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Alienware Command Center EUVDEUVD-2026-115455

| CVE-2026-91900 MEDIUM
Improper Authorization in Handler for Custom URL Scheme (CWE-939)
2026-11-02 security_alert@emc.com GHSA-xjff-72j6-f43p
5.8
CVSS 3.1 · Vendor: emc
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Craft malicious custom-scheme URL
  2. Delivery
    Deliver via phishing email or web page
  3. Exploit
    Victim activates link in AWCC handler
  4. Execution
    Improper authorization check bypassed
  5. Impact
    Command execution on host

Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V4 - API and Web Service Improper authorization in handler
Exploitation Conditions

Exploitation requires that Dell Alienware Command Center (version up to and including 6.14.20.0) be installed on the target and that the victim actively open or activate a crafted link using AWCC's registered custom URL scheme - the handler for that scheme performs improper authorization (CWE-939). No authentication is required (PR:N), but user interaction is mandatory (UI:R): the attack cannot proceed unless a user clicks or otherwise invokes the malicious URL, typically delivered via phishing or a malicious web page. High attack complexity (AC:H) indicates additional conditions beyond a single crafted request must be met, which, together with the user-interaction requirement and the need for the affected AWCC version to be present, meaningfully limits real-world exploitability.

Impact

This is a medium-severity issue (CVSS 5.8) whose real-world risk is tempered by its own attack mechanics rather than inflated by them. The CVSS vector CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:L shows a network-reachable, unauthenticated flaw (PR:N) but one gated by high attack complexity (AC:H) and required user interaction (UI:R), with only Low confidentiality, integrity, and availability impact. The alarming description wording ('Command execution … Remote execution') therefore overstates the measured impact, which the vendor rated as Low across all three dimensions. No EPSS score is present in the input, so exploitation probability cannot be quantified; there is no CISA KEV listing and no public PoC or exploit reference (the single reference is the Dell advisory), so exploitation status is 'no public exploit identified at time of analysis.' The vuln.today decision label is 'this_month,' consistent with a patch-on-normal-cycle priority rather than an emergency. Net: a genuine authorization flaw worth patching in the regular cycle, but not an active-exploitation fire drill - the AC:H plus UI:R combination makes reliable, at-scale exploitation unlikely. Missing data to note explicitly: no EPSS, no KEV confirmation, and no independent PoC, so the probability-of-exploitation dimension is unverified.

Exploit ScenarioDerived

An attacker crafts a malicious link using Alienware Command Center's custom URL scheme and plants it in a phishing email or booby-trapped web page. When a victim who has AWCC (version ≤ 6.14.20.0) installed activates the link, the handler's improper authorization (CWE-939) lets the attacker-supplied request be processed, enabling command execution or phishing redirection. No public exploit has been identified, and the high attack complexity plus required user interaction make reliable exploitation difficult.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Nov 02, 2026

Improper authorization in the custom URL scheme handler of Dell Alienware Command Center (versions up to and including 6.14.20.0) allows a remote, unauthenticated attacker to abuse the registered handler to reach command execution, launch phishing content, and carry out remote execution - but only if the victim actively opens a crafted link. Dell rates the issue CVSS 5.8 (AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:L): no credentials are needed, yet mandatory user interaction and additional conditions beyond a single request sharply constrain practical exploitation. No public exploit code was identified at time of analysis and the issue is not in CISA KEV; the vendor's priority guidance places remediation in the this-month window rather than immediate action.

RemediationAI

Dell addresses this through the security update published as DSA-2026-429 (https://www.dell.com/support/kbdoc/en-us/000512248/dsa-2026-429-security-update-for-dell-alienware-command-center-6-x-for-multiple-vulnerabilities); the available data does not list a specific fixed build number, so treat the advisory as the authoritative source and upgrade AWCC to the first release Dell lists as remediated, driving any installation at or below 6.14.20.0 to that build. No vendor-published workaround is recorded in the supplied sources, and none of the following is a vendor-documented fix: because the only trigger is a user opening a crafted link against the registered custom URL scheme, exposure can be reduced on systems that do not require the feature by unregistering or blocking the AWCC scheme handler at the OS level - with the trade-off that AWCC deep-linking and companion-app launch features stop working - and by removing AWCC entirely from hosts where the command center is not operationally needed. Supplement the upgrade with user-facing guidance against opening unsolicited links, since UI:R is the one prerequisite the attacker cannot satisfy alone.

Affected VersionsENISA

Alienware Command Center (AWCC) 0 <6.14.54.0

Affected Packages

euvd alienware_command_center_awcc fix: 6.14.54.0

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The flaw is classified CWE-939, Improper Authorization in Handler for Custom URL Scheme. AWCC registers a proprietary URL scheme with the operating system; when a user opens a link using that scheme - from a web page, chat message, email, or document - the OS hands the full URL, including attacker-controlled parameters, to the AWCC handler. The handler fails to validate that the caller or the request is authorized before acting on those parameters, so crafted input can be routed into functionality the requester should not be able to reach. The CVSS vector confirms network reachability and a scope change (S:C), meaning the impact can cross from the AWCC component into the surrounding host, while confidentiality, integrity and availability impacts are each rated low. AC:H indicates that conditions beyond a single crafted request must align for exploitation to succeed, and UI:R confirms the attacker cannot trigger the vulnerable path independently - the user must click or otherwise invoke the malicious URL. The precise mechanism by which handler input reaches command execution is not described in the available sources; the stated consequences (command execution, phishing launch, remote execution) come from the vendor description and should be scoped to the low CIA ratings in the assessed vector.

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Severity by source

Vendor (emc) PRIMARY 5.8 MEDIUM
AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:L
vuln.today AI 5.8 MEDIUM

Malicious URL is delivered remotely (AV:N) but needs the user to activate it (UI:R) and satisfy handler-specific conditions (AC:H) with no auth (PR:N); the scheme handler affects resources beyond the app (S:C), with Low impacts matching the vendor rating.

3.1 AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:L
4.0 AV:N/AC:H/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

Primary rating from Vendor (emc).

CVSS VectorVendor: emc

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
Low

Lifecycle Timeline

1
Patch available
Nov 02, 2026 - 21:18 EUVD

DescriptionCVE.org

Dell Alienware Command Center (AWCC), version(s) Versions up to and including 6.14.20.0, contain(s) an Improper Authorization in Handler for Custom URL Scheme vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Command execution, Launch of phishing attacks, and Remote execution.

Threat Intelligence Overview

EPSS Score
0.3%
Top 83% exploitable
Prevalence
Low
consumer gaming utility bundled on Alienware/Dell gaming PCs, limited enterprise footprint
Data Quality
5 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.3%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact· derived
Medium
Technical Impact
Total

Priority Score

29
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +29
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

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