CVE-2021-33086 Memory corruption in Intel(R) NUCs

What is CVE-2021-33086?

CVE-2021-33086 is a medium-severity memory corruption vulnerability in Intel(R) NUCs, published on 17 Nov 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Out-of-bounds write in firmware for some Intel(R) NUCs may allow an authenticated user to potentially enable denial of service via local access.

Weakness: CWE-787

Which versions are affected by CVE-2021-33086?

It affects 103 products.

Products include Intel Nuc 10 Performance Kit Nuc10i3fnh Firmware, Intel Nuc 10 Performance Kit Nuc10i3fnhf Firmware, Intel Nuc 10 Performance Kit Nuc10i3fnhfa Firmware, Intel Nuc 10 Performance Kit Nuc10i3fnhja Firmware, Intel Nuc 10 Performance Kit Nuc10i3fnk Firmware, Intel Nuc 10 Performance Kit Nuc10i5fnh Firmware and 97 more.

How do I fix CVE-2021-33086?

No fix has been published for CVE-2021-33086 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2021-33086 being exploited?

There is no known exploitation of CVE-2021-33086 in the wild and no public exploit code.

Other vulnerabilities in Intel(R) NUCs

• CVE-2022-37336 Privilege escalation in Intel(R) NUC High 7.9
• CVE-2022-36789 Privilege escalation in Intel(R) NUC 10 Performance Kits and Intel(R) NUC 10 Performance Mini PCs High 7.5
• CVE-2021-0054 Privilege escalation in Intel(R) NUCs Medium 6.7
• CVE-2021-0067 Privilege escalation in Intel(R) NUCs Medium 6.7

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-82mx-gqwp-hp24.