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Home > Cybersecurity > Intel firmware has many vulnerabilities; patch them immediately

Intel firmware has many vulnerabilities; patch them immediately

Intel has disclosed a bunch of vulnerability issues on the firmware of its products, including CPUs, SSDs, BIOS firmware, and other software.


Rusen Gobel Rusen Gobel
May 17, 2022
2 min read

Many years after the Spectre and Meltdown vulnerabilities on its CPUs, Intel is once again facing some vulnerability issues on a variety of its products. Furthermore, some of the disclosed vulnerabilities are based on Spectre and Meltdown vulnerability families. It is quite interesting seeing them around after 4 years.

Self-fix for speculative execution bugs

One of the vulnerabilities on Intel products, which can be tracked as CVE-2021-33149, allows information disclosure and has a severity score of 2.5. This vulnerability is related to Spectre and Meltdown families. Since it requires an authorized user to access the hardware locally, its severity score is low. To fix this issue, Intel recommends adding an LFENCE instruction after loads that should observe writes from another thread to the same shared memory address.

CVE-2021-0154, CVE-2021-0153, CVE-2021-33123, and CVE-2021-0190 all have a severity score of 8.2. The first two vulnerabilities allow escalation of privileges for the users who already have privileges. The latter two causes improper access control and uncaught exceptions in the BIOS firmware, respectively.

CVE-2021-33122 causes insufficient control flow management, CVE-2021-0189 out-of-range pointer offset, CVE-2021-33124 unintended intermediary, and CVE-2021-0159 improper input validation in BIOS firmware. Those vulnerabilities have CVSS scores between 7.4 and 7.9.

Optane SSDs are affected as well

Aside from CPUs and BIOS firmware, Intel’s SSD products are also affected by some vulnerabilities. CVE-2021-33078 affects Intel’s SSD products (Optane SSD and Optane SSD Data Center) with a severity score of 7.9, allowing privileged users denial-of-service due to a race-condition bug. CVE-2021-33077 allows escalation of privileges for the unprivileged users who have physical access, and CVE-2021-33080 allows disclosure of sensitive information alongside the escalation of privileges. Those two have both have a severity score of 7.3.

There are also bugs affecting NUC devices as well, which have 7.5 severity scores. The systems with Intel hardware and software (Extreme Tuning Utility and Advisor) should be patched immediately when the fixes arrive. So, it is better to keep an eye on the updates.

See more Cybersecurity News

A comprehensive guide to understanding Cybersecurity: What is Cybersecurity?


Tags: Intel
Rusen Gobel

Rusen Gobel

Rusen Gobel is the managing editor of Cloud7. With more than 10 years of experience, Rusen worked as a hardware and software news editor for technology sites such as ShiftDelete, Teknokulis, Hardware Plus, BT Haber. In addition, Rusen publishes consumer product reviews on his YouTube channel. While consumer electronics has been his main focus for years, now Rusen is more interested in WordPress and software development. He had contributed different web application projects in his professional career. Rusen had graduated from Istanbul University, department of Computer Engineering. Rusen has a very high passion for learning and writing for every kind of technology. That's why he has been working as a tech editor for more than ten years on several different technology magazines and online news portals.

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