What is CVE-2021-21543?

CVE-2021-21543 is a medium-severity vulnerability in Dell Idrac9_firmware, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2021-04-30.

How severe is CVE-2021-21543?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Is CVE-2021-21543 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Dell Idrac9_firmware

CVE-2021-21543

Dell EMC iDRAC9 versions prior to 4.40.00.00 contain multiple stored cross-site scripting vulnerabilities. A remote authenticated malicious user with high privileges could potentially exploit these vulnerabilities to store malicious HTML o…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.006 (46.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

Affected products

Dell Idrac9_firmware
Dell Integrated Remote Access Controller (Idrac) — versions unspecified

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

security_alert@emc.com (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-21543?: CVE-2021-21543 is a medium-severity vulnerability in Dell Idrac9_firmware, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2021-04-30.
How severe is CVE-2021-21543?: Medium severity. CVSS v3 base score is 4.8 out of 10.
Is CVE-2021-21543 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.