CVE-2022-32482: Dell Alienware M15 R6 Privilege Escalation

CVE-2022-32482 Overview

CVE-2022-32482 is an improper input validation vulnerability ([CWE-20]) affecting Dell BIOS across a wide range of consumer, commercial, and workstation systems. A local authenticated attacker holding administrative privileges can exploit the flaw to modify a UEFI variable. Modifying UEFI variables can affect platform configuration, boot integrity, and firmware-level security controls. The issue impacts numerous Dell product lines including Alienware, Inspiron, Latitude, OptiPlex, Precision, Vostro, and XPS systems. Dell published Security Advisory DSA-2022-326 to address the issue with updated BIOS releases.

Critical Impact
A local administrator can alter UEFI variables on affected Dell systems, potentially weakening firmware-level integrity and platform security configurations.

Affected Products

Dell Alienware (M15 R6, M15 R7) and G-series gaming systems (G3, G5, G7, G15, G16)
Dell Inspiron, Latitude, Vostro, and XPS consumer and commercial laptops
Dell OptiPlex desktops and Precision mobile and fixed workstations

Discovery Timeline

2023-02-01 - CVE-2022-32482 published to NVD
2024-11-21 - Last updated in NVD database

Technical Details for CVE-2022-32482

Vulnerability Analysis

The vulnerability resides in Dell BIOS firmware and stems from improper input validation when handling UEFI variable modification requests. UEFI variables store platform configuration data used by the firmware during boot and runtime, including Secure Boot keys, boot order, and OEM-specific settings. When input is not properly validated, an authorized administrator can influence variable contents beyond intended boundaries.

Exploitation requires local access and administrative privileges, which limits opportunistic abuse. However, post-compromise scenarios are realistic: an attacker who has already gained admin rights on a Dell endpoint may chain this flaw to establish persistence or weaken firmware-level protections. Successful modification of UEFI variables can impact boot integrity and system availability, which aligns with the high integrity and low availability impact reflected in the issued CVSS rating.

Root Cause

The root cause is classified under [CWE-20] Improper Input Validation. The affected BIOS code paths fail to sufficiently validate inputs supplied during UEFI variable operations, allowing an authenticated admin to modify variable contents in ways the firmware should reject.

Attack Vector

The attack vector is local. An attacker must already be authenticated on the target Dell system with administrator-level privileges. From that position, the attacker invokes the vulnerable BIOS interface to write a UEFI variable that should not be modifiable in that context. No user interaction is required to complete the exploitation, and no network access is needed. Refer to the Dell Security Advisory DSA-2022-326 for the precise list of affected BIOS versions and fixed releases.

// No verified public proof-of-concept code is available for CVE-2022-32482.
// See the Dell Security Advisory DSA-2022-326 for technical details.

Detection Methods for CVE-2022-32482

Indicators of Compromise

Unexpected changes to UEFI variables, including Secure Boot configuration, boot order, or OEM-defined variables on Dell systems.
BIOS or firmware setup modifications that do not correlate with authorized administrative change tickets.
Endpoints reporting BIOS versions older than the fixed releases listed in DSA-2022-326 despite patch deployment cycles.

Detection Strategies

Inventory BIOS versions across the Dell fleet and compare them against the fixed versions published in DSA-2022-326.
Monitor firmware integrity using platform attestation features such as TPM measured boot logs and Windows Device Health Attestation.
Audit administrative activity on endpoints, focusing on processes that interact with SetFirmwareEnvironmentVariable or equivalent UEFI variable APIs.

Monitoring Recommendations

Collect and centralize endpoint telemetry covering local admin logons, privilege use events, and firmware-related API calls.
Alert on tools and drivers known to read or write UEFI variables when executed outside maintenance windows.
Track BIOS update compliance as a recurring metric in vulnerability management reporting.

How to Mitigate CVE-2022-32482

Immediate Actions Required

Apply the Dell BIOS updates referenced in Dell Security Advisory DSA-2022-326 to all affected models.
Restrict local administrative privileges on Dell endpoints and enforce least-privilege policies for daily operations.
Validate that Secure Boot remains enabled and that BIOS administrator passwords are configured on managed systems.

Patch Information

Dell has released updated BIOS firmware for every affected platform listed in DSA-2022-326. Administrators should consult the advisory for the minimum fixed BIOS version corresponding to each system model and deploy updates using Dell Command | Update, Dell Client Management Pack, or organizational software distribution tooling.

Workarounds

Where immediate patching is not feasible, limit the number of accounts with local administrator rights on affected Dell systems.
Set and protect a BIOS setup password to reduce the chance of unauthorized firmware-level changes.
Enforce application allowlisting to prevent execution of unauthorized tools that interact with UEFI variables.

bash

# Example: enumerate BIOS version on a Dell endpoint (Windows)
wmic bios get smbiosbiosversion,manufacturer,version

# Example: list UEFI variables on Linux for auditing
ls -la /sys/firmware/efi/efivars/