Is CVE-2023-46256 actively exploited?

No active exploitation of CVE-2023-46256 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-46256 be exploited remotely?

Yes. CVE-2023-46256 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-46256?

CVE-2023-46256 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2023-46256

CWE-120Published: October 31, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

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.

NVD Source

Risk Analysis

PX4-Autopilot contains a heap buffer overflow vulnerability in its parser function, which can lead to unexpected drone behavior or arbitrary memory writes. This critical flaw is remotely exploitable and could be triggered by malicious applications, posing a severe safety and security risk.

There is no known public exploit, and it is not in the KEV catalog. The vulnerability is remotely exploitable with low complexity.

Recommended Action

As no fixed version is currently available, users should monitor for security advisories and patches from the PX4-Autopilot project.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-46256 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.