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CVE-2026-85656— OS command injection in Amazon log4j-cve-2021-44228-hotpatch

Quick assessment

Affected
Amazon log4j-cve-2021-44228-hotpatch
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Amazon Linux 中 log4j-cve-2021-44228-hotpatch 包在版本 1.3-9 之前存在操作系统命令注入问题，本地用户可能通过包含嵌入式换行符的 Java 进程可执行路径，以 root 权限执行任意命令。

CVSS 7.8 · High

Affected Version Matrix 1

VendorProduct Version RangeStatus
Amazon log4j-cve-2021-44228-hotpatch < 1.3-9.amzn2 affected
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I. Basic Information for CVE-2026-85656

Vulnerability Information
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Vulnerability Title
OS command injection in Amazon log4j-cve-2021-44228-hotpatch
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Amazon log4j-cve-2021-44228-hotpatch 0 ~ 1.3-9.amzn2 -

II. Public POCs for CVE-2026-85656

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III. Intelligence Information for CVE-2026-85656

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Vendor Advisories for CVE-2026-85656 (1)

Vendor Pages for CVE-2026-85656 (1)

Same Patch Batch · Amazon · 2026-09-04 · 4 CVEs total

CVE-2026-85654 7.8 HIGH Code injection in the CDK generator in Amazon awslabs.dynamodb-mcp-server
CVE-2026-85786 7.5 HIGH Incomplete fix for CVE-2026-75936 memory-amplification denial of service in Amazon ion-jav
CVE-2026-85787 6.5 MEDIUM An incomplete list of disallowed inputs in the SQL validation component of Amazon awslabs

IV. Related Vulnerabilities

Same product: log4j-cve-2021-44228-hotpatch
Same vendor: Amazon
Same weakness: CWE-78

V. Comments for CVE-2026-85656

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