Exploited CVEs / SonicWall / CVE-2025-40602

CVE-2025-40602

SonicWall SMA1000 Missing Authorization Vulnerability. Exploitation in the wild is confirmed by CISA, not predicted. Federal agencies were required to remediate by 2025-12-24 (that deadline has passed); treat that date as the outer bound for your own environment. The fix is in the vendor advisory: SonicWall PSIRT Advisories, linked below.

MediumCISA KEV

Actively exploited SonicWall SMA1000 appliance vulnerability, Medium severity, CVSS 6.6. Added to the CISA KEV catalog 2025-12-17.

Senserva AI read on CVE-2025-40602CISA required actionOfficial fix for CVE-2025-40602What the press saysAdmin questions

Risk summary

CVSS base
6.6
EPSS exploit probability
1.9%
Severity
Medium
Added to KEV
2025-12-17
CISA due date
2025-12-24 (past due)
Patch now
Exploited in the wild: confirmed by the CISA KEV catalog, not predicted.
The fix ships from the vendor: SonicWall PSIRT Advisories.
Do this now: Federal remediation deadline 2025-12-24; treat it as your outer bound. Patch now and verify deployment on every exposed device.

Updated July 25, 2026. Data refreshed on every build from MSRC, CISA KEV, and FIRST EPSS.

Senserva AI Opinion for CVE-2025-40602

SonicWall SMA1000 remote access appliances contain a missing authorization flaw enabling privilege escalation in the appliance management console, rated Medium Severity at CVSS 6.6 and confirmed exploited since 2025-12-17. SMA appliances have been a recurring target for extortion-motivated intrusions, and escalation in the AMC gives an attacker durable control of the device brokering your remote access. The modest score understates its value as a chain component.

Do this: Apply the SonicWall firmware update to SMA1000 appliances and audit AMC administrator accounts for unexplained changes.

AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.

Senserva AI Opinion and rich prompt for CVE-2025-40602

Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.

Full tracking and change history for CVE-2025-40602

Published
2025-12-17
Last revised
2025-12-17
Changes tracked
1

Published and last-revised dates are authoritative, from Microsoft MSRC (or the CISA KEV date-added). Senserva additionally records day-to-day changes from 2026-07-07, refreshed several times a day; the change count reflects that forward-only tracking.

What the press says about CVE-2025-40602

Trusted-source coverage, pulled live from their own feeds.

“CVE-2026-15409, CVE-2026-15410: SonicWall SMA 1000 zero-day vulnerabilities exploited in the wild” Tenable, 2026-07-15

CISA required action

Federal (BOD 22-01) remediation due date: 2025-12-24 (past due).

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable

Official fix for CVE-2025-40602

The authoritative fix and affected-version list are published by the vendor. Find the SMA1000 appliance advisory on SonicWall PSIRT Advisories.

Common questions about CVE-2025-40602

Is CVE-2025-40602 actively exploited?

Yes. CVE-2025-40602 was added to the CISA Known Exploited Vulnerabilities (KEV) catalog on 2025-12-17, which means exploitation in the wild has been confirmed, not predicted. Its EPSS 30-day exploitation probability is 1.9%.

What is the CISA deadline and required action for CVE-2025-40602?

CISA set the federal (BOD 22-01) remediation due date at 2025-12-24, which has passed; treat any unremediated system as overdue. The verbatim required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable

What fixes CVE-2025-40602?

The authoritative fix is in the vendor advisory: see SonicWall PSIRT Advisories for the patched SMA1000 appliance versions and any workarounds. KEV listing makes this a fix-first item: patch it ahead of higher-CVSS issues nobody is exploiting.

Can I ask my own AI about CVE-2025-40602?

Yes. This page includes a free, ready-to-paste AI prompt containing CVE-2025-40602's key facts: severity, CVSS, EPSS, the KEV date, the CISA due date, and the required action. Copy it into Claude, ChatGPT, or Copilot; the data is refreshed twice a day (5 AM and 3 PM US Central).

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Lexicon: the terms on this page
CVE
Common Vulnerabilities and Exposures. A unique ID for one publicly known vulnerability, such as CVE-2025-1234.
KB
Microsoft Knowledge Base article. The identifier for a specific Microsoft update.
KEV
CISA Known Exploited Vulnerabilities. CVEs confirmed exploited in the wild. Fix these first.
CVSS
Common Vulnerability Scoring System. A standardized Severity score from 0 to 10.
EPSS
Exploit Prediction Scoring System. The probability a CVE will be exploited in the next 30 days.
MSRC
Microsoft Security Response Center. Microsoft's Patch Tuesday advisories and KB-to-CVE mapping.
NVD
National Vulnerability Database (NIST). Authoritative CVE metadata and CVSS scores.
Ransomware
The vulnerability is linked to known ransomware activity.
Reference: Microsoft CVE and vulnerability management, the full CVE-to-patch lookup ranked by real-world risk, and the Microsoft patching guide, how Intune, Windows Autopatch, Defender, and Azure Update Manager fit together.
Data notice: this page, the feeds, and the API are provided as is, for informational purposes only, without warranty of any kind. Senserva, LLC does not guarantee the accuracy, completeness, or timeliness of third-party data (MSRC, NVD, CISA KEV, EPSS) and accepts no liability for actions taken based on it; verify against the authoritative vendor advisory before acting. Built daily with Senserva Trustworthy AI. All use of this data is subject to the Senserva EULA.