CVE-2021-0155

Unchecked return value in the BIOS firmware for some Intel(R) Processors may allow a privileged...

5.5 Medium

Unchecked return value in the BIOS firmware for some Intel(R) Processors may allow a privileged user to potentially enable information disclosure via local access.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: None
Availability: None

Exploit likelihood

0.27%Down 0.6 points since May 13, 2022

What each source reports

NVD Score used 5.5

Unchecked return value in the BIOS firmware for some Intel(R) Processors may allow a privileged user to potentially enable information disclosure via local access.

Record: CVE-2021-0155
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0: 2.1 LowAV:L/AC:L/Au:N/C:P/I:N/A:N
Weakness: CWE-252
Updated: 2026-11-02

CVE List 5.5

Unchecked return value in the BIOS firmware for some Intel(R) Processors may allow a privileged user to potentially enable information disclosure via local access.

Record: CVE-2021-0155
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-252
Updated: 2026-11-02

EUVDEUVD-2021-2774 5.5

Unchecked return value in the BIOS firmware for some Intel(R) Processors may allow a privileged user to potentially enable information disclosure via local access.

Record: EUVD-2021-2774
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-4hpg-x5qx-73m8 5.5

Unchecked return value in the BIOS firmware for some Intel(R) Processors may allow a privileged...

Unchecked return value in the BIOS firmware for some Intel(R) Processors may allow a privileged user to potentially enable information disclosure via local access.

Record: GHSA-4hpg-x5qx-73m8
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-252
Updated: 2026-11-02

Affected products

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History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-0155 is a medium vulnerability (CVSS 5.5) in Intel Core I5-7640x Firmware, published May 12, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.27%, the 18th percentile. No source names a fixed version.

Attack profile

How easy it is to exploit

What an attacker can affect

Exploit likelihood

What each source reports

Affected products

History

In short

References