CVE-2026-3469Network attack vector

Application hang via improperly validated input

Published Mar 31, 2026 · Updated Mar 31, 2026

Improper input validation in SonicWall Email Security 10.0.34.8223 and earlier allows remote authenticated users to hang the application. SonicWall states that crafted input is not validated before processing but has not identified the affected request, parameter, or code path. An administrator account and network access to the appliance are required; successful exploitation leaves the application unresponsive, with no published confidentiality or integrity effect.

CVSS severity2.7
Low
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in SonicWall Email Security 10.0.34.8223 and earlier allows remote authenticated users to hang the application. SonicWall states that crafted input is not validated before processing but has not identified the affected request, parameter, or code path. An administrator account and network access to the appliance are required; successful exploitation leaves the application unresponsive, with no published confidentiality or integrity effect.

The record

CVE
CVE-2026-3469
Published
Mar 31, 2026
Updated
Mar 31, 2026
Vendor
SonicWall
Product
Email Security
Classifications
CWE-20, T1499
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 31, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 31, 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=10.0.34.8215 and earlier versions
  2. Affected versionversion=10.0.34.8223 and earlier versions

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

SonicWall · Email Securityversion=10.0.34.8215 and earlier versions; version=10.0.34.8223 and earlier versions

Published CVSS scores

2.7CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1499Endpoint Denial of Service

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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