CVE-2021-0155

MEDIUMNVD 5.55.5—

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.

CVSS v3: 5.5
EG Score: 5.5(medium)
EPSS: 27.5%
KEV: Not listed

Published

May 12, 2022

Last Modified

May 5, 2025

References (4)

secure@intelhttps://security.netapp.com/advisory/ntap-20220818-0003/
secure@intelhttps://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00601.html
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20220818-0003/
af854a3a-2127-422b-91ae-364da2661108https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00601.html

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-252Unchecked Return Value

Data Freshness Timeline

(refreshed 10× in last 7d / 18× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-25 22:15 UTCEG score recompute
2026-05-25 22:15 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2021-0155?

CVE-2021-0155 is a medium vulnerability published on May 12, 2022. 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.

When was CVE-2021-0155 disclosed?

CVE-2021-0155 was first published in the National Vulnerability Database on May 12, 2022, with the most recent update on May 5, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-0155 actively exploited?

CVE-2021-0155 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 27.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-0155?

CVE-2021-0155 has a CVSS v3 base score of 5.5 (NVD).

How do I remediate CVE-2021-0155?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-0155, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2021-0155

📅 Published

🔄 Last Modified

🔗 References (4)