Improper Access Control Affecting microcode_ctl-debuginfo package, versions <2:2.1-47.amzn2.4.28


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.09% (1st percentile)

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  • Snyk IDSNYK-AMZN2-MICROCODECTLDEBUGINFO-19456652
  • published1 Sept 2026
  • disclosed11 Aug 2026

Introduced: 11 Aug 2026

CVE-2026-20716  (opens in a new tab)
CWE-284  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 microcode_ctl-debuginfo to version 2:2.1-47.amzn2.4.28 or higher.
This issue was patched in ALAS2-2026-3872.

NVD Description

Note: Versions mentioned in the description apply only to the upstream microcode_ctl-debuginfo package and not the microcode_ctl-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

Improper access control for some Intel(R) Processors within Ring 3: User Applications may allow an escalation of privilege. Simple hardware adversary with an authenticated user combined with a high complexity attack may enable escalation of privilege. This result may potentially occur via local access when attack requirements are present with special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (high), integrity (high) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.

CVSS Base Scores

version 3.1