CVE-2021-21539

HIGH
7.1
CVSS Score
Published: April 30, 2021 at 08:55 PM UTC
Updated: June 17, 2026 at 03:35 AM UTC
2 products affected across 1 vendorIDRAC9 FirmwareIntegrated Dell Remote Access Controller (iDRAC)

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Severity
HIGH7.1
Exploit prediction
EPSS 0.6%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 4.40.00.00
Affected range stops below 4.40.00.00, so it looks safe — our inference, not a vendor statement
v < 4.40.00.00
Affected range stops below 4.40.00.00, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

CVSS

Attack Vector
NETWORK
Complexity
HIGH
Privileges
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-367

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