CVE-2021-3632

HIGHNVD 7.57.5—

7.5

A flaw was found in Keycloak. This vulnerability allows anyone to register a new security device or key when there is not a device already registered for any user by using the WebAuthn password-less login flow.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 66.4%
KEV: Not listed

Published

August 26, 2022

Last Modified

November 21, 2024

References (10)

secalert@redhathttps://access.redhat.com/security/cve/CVE-2021-3632
secalert@redhathttps://bugzilla.redhat.com/show_bug.cgi?id=1978196
secalert@redhathttps://github.com/keycloak/keycloak/commit/65480cb5a11630909c086f79d396004499fbd1e4
secalert@redhathttps://github.com/keycloak/keycloak/pull/8203
secalert@redhathttps://issues.redhat.com/browse/KEYCLOAK-18500
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/security/cve/CVE-2021-3632
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1978196
af854a3a-2127-422b-91ae-364da2661108https://github.com/keycloak/keycloak/commit/65480cb5a11630909c086f79d396004499fbd1e4
af854a3a-2127-422b-91ae-364da2661108https://github.com/keycloak/keycloak/pull/8203
af854a3a-2127-422b-91ae-364da2661108https://issues.redhat.com/browse/KEYCLOAK-18500

Patch Availability(4)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
redhat	patch	2021-09-14	redhat
redhat	rh-sso7-keycloak-0:9.0.15-1.redhat_00002.1.el6sso	2021-09-14	redhat
redhat	rh-sso7-keycloak-0:9.0.15-1.redhat_00002.1.el7sso	2021-09-14	redhat
redhat	rh-sso7-keycloak-0:9.0.15-1.redhat_00002.1.el8sso	2021-09-14	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)

Maven(1)

Package	Vulnerable range	Fixed in	Dependents
org.keycloak:keycloak-core	1.0-alpha-1 ... 9.0.3 (128 versions)	15.1.0	—

Weakness Classification(1)

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

CWE-287Improper Authentication

All Vendor Advisories

(4)

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.

Data Freshness Timeline

(refreshed 11× in last 7d / 20× 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
2026-06-01 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
2026-05-26 07:17 UTCepss_batch
2026-05-25 16:26 UTCEG score recompute
2026-05-25 16:26 UTCVendor advisory

Frequently asked(5)

What is CVE-2021-3632?

CVE-2021-3632 is a high vulnerability published on August 26, 2022. A flaw was found in Keycloak. This vulnerability allows anyone to register a new security device or key when there is not a device already registered for any user by using the WebAuthn password-less login flow.

When was CVE-2021-3632 disclosed?

CVE-2021-3632 was first published in the National Vulnerability Database on August 26, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-3632 actively exploited?

CVE-2021-3632 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 66.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-3632?

CVE-2021-3632 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2021-3632?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-3632, 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-2021-3632

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CVE-2021-3632

Published

Last Modified

References (10)

Patch Availability(4)

Affected Packages

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-3632?

Same vendor

Same CWE

CVE-2021-3632

📅 Published

🔄 Last Modified

🔗 References (10)

Patch Availability(4)

Affected Packages

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-3632?

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References (10)

Frequently asked(5)

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