High severity · published Jul 6, 2023
CVE-2021-46896
Buffer Overflow vulnerability in PX4-Autopilot allows attackers to cause a denial of service via handler function handling msgid 332
7.5
CVSS
0.8%
EPSS
No
On KEV
Description
Buffer Overflow vulnerability in PX4-Autopilot allows attackers to cause a denial of service via handler function handling msgid 332.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 57% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PD
Px4 Drone Autopilot · Dronecode
All versions, or not specified · source: NVD
Affected product
PD
Px4 Drone Autopilot
Dronecode
More from Px4 Drone Autopilot
9.8
CVE-2023-46256
PX4-Autopilot provides PX4 flight control solution for drones
8.1
CVE-2026-32706
PX4 autopilot has a global buffer overflow in crsf_rc via oversized variable-length known packet
8.1
CVE-2026-26742
PX4 Autopilot versions 1.12.x through 1.15.x contain a protection mechanism failure in the "Re-arm Grace Period" logic
8.1
CVE-2026-26741
PX4 Autopilot versions 1.12.x through 1.15.x contain a logic flaw in the mode switching mechanism
8.0
CVE-2026-32708
Zenoh uORB Subscriber Allows Arbitrary Stack Allocation (PX4/PX4-Autopilot)