7.1

CVE-2026-84698: px4 px4-autopilot Out-of-bounds Write

CVSS: 7.1v4.0HighAwaiting analysis
Published 02-09-2026Last modified 04-09-2026
Open JSON

Vulnerability summary

CVE-2026-84698 is a high (CVSS 7.1) Out-of-bounds Write vulnerability in px4 px4-autopilot. EPSS estimates a 0.43% chance of exploitation in the next 30 days, higher than 36.5% of scored vulnerabilities.

Overall risk
28/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.1/10
010
High · v4.0 (CVE.org)
EPSS score
0.43%
0%100%
Low · +0.16 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 02-09-2026
    PublishedVulnerability first disclosed.
  2. 04-09-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

4 scores · 2 sources · 2 versions

EPSS trend

Probability

0.43%

Chance of exploitation in the next 30 days

Percentile

37%

Versus all other CVEs

30-day change

+0.16 pp

From 0.27% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.43%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Px41 product

1 vendor · 1 product

References

4 links