CVE-2021-31982

HIGHNVD 8.86.3▼

8.8

Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability

CVSS v3: 8.8
EG Score: 6.3(medium)
EPSS: 88.6%
KEV: Not listed

Published

July 1, 2023

Last Modified

February 28, 2025

References (2)

secure@microsofthttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-31982
af854a3a-2127-422b-91ae-364da2661108https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-31982

Weakness Classification(1)

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

CWE-693Protection Mechanism Failure

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Microsoft MSRCCVE-2021-319822021-05-27
Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability

Data Freshness Timeline

(refreshed 10× in last 7d / 10× 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.

2026-05-27 13:39 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 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-23 09:49 UTCEG score recompute
2026-05-23 09:49 UTCVendor advisory
2026-05-23 09:49 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2021-31982?

CVE-2021-31982 is a high vulnerability published on July 1, 2023. Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability

When was CVE-2021-31982 disclosed?

CVE-2021-31982 was first published in the National Vulnerability Database on July 1, 2023, with the most recent update on February 28, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-31982 actively exploited?

CVE-2021-31982 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 88.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-31982?

CVE-2021-31982 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 6.3.

How do I remediate CVE-2021-31982?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-31982, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-31982

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Is Your Infrastructure Affected by CVE-2021-31982?

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