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Vulnerability record · CVE-2021-46896 · published 6 July 2023

CVE-2021-46896: Dronecode px4 drone autopilot classic buffer overflow vulnerability

Dronecode · Px4 Drone Autopilot

Buffer Overflow vulnerability in PX4-Autopilot allows attackers to cause a denial of service via handler function handling msgid 332.

7.5 CVSS 3.1 High EPSS 0.82% · top 44.6% CWE-120 · Classic buffer overflow
7.5CVSS 3.1 base score
0.82%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

Buffer Overflow vulnerability in PX4-Autopilot allows attackers to cause a denial of service via handler function handling msgid 332.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/PX4/PX4-Autopilot/issues/18369 Exploit
https://github.com/PX4/PX4-Autopilot/issues/18369 Exploit

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-46896), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.