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CVE-2026-15409

SonicWall SMA1000 Appliances Server-Side Request Forgery

10.0 CRITICALActively exploited (CISA KEV)Used in ransomwareEPSS 6.79%
  1. Published14 Jul 2026
  2. Added to CISA KEV14 Jul 2026
  3. Remediation due17 Jul 2026
Actively exploited (CISA KEV)

SonicWall SMA1000 Appliances contain a server-side request forgery vulnerability that could allow a remote unauthenticated attacker to potentially cause the appliance to make requests to unintended location.

Added to KEV: 14 Jul 2026Federal remediation due: 17 Jul 2026Used in ransomware

Description

A Server-side request forgery (SSRF) vulnerability has been identified in the SMA1000 Appliance Work Place interface. A remote unauthenticated attacker could potentially cause the appliance to make requests to unintended location.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected products

SonicWall Sma8200v12.4.3-03245 · 12.4.3-03387 · 12.4.3-03434 · 12.5.0-02283
SonicWall Sma6210 Firmware12.4.3-03245 · 12.4.3-03387 · 12.4.3-03434 · 12.5.0-02283
SonicWall Sma7210 Firmware12.4.3-03245 · 12.4.3-03387 · 12.4.3-03434 · 12.5.0-02283

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2026-15409 being actively exploited?

Yes. CVE-2026-15409 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 14 Jul 2026. It has been used in ransomware campaigns.

How severe is CVE-2026-15409?

CVE-2026-15409 has a CVSS 3.1 base score of 10.0, rated critical. EPSS estimates a 6.79% probability of exploitation.

Which products are affected by CVE-2026-15409?

Affected products include SonicWall Sma8200v, SonicWall Sma6210 Firmware, SonicWall Sma7210 Firmware.

How do I fix CVE-2026-15409?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-15409 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, a risk for it never ranks below high, and the update that fixes it moves to the Emergency patch lane. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.