checking. A malfunction of the sensor device can cause a heap buffer overflow with leading unexpected drone behavior. Malicious applications can exploit the vulnerability even if device sensor malfunction does not occur. Up to the maximum value of an unsigned int, bytes sized data can be written to the heap memory area. As of time of publication, no fixed version is available.

Record
EUVD-2023-50483
CVSS 3.1
4.4 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:L
Updated
2026-11-03
NVD 4.4

PX4-Autopilot provides PX4 flight control solution for drones. In versions 1.14.0-rc1 and prior, PX4-Autopilot has a heap buffer overflow vulnerability in the parser function due to the absence of parserbuf_index value checking. A malfunction of the sensor device can cause a heap buffer overflow with leading unexpected drone behavior. Malicious applications can exploit the vulnerability even if device sensor malfunction does not occur. Up to the maximum value of an unsigned int, bytes sized data can be written to the heap memory area. As of time of publication, no fixed version is available.

Record
CVE-2023-46256
CVSS 3.1
4.4 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:L
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-120, CWE-122, CWE-787
Updated
2026-11-02
OSV 4.4

PX4-Autopilot Heap Buffer Overflow Bug

PX4-Autopilot provides PX4 flight control solution for drones. In versions 1.14.0-rc1 and prior, PX4-Autopilot has a heap buffer overflow vulnerability in the parser function due to the absence of parserbuf_index value checking. A malfunction of the sensor device can cause a heap buffer overflow with leading unexpected drone behavior. Malicious applications can exploit the vulnerability even if device sensor malfunction does not occur. Up to the maximum value of an unsigned int, bytes sized data can be written to the heap memory area. As of time of publication, no fixed version is available.

Record
CVE-2023-46256
CVSS 3.1
4.4 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:L
Weakness
CWE-120, CWE-122
Updated
2026-11-02

Affected products

History

History
RecordedChangedSources
aliases, publishedEUVD
first indexedCVE List, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-46256 is a medium vulnerability (CVSS 4.4) in Px4 Px4-autopilot, published October 31, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.74%, the 54th percentile. No source names a fixed version.

References

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