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WatchGuard Mobile VPN EUVDEUVD-2026-41460

| CVE-2026-13079 HIGH
Incorrect Permission Assignment for Critical Resource (CWE-732)
2026-07-02 WatchGuard GHSA-qgpj-9w2h-pcv3
Privilege Escalation Watchguard Microsoft Fireware Os
7.3
CVSS 4.0 · Vendor: WatchGuard
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Severity by source

Vendor (WatchGuard) PRIMARY
7.3 HIGH
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
7.0 HIGH

Local vector with an existing low-priv account (PR:L); AC:H reflects the CVSS 4.0 attack requirement (AT:P) making the primitive non-deterministic; full SYSTEM compromise yields C/I/A:H.

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

Primary rating from Vendor (WatchGuard).

CVSS VectorVendor: WatchGuard

CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

2
Analysis Generated
Jul 02, 2026 - 23:53 vuln.today
CVE Published
Jul 02, 2026 - 23:07 cve.org
HIGH 7.3

DescriptionCVE.org

A local privilege escalation vulnerability in the WatchGuard Mobile VPN with SSL client for Windows allows a local attacker to escalate their privileges to NT AUTHORITY\SYSTEM on the machine where the client is installed.

This issue affects the Mobile VPN with SSL client for Windows up to and including 2026.2.

AnalysisAI

Local privilege escalation in WatchGuard Mobile VPN with SSL client for Windows (versions up to and including 2026.2) lets an authenticated local attacker elevate from a low-privileged account to NT AUTHORITY\SYSTEM on any machine where the client is installed. The flaw is rooted in insecure permission assignment (CWE-732), and there is no public exploit identified at time of analysis, though the vendor-reported nature and full high-impact CVSS (7.3, CVSS 4.0) make it a meaningful endpoint-hardening concern.

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Obtain low-privileged local session
Delivery
Locate insecurely-permissioned client resource
Exploit
Plant attacker-controlled binary/config
Execution
SYSTEM service loads it
Persist
Execute code as NT AUTHORITY\SYSTEM
Impact
Establish persistence and disable defenses
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Vulnerability AssessmentAI

Exploitation Exploitation requires the WatchGuard Mobile VPN with SSL client for Windows (version ≤ 2026.2) to be installed on the target machine, and the attacker must already possess a low-privileged local session on that machine (CVSS PR:L) - this is not remotely reachable (AV:L). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 vector (AV:L/AC:L/AT:P/PR:L/UI:N) describes a locally exploitable issue requiring an existing low-privileged foothold (PR:L) plus a specific attack requirement (AT:P), which raises exploitation to high vulnerable-system impact (VC:H/VI:H/VA:H) - full compromise of the endpoint. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker who has already gained an ordinary user account on a Windows workstation - via phishing, a stolen credential, or a low-privilege malware foothold - leverages the insecurely-permissioned resource in the installed Mobile VPN with SSL client to have SYSTEM-level code execute their payload. Meeting the attack-requirement condition (AT:P), they obtain a SYSTEM shell and use it to disable security tooling, install persistence, and harvest credentials. …
Remediation Consult WatchGuard PSIRT advisory WGSA-2026-00027 (https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00027) and upgrade the Mobile VPN with SSL client for Windows to the fixed release identified there; no exact fixed version number was included in the provided data, so verify the target build directly from the advisory before deployment. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours: Inventory all Windows systems with WatchGuard Mobile VPN SSL client versions 2026.2 and earlier; restrict local interactive logon permissions for non-administrative users. …

Sign in for detailed remediation steps and compensating controls.

Threat intelligence, references, and detailed analysis are available after sign-in.

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EUVD-2026-41460 vulnerability details – vuln.today
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