How severe is CVE-2025-40602?

CVE-2025-40602 has a CVSS 3.x base score of 6.6, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-40602 being actively exploited?

Yes. CVE-2025-40602 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2025-12-17, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2025-40602?

CVE-2025-40602 primarily affects Sonicwall Sma6200 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-40602?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2025-40602 have an EU (EUVD) identifier?

Yes. CVE-2025-40602 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204255. It is also flagged as exploited in the EUVD (since 2025-12-17).

When was CVE-2025-40602 published?

CVE-2025-40602 was published on 2025-12-18 and last updated on 2026-06-17.

CVE-2025-40602

CVE-2025-40602 is a medium-severity vulnerability in Sonicwall Sma6200 Firmware with a CVSS 3.x base score of 6.6. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2025-12-17). The underlying weakness is classified as CWE-250.

Key facts

Severity: Medium (CVSS 3.x base score 6.6)
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2025-12-17)
EU (EUVD) id: EUVD-2025-204255
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2025-12-17)
Weakness: CWE-250
Affected product: Sonicwall Sma6200 Firmware
Published: 2025-12-18
Last modified: 2026-06-17

Description

A local privilege escalation vulnerability due to insufficient authorization in the SonicWall SMA1000 appliance management console (AMC).

Frequently asked questions

What is CVE-2025-40602?: A local privilege escalation vulnerability due to insufficient authorization in the SonicWall SMA1000 appliance management console (AMC).
How severe is CVE-2025-40602?: CVE-2025-40602 has a CVSS 3.x base score of 6.6, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-40602 being actively exploited?: Yes. CVE-2025-40602 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2025-12-17, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2025-40602?: CVE-2025-40602 primarily affects Sonicwall Sma6200 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-40602?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2025-40602 have an EU (EUVD) identifier?: Yes. CVE-2025-40602 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204255. It is also flagged as exploited in the EUVD (since 2025-12-17).
When was CVE-2025-40602 published?: CVE-2025-40602 was published on 2025-12-18 and last updated on 2026-06-17.

References

Affected products (5)

cpe:2.3:o:sonicwall:sma6200_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:sonicwall:sma6210_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:sonicwall:sma7200_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:sonicwall:sma7210_firmware:*:*:*:*:*:*:*:*
cpe:2.3:a:sonicwall:sma8200v:*:*:*:*:*:*:*:*

More vulnerabilities in Sonicwall Sma6200 Firmware

CVE-2025-23006 — Critical (CVSS 9.8): Pre-authentication deserialization of untrusted data vulnerability has been identified in the SMA1000 Appliance…
CVE-2026-4116 — High (CVSS 7.2): Improper handling of Unicode encoding in SonicWall SMA1000 series appliances allows a remote authenticated SSLVPN user…
CVE-2026-4113 — High (CVSS 7.2): An observable response discrepancy vulnerability in the SonicWall SMA1000 series appliances allows a remote attacker to…
CVE-2026-4112 — High (CVSS 7.2): Improper neutralization of special elements used in an SQL command (“SQL Injection”) in SonicWall SMA1000 series…
CVE-2026-4114 — Medium (CVSS 6.6): Improper handling of Unicode encoding in SonicWall SMA1000 series appliances allows a remote authenticated SSLVPN admin…

All CVEs affecting Sonicwall Sma6200 Firmware →

Other CWE-250 vulnerabilities

CVE-2026-4606 — Critical (CVSS 10.0): GV Edge Recording Manager (ERM) v2.3.1 improperly runs application components with SYSTEM-level privileges, allowing…
CVE-2022-2634 — Critical (CVSS 10.0): An attacker may be able to execute malicious actions due to the lack of device access protections and device…
CVE-2026-48584 — Critical (CVSS 9.9): Execution with unnecessary privileges in Azure Synapse allows an authorized attacker to elevate privileges over a…
CVE-2026-50566 — Critical (CVSS 9.9): Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and…
CVE-2026-44477 — Critical (CVSS 9.9): CloudNativePG is a platform designed to manage PostgreSQL databases within Kubernetes environments. Prior to 1.29.1 and…
CVE-2026-25212 — Critical (CVSS 9.9): An issue was discovered in Percona PMM before 3.7. Because an internal database user retains specific superuser…

Browse all CWE-250 vulnerabilities →