November 15, 2026

CVE Watchtower

CVE-2025-40596Sonicwall Sma Stack-based Buffer Overflow

NVDCVSS scored by 134c704f-9b21-4f2e-91b3-4a467353bcc0

Vulnerability Summary

A Stack-based buffer overflow vulnerability in the SMA100 series web interface allows remote, unauthenticated attacker to cause Denial of Service (DoS) or potentially results in code execution.
Severity Level
HIGH(7.3)
Published Date
Jul 23, 2025
Last Modified
Aug 7, 2025
Exploitation Status
No confirmed exploitation yet
Root Weakness (CWE)
CWE-121: Stack-based Buffer Overflow β†—
The buffer being overwritten is allocated on the stack.
CVSS v3.1 Base Metrics — Score 7.3 (HIGH)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityLow
IntegrityLow
AvailabilityLow

Affected & Patched Versions

Affected Versions
  • Sonicwall Sma 500v Firmware < 10.2.2.1-90sv
  • Sonicwall Sma 210 Firmware < 10.2.2.1-90sv
  • Sonicwall Sma 410 Firmware < 10.2.2.1-90sv
Patched Versions
  • Sonicwall Sma 500v Firmware 10.2.2.1-90sv
  • Sonicwall Sma 210 Firmware 10.2.2.1-90sv
  • Sonicwall Sma 410 Firmware 10.2.2.1-90sv

What to do

Plan remediation soon. No exploitation is confirmed yet, but the severity is high.

  1. Check whether you run Sonicwall Sma and which version.
  2. Update to a patched version listed above, then confirm the new version.

Timeline

  • Jul 23, 2025Published
  • Aug 7, 2025Record last modified

Score, severity and exploitation changes are tracked from the day Watchtower started logging them.

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Related Coverage

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External References

Data last checked: Nov 15, 2026 07:05 UTC