How severe is CVE-2021-21564?

CVE-2021-21564 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-21564 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-21564?

CVE-2021-21564 affects Dell Openmanage Enterprise. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-21564?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-21564 published?

CVE-2021-21564 was published on 2021-08-09 and last updated on 2026-06-17.

CVE-2021-21564

CVE-2021-21564 is a critical-severity vulnerability in Dell Openmanage Enterprise with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Dell Openmanage Enterprise
Published: 2021-08-09
Last modified: 2026-06-17

Description

Dell OpenManage Enterprise versions prior to 3.6.1 contain an improper authentication vulnerability. A remote unauthenticated attacker may potentially exploit this vulnerability to hijack an elevated session or perform unauthorized actions by sending malformed data.

Frequently asked questions

What is CVE-2021-21564?: Dell OpenManage Enterprise versions prior to 3.6.1 contain an improper authentication vulnerability. A remote unauthenticated attacker may potentially exploit this vulnerability to hijack an elevated session or perform unauthorized actions by sending malformed data.
How severe is CVE-2021-21564?: CVE-2021-21564 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-21564 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-21564?: CVE-2021-21564 affects Dell Openmanage Enterprise. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-21564?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-21564 published?: CVE-2021-21564 was published on 2021-08-09 and last updated on 2026-06-17.

References

https://www.dell.com/support/kbdoc/000189673

Affected products (1)

cpe:2.3:a:dell:openmanage_enterprise:*:*:*:*:*:*:*:*

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Other CWE-287 (Improper Authentication) vulnerabilities

CVE-2026-45480 — Critical (CVSS 10.0): Improper authentication in Azure Active Directory allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-46389 — Critical (CVSS 10.0): UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed by UDS…
CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

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