UEFI variable modification via improper input validation
Published Feb 1, 2023 · Updated Mar 26, 2025
Improper input validation in Dell Client Platform BIOS allows local users with administrator privileges to modify a UEFI variable. Dell has not disclosed which firmware handler accepts the input or which validation it omits before writing the variable. Exploitation requires authenticated local administrator access and can alter firmware-managed state, with limited confidentiality and availability effects also reflected in Dell's assessment.
Summary
What happened
Improper input validation in Dell Client Platform BIOS allows local users with administrator privileges to modify a UEFI variable. Dell has not disclosed which firmware handler accepts the input or which validation it omits before writing the variable. Exploitation requires authenticated local administrator access and can alter firmware-managed state, with limited confidentiality and availability effects also reflected in Dell's assessment.
The record
- CVE
- CVE-2022-32482
- Published
- Feb 1, 2023
- Updated
- Mar 26, 2025
- Vendor
- Dell
- Product
- Dell Client Platform BIOS
- Classifications
- CWE-20, T1542.001
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Feb 1, 2023CVE publishedPublication date reported by the CVE source.
- Mar 26, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=0 <=2.15.2
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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