RCE in Amazon Log4j-Cve-2021-44228-Hotpatch

CVE-2026-85656

An OS command injection issue in the log4j-cve-2021-44228-hotpatch package in Amazon Linux before 1.3-9 might allow a local user to execute arbitrary commands with root privileges via a Java process whose executable path contains embedded newline characters.

Vulnerability class: Command Injection (OS Command Injection)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.011 (64.6th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 65th percentile — 64.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-85656: held from 0.011 to 0.011.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: -0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-85656?
CVE-2026-85656 is a high-severity vulnerability in Amazon Log4j-Cve-2021-44228-Hotpatch, classified under OS Command Injection. CVSS score: 7.8/10. Published 2026-09-04.
How severe is CVE-2026-85656?
High severity. CVSS v3 base score is 7.8 out of 10.