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WatchGuard Dimension CVE-2026-86135

| EUVDEUVD-2026-72790 HIGH
Cross-Site Request Forgery (CSRF) (CWE-352)
2026-09-08 WatchGuard GHSA-c94r-j35f-q2pr
7.0
CVSS 4.0 · Vendor: WatchGuard
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Severity by source

Vendor (WatchGuard) PRIMARY
7.0 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:H/SC:N/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
7.1 HIGH

Attacker needs no privileges; victim admin interaction (UI:R) required; no confidentiality impact; high availability impact from storage exhaustion via forced snapshots.

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

Primary rating from Vendor (WatchGuard).

CVSS VectorVendor: WatchGuard

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

Lifecycle Timeline

3
Patch available
Sep 08, 2026 - 15:02 EUVD
Analysis Generated
Sep 08, 2026 - 14:51 vuln.today
CVE Published
Sep 08, 2026 - 14:00 cve.org
HIGH 7.0

DescriptionCVE.org

A Cross-Site Request Forgery (CSRF) vulnerability in WatchGuard Dimension's database snapshot creation feature allows a remote attacker to trigger unauthorized snapshot creation by tricking an authenticated administrator into visiting a specially crafted web page.

AnalysisAI

Cross-site request forgery in WatchGuard Dimension's database snapshot creation endpoint allows a remote unauthenticated attacker to trigger unauthorized snapshot operations by luring an authenticated Dimension administrator to visit a malicious web page. The primary risk is availability degradation: repeated forced snapshot creation can exhaust storage or impose significant I/O load on the Dimension appliance (VA:H per CVSS 4.0). …

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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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Persist
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Impact
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Vulnerability AssessmentAI

Exploitation The victim must be an authenticated WatchGuard Dimension administrator with an active browser session at the time of exploitation. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 score of 7.0 reflects a high availability impact (VA:H) combined with low integrity impact (VI:L) and no confidentiality impact, with UI:A (active user interaction) required. … 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-2026-86135 for the official patch release. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: notify all WatchGuard Dimension administrators about this vulnerability and instruct them to avoid clicking suspicious links; review recent snapshot creation logs for anomalous activity. …

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

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CVE-2026-86135 vulnerability details – vuln.today

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