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TI-2021-04624 Aliases CVE-2021-21539GHSA-mvg3-9cx3-qjv5

Time-of-check time-of-use race condition in Dell Integrated Dell Remote Access Controller

Priority LOW 32CWE-367Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

Dell EMC iDRAC9 versions prior to 4.40.00.00 contain a Time-of-check Time-of-use (TOCTOU) race condition vulnerability. A remote authenticated attacker could potentially exploit this vulnerability to gain elevated privileges when a user with higher privileges is simultaneously accessing iDRAC through the web interface.

Why it matters now

EPSS 0.00616 49th percentileScored 2026-11-07
Fix Fixed Integrated Dell Remote Access Controller (iDRAC) (Dell): 4.40.00.00

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
DellIntegrated Dell Remote Access Controller (iDRAC)before 4.40.00.004.40.00.00Patch availableCNA
  • Integrated Dell Remote Access Controller (iDRAC) VendorDell Affected before 4.40.00.00 Fixed in 4.40.00.00 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:dell:idrac9_firmware:*:*:*:*:*:*:*:*before 4.40.00.00VulnerableDell
  • cpe:2.3:o:dell:idrac9_firmware:*:*:*:*:*:*:*:* Versions before 4.40.00.00 Vulnerable ·Dell

Remediation

  • Fix · CNA Integrated Dell Remote Access Controller (iDRAC) (Dell) Fixed in 4.40.00.00

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Dell Integrated Dell Remote Access Controller (iDRAC) 4.40.00.00

    5 records Highest priority Priority LOW 5 LOW

    Other records, highest priority first

    • TI-2021-04625 Stack-based buffer overflow in Dell Integrated Dell Remote Access ControllerPriority LOW 38
    • TI-2021-04626 Cross-site scripting in Dell Integrated Dell Remote Access ControllerPriority LOW 29
    • TI-2021-04628 Cross-site scripting in Dell Integrated Dell Remote Access ControllerPriority LOW 23
    Show all 5 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-21539
  2. 2026-10-03 Alias added: GHSA-mvg3-9cx3-qjv5

References

Advisory 1

  • TI-2020-04396 Stack-based buffer overflow in Dell Integrated Dell Remote Access Controller CVSS 3.1CRITICAL 9.8
  • TI-2019-02726 Buffer overflow in Dell EMC iDRAC CVSS 3.1CRITICAL 9.8
  • TI-2019-02728 WS-MAN Authentication Bypass Vulnerability CVSS 3.0CRITICAL 9.8
  • TI-2019-02727 Web Interface Authentication Bypass Vulnerability CVSS 3.0CRITICAL 9.8
  • TI-2021-04623 Improper authentication in Dell Integrated Dell Remote Access Controller CVSS 3.1CRITICAL 10.0
  • TI-2018-01149 iDRAC7/iDRAC8/iDrac9 contains a command injection vulnerability in the SNMP agent. CVSS 3.0HIGH 8.8
See all 20 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences