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WatchGuard Dimension CVE-2026-78618

| EUVDEUVD-2026-67344 MEDIUM
Improper Access Control (CWE-284)
2026-08-27 WatchGuard GHSA-2xxc-598r-3hf4
Authentication Bypass Watchguard Dimension
6.9
CVSS 4.0 · Vendor: WatchGuard
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Severity by source

Vendor (WatchGuard) PRIMARY
6.9 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N/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
6.8 MEDIUM

Network-reachable admin interface (AV:N), PR:H confirmed by vendor vector; SC:L in CVSS 4.0 maps to S:C with bounded C impact; no integrity or availability impact stated.

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

Primary rating from Vendor (WatchGuard).

CVSS VectorVendor: WatchGuard

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
X

Lifecycle Timeline

2
Patch available
Aug 28, 2026 - 04:16 EUVD
Analysis Generated
Aug 28, 2026 - 02:46 vuln.today

DescriptionCVE.org

A business logic flaw in WatchGuard Dimension allows an authenticated administrator to trigger multiple backend operations within a single logical flow by sending a specially crafted request.

AnalysisAI

WatchGuard Dimension, the network security visibility and management platform, contains a business logic flaw (CWE-284) that permits an authenticated administrator to trigger multiple backend operations within a single logical request flow by sending a specially crafted HTTP request. All versions of Dimension are listed as affected via the wildcard CPE, and the impact is high confidentiality exposure on the Dimension system itself with limited subsequent-system effect. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Vulnerability AssessmentAI

Exploitation Exploitation requires existing administrator-level authentication to WatchGuard Dimension, confirmed by the CVSS 4.0 PR:H metric - no unauthenticated or low-privilege path is indicated by available data. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 score of 6.9 reflects a meaningful but operationally constrained risk: network-accessible (AV:N) with low attack complexity (AC:L) and no special attack requirements (AT:N), but requiring administrator-level credentials (PR:H). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Consult the WatchGuard PSIRT advisory at https://psirt.watchguard.com/CVE-2026-78618 for patch availability and specific fixed versions, as no exact patched release was included in the available intelligence data. … Detailed patch versions, workarounds, and compensating controls in full report.
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CVE-2026-78618 vulnerability details – vuln.today
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