Privilege Escalation Vulnerability in Intel Microcode Package
Summary
ALPINE-CVE-2026-20716: Improper access control for some Intel(R) Processors within Ring 3: User Applications may allow an escalation of privilege. Affects intel-ucode versions < 20260812-r0. Fixed in 20260812-r0. How to fix ↓
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Background
The intel-ucode package provides microcode updates for Intel processors, enhancing system performance and security. It is essential for maintaining the integrity and efficiency of user applications running on Intel hardware. However, a recent vulnerability has been identified that could allow unauthorized access and privilege escalation, posing significant risks to system security.
Vulnerability Detail
The vulnerability, identified as CVE-2026-20716, arises from improper access control within Intel processors operating in Ring 3, which is the user application level. This flaw may allow a simple hardware adversary with authenticated user access to exploit the system through a high complexity attack. The attack can potentially escalate privileges without user interaction, leading to severe impacts on system confidentiality and integrity.
How To Fix
Minimum fixed version
20260812-r0
This is the first release that contains the fix.
sudo apk add --upgrade intel-ucodeTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
Currently, there are no specific workarounds mentioned for this vulnerability. It is recommended to apply the patch as soon as it becomes available to mitigate potential risks.
Conclusion
The CVE-2026-20716 vulnerability in the intel-ucode package poses a significant risk of privilege escalation for systems using affected Intel processors. Immediate action is required to update the package to the patched version to safeguard against potential exploits.
See every vulnerability recorded for intel-ucode →
FAQ
CVE-2026-20716 is a vulnerability in Intel processors that allows for privilege escalation due to improper access control.
You can use the Vulert platform to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected.
The vulnerability can lead to high impacts on confidentiality and integrity of the system, allowing unauthorized access to sensitive information.
Yes, a patch is available. Users should update the intel-ucode package to version 20260812-r0 to mitigate the vulnerability.
While there are no specific workarounds, it is advisable to monitor your system closely and apply the patch as soon as possible to reduce risks.
References
Related vulnerabilities
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