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 or JavaScript code through multiple affected parameters. When victim users access the submitted data through their browsers, the malicious code gets executed by the web browser in the context of the vulnerable application.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.006 (49.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Dell Idrac9 Firmware
- Dell Integrated Remote Access Controller (Idrac) — versions unspecified
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.dell.com/support/kbdoc/000185293 (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.