CVE-2026-66149

Root command execution via updateNetIf netmask injection

Published Aug 11, 2026 · Updated Aug 11, 2026

Code injection in SonicWall Email Security 10.0.35.8405 and earlier allows local users with restricted CLI access to execute commands as root. The updateNetIf function passes an insufficiently validated netmask string to a system call, enabling shell command injection. Restricted CLI access is required; successful exploitation elevates low-privileged code execution to unrestricted root execution.

CVSS severity7.8
High
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in SonicWall Email Security 10.0.35.8405 and earlier allows local users with restricted CLI access to execute commands as root. The updateNetIf function passes an insufficiently validated netmask string to a system call, enabling shell command injection. Restricted CLI access is required; successful exploitation elevates low-privileged code execution to unrestricted root execution.

The record

CVE
CVE-2026-66149
Published
Aug 11, 2026
Updated
Aug 11, 2026
Vendor
SonicWall
Product
Email Security
Classifications
CWE-94, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.0.35.8405 and earlier versions

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

SonicWall · Email Securityversion=10.0.35.8405 and earlier versions

Published CVSS scores

7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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