CVE-2021-21573
HIGH
7.5
CVSS Score
Published: June 24, 2021 at 05:00 PM UTC
Updated: June 17, 2026 at 03:35 AM UTC
257 products affected across 1 vendorLatitude 9410 FirmwareLatitude 5411 FirmwareLatitude 5511 Firmware
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Severity
HIGH7.5
Exploit prediction
EPSS 0.3%
Description
Dell BIOSConnect feature contains a buffer overflow vulnerability. An authenticated malicious admin user with local access to the system may potentially exploit this vulnerability to run arbitrary code and bypass UEFI restrictions.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 1.3.3
Affected range stops below 1.3.3, so it looks safe — our inference, not a vendor statement
v < 1.4.1
Affected range stops below 1.4.1, so it looks safe — our inference, not a vendor statement
dell-chengming-3990 (same device)
v < 1.4.1
Affected range stops below 1.4.1, so it looks safe — our inference, not a vendor statement
v < 1.4.0
Affected range stops below 1.4.0, so it looks safe — our inference, not a vendor statement
dell-g15-5510 (same device)
v < 1.3.3
Affected range stops below 1.3.3, so it looks safe — our inference, not a vendor statement
v ≤ 1.9.0
v < 1.9.0
Affected range stops below 1.9.0, so it looks safe — our inference, not a vendor statement
v < 1.9.0
Affected range stops below 1.9.0, so it looks safe — our inference, not a vendor statement
v < 1.9.0
Affected range stops below 1.9.0, so it looks safe — our inference, not a vendor statement
v < 2.1.0_a06
Affected range stops below 2.1.0_a06, so it looks safe — our inference, not a vendor statement
dell-inspiron-14-5418 (same device)
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.dell.com/support/kbdoc/en-us/000188682CVSS
- Attack Vector
- LOCAL
- Complexity
- HIGH
- Privileges
- HIGH
- User Interaction
- NONE
- Scope
- CHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-121CWE-787
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