How severe is CVE-2021-21544?

CVE-2021-21544 has a CVSS 3.x base score of 2.7, rated low severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2021-21544 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-21544?

CVE-2021-21544 affects Dell Idrac9 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-21544?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-21544 published?

CVE-2021-21544 was published on 2021-04-30 and last updated on 2026-06-17.

CVE-2021-21544

CVE-2021-21544 is a low-severity vulnerability in Dell Idrac9 Firmware with a CVSS 3.x base score of 2.7. 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: Low (CVSS 3.x base score 2.7)
CVSS v2: 4.0
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Dell Idrac9 Firmware
Published: 2021-04-30
Last modified: 2026-06-17

Description

Dell EMC iDRAC9 versions prior to 4.40.00.00 contain an improper authentication vulnerability. A remote authenticated malicious user with high privileges could potentially exploit this vulnerability to manipulate the username field under the comment section and set the value to any user.

Frequently asked questions

What is CVE-2021-21544?: Dell EMC iDRAC9 versions prior to 4.40.00.00 contain an improper authentication vulnerability. A remote authenticated malicious user with high privileges could potentially exploit this vulnerability to manipulate the username field under the comment section and set the value to any user.
How severe is CVE-2021-21544?: CVE-2021-21544 has a CVSS 3.x base score of 2.7, rated low severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2021-21544 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-21544?: CVE-2021-21544 affects Dell Idrac9 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-21544?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-21544 published?: CVE-2021-21544 was published on 2021-04-30 and last updated on 2026-06-17.

References

https://www.dell.com/support/kbdoc/000185293

Affected products (1)

cpe:2.3:o:dell:idrac9_firmware:*:*:*:*:*:*:*:*

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Other CWE-287 (Improper Authentication) vulnerabilities

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