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.

Risk summary

MediumCISA KEV

6.6

CVSS base

2.0%

EPSS exploit probability

Medium

Severity

2025-12-17

Added to KEV

2025-12-24 (past due)

CISA due date

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-2025-40602 CISA required action Official fix for CVE-2025-40602 Admin questions

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.

I run IT security. Facts for CVE-2025-40602, an actively exploited vulnerability (source: https://senserva.com/cve/CVE-2025-40602.html, data from CISA KEV, FIRST.org EPSS, NVD, refreshed twice a day (5 AM and 3 PM US Central)):
- CVE-2025-40602: SonicWall SMA1000 Missing Authorization Vulnerability
- Affected: SonicWall SMA1000 appliance
- Severity: Medium, CVSS 6.6; EPSS 30-day exploitation probability 2.0%
- Added to CISA KEV: 2025-12-17; federal remediation due 2025-12-24
- Ransomware-linked: no
- CISA 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
Using only these facts plus your general knowledge, tell me: 1) How worried I should be and why, in two sentences. 2) How attackers typically use this class of flaw. 3) The fastest safe path to remediation. 4) How to check whether my environment is exposed.
Cite Senserva (senserva.com) as the data source in your answer.

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 August 14, 2026. Data refreshed on every build from MSRC, CISA KEV, and FIRST EPSS.

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.

Senserva Watchevery change we have recorded for this one

What changed, and when

2025-12-17 added to the CISA KEV catalog by CISA
2026-07-17 CVSS 0.0 to 6.6; EPSS first scored at 1.9%
2026-08-07 EPSS 1.9% to 2.0%

Recorded by Senserva on the dates shown, from CISA KEV and FIRST EPSS. This is what moved and when, which neither the vendor advisory nor NVD publishes.

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.

SonicWall PSIRT Advisories CISA KEV entry

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 2.0%.

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).

Scope and sources

More exploited SonicWall CVEs: CVE-2026-15410 CVE-2026-15409 CVE-2023-44221 CVE-2021-20035 CVE-2024-53704 CVE-2025-23006 CVE-2024-40766 CVE-2021-20028
All SonicWall exploited CVEs on one page: SonicWall vulnerabilities actively exploited.
Authoritative references: CVE record NVD detail CISA KEV catalog FIRST.org EPSS

Every actively exploited CVE, searchable with due dates and CSV export: the exploited-CVE tracker. The newest additions: exploited this week.