CVE-2026-49811

Executive Summary

CVE-2026-49811 is an Incorrect Permission Assignment for Critical Resource (CWE-732) vulnerability in Dell Command | Monitor (DCM) versions prior to 10.13.2. A low-privileged attacker with local access can exploit misconfigured resource permissions to elevate privileges on the affected host. The vulnerability carries a CVSS 3.1 base score of 8.4 (High) with a Scope change, as the impact crosses a security authority boundary.

Technical Analysis

CWE-732 (Incorrect Permission Assignment for Critical Resource) describes a class of flaws where a resource — a file, directory, registry key, service, named pipe, or shared object — is created or configured with overly permissive access controls (ACLs). In the context of a Windows endpoint management agent such as Dell Command | Monitor, such resources are typically:

• Configuration or working directories used by a SYSTEM-level service.
• Executables, DLLs, or scripts loaded by a high-privilege service.
• Named pipes or IPC endpoints used for inter-process communication between the client UI and the service.
• Registry keys or scheduled tasks invoked during service operation.

When these resources are writable or controllable by a low-privileged local user, the attacker can modify or replace a resource that is later consumed by a privileged process. This is commonly referred to as a privilege escalation via resource hijacking (DLL hijacking, executable replacement, or writable service binary path). The NVD description confirms the impact is Elevation of Privileges with a low-privileged local attacker and no user interaction required.

The CVSS vector (AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N) indicates:

• Local attack vector — the attacker must already have code execution or interactive access on the host.
• Low attack complexity — no special conditions or race windows required.
• Low privileges required — any standard user context is sufficient.
• No user interaction — no victim must open a file or click a link.
• Scope Changed — the vulnerable DCM component and the impacted security authority (typically Windows kernel/SYSTEM) are different, so the exploit crosses a privilege boundary.
• High confidentiality and integrity impact; no availability impact.

No public proof-of-concept, exploit code, or Nuclei template is available. The specific misassigned resource (exact file path, registry key, or service name) is not disclosed in the available NVD description; therefore, the attack chain below is described at the vulnerability-class level.

Exploitation Scenarios

No public PoC is available; the attack chain is inferred from the vulnerability class (CWE-732) and the stated local, low-privilege attack vector. The following steps describe how this class of flaw is typically weaponized against an endpoint management agent.

1. Reconnaissance / Target Identification. The attacker obtains a foothold on a Windows endpoint running Dell Command | Monitor prior to 10.13.2, either as a standard domain user, a local user, or via a low-privilege RCE in another application. The attacker enumerates installed Dell software (registry uninstall keys, Program Files directories, or service list) to confirm DCM presence and version. Because the attack vector is local (AV:L), network reachability of DCM is not required — the victim host itself is the target.

2. Resource Discovery. The attacker inspects the DCM installation and its associated service for critical resources with weak permissions. This includes checking ACLs on DCM configuration directories, executables, DLLs, logs, and any writable paths referenced by the DCM service. Tools such as icacls, accesschk, or PowerShell Get-Acl are used to identify resources writable by Users or Authenticated Users while the DCM service runs as LocalSystem or another privileged account.

3. Triggering the Flaw Class (CWE-732). Once a critical resource with incorrect permissions is identified, the attacker writes to or replaces that resource. Depending on the resource type, this may be a file overwrite, directory planting, or modification of a value the privileged service later reads. Because the vulnerability is an incorrect permission assignment, no memory-corruption primitive is required — the attacker simply leverages the excessive write access granted by the misconfiguration.

4. Execution / Elevation. When the DCM service (running with elevated privileges) next loads, executes, or reads the attacker-controlled resource — for example at service start, on a scheduled interval, or upon a DCM operation — the attacker's payload runs in the privileged context. This yields Elevation of Privileges up to SYSTEM, consistent with the Scope:Changed and High C/I impact in the CVSS vector.

5. Post-Exploitation Impact. With SYSTEM-level execution, the attacker can disable endpoint security controls, dump credential material (e.g., LSASS), establish persistence, and pivot laterally across the managed fleet. The absence of an availability (A:N) impact suggests the exploit need not destabilize the system to succeed.

Impact Assessment

• CVSS 3.1 Base Score: 8.4 (High) — AV:L / AC:L / PR:L / UI:N / S:C / C:H / I:H / A:N.
• Confidentiality: High — successful elevation allows access to all data readable by the privileged account, including OS secrets and credential stores.
• Integrity: High — the attacker gains the ability to modify privileged resources and system state.
• Availability: None — the flaw does not inherently cause denial of service.
• Scope: Changed — impact extends beyond the vulnerable DCM component into the Windows security authority, which is why the score is elevated despite the local vector.

Affected systems. Enterprise Windows endpoints (workstations, laptops, and potentially servers) with Dell Command | Monitor installed at versions prior to 10.13.2. DCM is commonly deployed across managed Dell fleets in enterprise environments, so the potential blast radius is any host where a non-administrative user has interactive access.

Business impact. Because exploitation yields full privilege escalation, every confidentiality and integrity control on the host can be bypassed. In managed fleets, a single low-privilege foothold can be converted into SYSTEM, facilitating credential theft, persistence, and lateral movement — a high-value outcome for ransomware and APT operators. The absence of a scorable EPSS value means exploitability in the wild has not been modeled yet, but the local, low-complexity nature means weaponization is realistic once the specific resource is identified.

Detection Guidance

Sigma Rule

title: Potential Privilege Escalation via Dell Command Monitor Resource Abuse
id: 4f1c9b2a-7d3e-4a51-9c8b-0e2d5f6a1b93
status: experimental
description: Detects suspicious writes or process activity targeting Dell Command | Monitor resources consistent with CVE-2026-49811 (CWE-732) privilege escalation.
references:
  - https://nvd.nist.gov/vuln/detail/CVE-2026-49811
author: valtersit.com
date: 2026/01/01
logsource:
  category: file_event
  product: windows
detection:
  selection_path:
    TargetFilename|contains:
      - '\Dell\Command Monitor\'
      - '\Dell\Command_Monitor\'
      - '\Program Files\Dell\Command Monitor'
  selection_writer:
    Image|endswith:
      - '\cmd.exe'
      - '\powershell.exe'
      - '\pwsh.exe'
      - '\wscript.exe'
      - '\cscript.exe'
  condition: selection_path and selection_writer
falsepositives:
  - Legitimate Dell software updates or administrative maintenance
level: high
tags:
  - attack.privilege_escalation
  - attack.t1068
  - cve.2026.49811

YARA Rule

rule CVE_2026_49811_DCM_PrivEsc_Resource_Abuse
{
    meta:
        description = "Detects potential abuse of Dell Command | Monitor resources related to CVE-2026-49811 (CWE-732 privilege escalation)"
        author = "valtersit.com"
        reference = "https://nvd.nist.gov/vuln/detail/CVE-2026-49811"
        date = "2026-01-01"
        severity = "high"

    strings:
        $dcm1 = "Command | Monitor" ascii nocase
        $dcm2 = "Dell Command" ascii nocase
        $path1 = "\\Dell\\Command Monitor" ascii nocase
        $path2 = "\\Dell\\Command_Monitor" ascii nocase
        $psex = "ImpersonateLoggedOnUser" ascii
        $token = "SeDebugPrivilege" ascii

    condition:
        uint16(0) != 0x5A4D and
        filesize < 5MB and
        (($dcm1 or $dcm2 or $path1 or $path2) and ($psex or $token))
}

Suricata IDS Rule

alert smb any any -> any any (msg:"CVE-2026-49811 Potential Dell Command Monitor Resource Tampering"; flow:to_server,established; content:"|ff|SMB"; content:"Command Monitor"; nocase; content:"WRITE"; nocase; classtype:attempted-admin; reference:cve,2026-49811; reference:url,nvd.nist.gov/vuln/detail/CVE-2026-49811; sid:202649811; rev:1;)

Elastic Detection

file where process.name in ("cmd.exe", "powershell.exe", "pwsh.exe", "wscript.exe", "cscript.exe") and
  file.path : ("*\\Dell\\Command Monitor\\*", "*\\Dell\\Command_Monitor\\*")

Splunk SPL Query

index=endpoint sourcetype="XmlWinEventLog:Microsoft-Windows-Sysmon/Operational" EventCode IN (11,1)
| search (TargetFilename="*\\Dell\\Command Monitor\\*" OR TargetFilename="*\\Dell\\Command_Monitor\\*")
| stats count min(_time) as firstTime max(_time) as lastTime values(TargetFilename) as files values(Image) as processes by ComputerName, User
| where count > 0
| table firstTime lastTime ComputerName User processes files count

Wazuh OSSEC Rule

<group name="windows,sysmon,privilege_escalation,">
  <rule id="120498" level="12">
    <if_sid>61613</if_sid>
    <field name="win.eventdata.targetFilename">(?i)\\Dell\\Command(_)?\sMonitor\\</field>
    <description>CVE-2026-49811: Potential Dell Command | Monitor resource tampering (privilege escalation)</description>
    <mitre>
      <id>T1068</id>
    </mitre>
    <group>cve_2026_49811,</group>
  </rule>
</group>

Mitigation & Patch Guidance

Patch confidence: 0/4 (UNPATCHED — no patch evidence from any tracked source; no vendor fix or workaround recorded).

1. Immediate mitigations.

   • Inventory every Windows endpoint running Dell Command | Monitor and determine the installed version; flag anything below 10.13.2.
   • Tighten ACLs on DCM-related directories, executables, and any service-referenced resources so that only SYSTEM and Administrators hold write access; remove write/Modify permissions for Users and Authenticated Users.
   • Restrict interactive local logon and limit non-administrative user sessions on hosts where DCM cannot be immediately remediated.
   • Monitor Sysmon Event ID 11 (file create) and 1 (process create) for writes to DCM paths, as provided in the detection rules above.

2. Patch / upgrade steps.

   • Apply Dell Command | Monitor 10.13.2 or later once available from Dell. Confirm the exact fixed build against the vendor advisory before deployment.
   • Validate the upgrade in a pilot ring; confirm the service restarts cleanly and that previously weak ACLs are corrected post-upgrade.
   • Where deployment cannot proceed, treat the host as trusted-boundary-compromised and apply compensating controls.

3. Long-term hardening.

   • Enforce least-privilege ACL baselines for all third-party endpoint management agents and verify them via periodic configuration audits.
   • Adopt an application allowlisting policy to block execution of unsigned binaries planted in privileged service directories.
   • Continuously monitor for CWE-732 conditions using file-integrity monitoring and access-control baseline tooling.
   • Track Dell security advisories and subscribe to NVD feeds for DCM to receive patch notifications promptly.

References

• NVD — CVE-2026-49811: https://nvd.nist.gov/vuln/detail/CVE-2026-49811
• CWE-732 — Incorrect Permission Assignment for Critical Resource: https://cwe.mitre.org/data/definitions/732.html
• Dell Security Advisories (Dell Command | Monitor): https://www.dell.com/support/security
• MITRE ATT&CK T1068 — Exploitation for Privilege Escalation: https://attack.mitre.org/techniques/T1068/
• CISA Known Exploited Vulnerabilities Catalog (CVE-2026-49811 not listed as of this report): https://www.cisa.gov/known-exploited-vulnerabilities-catalog

No public PoC, exploit code, Nuclei template, or exploit-in-the-wild evidence is currently available for CVE-2026-49811. No known threat actor campaign has been associated with this CVE to date.