CVE-2026-84698CWE-787

CVE-2026-84698

Medium · published September 2, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
36.6
In the wild
Unconfirmed
What it is

PX4 Autopilot contains a heap buffer overflow vulnerability in the sd_bench command that writes a four-byte block number into a user-supplied sized allocation. Attackers can invoke sd_bench with a block size below four bytes to overflow the heap buffer and potentially execute code or crash the system.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
7.1 · CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00434 · 36.6th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2026-09-02T05:17Z
References (5)
https://github.com/PX4/PX4-Autopilot · [email protected]https://github.com/PX4/PX4-Autopilot/blob/v1.17.0/src/systemcmds/sd_bench/sd_bench.cpp · [email protected]https://github.com/PX4/PX4-Autopilot/issues/28373 · [email protected]https://www.vulncheck.com/advisories/px4-autopilot-sd-bench-heap-buffer-overflow-via-block-size · [email protected]https://github.com/PX4/PX4-Autopilot/issues/28373 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 03 SEP 03:32Z
    EPSS moved — → 0%
    epss
  • 02 SEP 00:37Z
    PX4 Autopilot sd_bench Heap Buffer Overflow via Block Size
    cvelistv5