fixnx
criticalCISA KEVCVE-2026-15410

CVE-2026-15410 in SonicWall SMA 1000 Series

SonicWall SMA1000 Appliances contain a code injection vulnerability which in specific conditions could potentially enable a remote authenticated attacker as administrator to execute arbitrary OS commands.

ProductSonicWall SMA 1000 Series
CVSS7.2
EPSSNot scored yet
UpdatedJuly 15, 2026

Quick answer

SonicWall SMA 1000 Series should be reviewed and updated if it matches the affected versions. The recommended fix is to apply the vendor-supported patched version or the mitigation steps below, then retest the public website with Fixnx.

Who is affected

Affected versions

  • SMA 1000 firmware 12.4.3-03245, 12.4.3-03387, and 12.4.3-03434
  • SMA 1000 firmware 12.5.0-02283, 12.5.0-02624, and 12.5.0-02800

Fixed versions

  • 12.4.3-03453 or later
  • 12.5.0-02835 or later

How to fix it

CVE-2026-15410 affects SonicWall SMA 1000 Series. In simple terms, an attacker may run commands or unsafe code if they can reach the vulnerable feature. Fix it by updating to 12.4.3-03453 or later; 12.5.0-02835 or later. If this system is online or used by admins, treat the fix as urgent.

  1. Find every place where SonicWall SMA 1000 Series is installed or used.
  2. Check if the version matches: SMA 1000 firmware 12.4.3-03245, 12.4.3-03387, and 12.4.3-03434; SMA 1000 firmware 12.5.0-02283, 12.5.0-02624, and 12.5.0-02800.
  3. Update or apply the vendor fix: 12.4.3-03453 or later; 12.5.0-02835 or later.
  4. If you cannot update today, allow only trusted users and trusted networks.
  5. Turn off the affected feature or plugin if the vendor says that is safe to do.
  6. Check logs for crashes, strange requests, new admin actions, or unexpected access.
  7. Change secrets or passwords if you think data or admin access may have been exposed.

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Verify the fix

  • Confirm the installed version or mitigation matches: 12.4.3-03453 or later; 12.5.0-02835 or later.
  • Confirm the affected feature is no longer exposed to untrusted users.
  • Run the affected workflow again and make sure it still works.
  • Review logs again after the fix for repeated suspicious activity.
  • Run a new Fixnx scan if this software is part of a public website.
  • Save the advisory link and proof of the fix in your change record.

Related categories

Network SecurityRemote Code Execution

Trusted references

Source advisoryCISA KEV, NVDSource advisoryCISA KEV, NVDSource advisoryCISA KEV, NVDCISA KEV entryCISA KEV, NVD

FAQ

What is affected by CVE-2026-15410?

SonicWall SMA 1000 Series versions listed as affected should be reviewed: SMA 1000 firmware 12.4.3-03245, 12.4.3-03387, and 12.4.3-03434, SMA 1000 firmware 12.5.0-02283, 12.5.0-02624, and 12.5.0-02800.

What should I fix first?

Start with internet-facing sites, admin panels, login flows, plugins, themes, modules, packages, and systems that process user-controlled input or sensitive data.

How do I confirm the fix worked?

Apply the patched version or mitigation, clear caches where relevant, retest the affected workflow, and run a new Fixnx scan to verify public website exposure signals.

How are Fixnx security risk categories chosen?

Fixnx keeps one canonical risk page and assigns only broad, relevant categories such as ecosystem, technology area, or vulnerability class.