CVE-2023-34126Network attack vector

Root file writes via unsanitized upload parameters

Published Jul 13, 2023 · Updated Oct 31, 2024

Arbitrary file upload in SonicWall GMS 9.3.2-SP1 and earlier and Analytics 2.5.0.4-R7 and earlier lets remote authenticated users write as root. The upload handler fails to sanitize user-controlled parameters and accepts attacker-selected filesystem destinations. Administrative access is required, and a successful upload can place a web shell that executes code with root privileges.

CVSS severity8.8
High
EPSS probability0.76%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Arbitrary file upload in SonicWall GMS 9.3.2-SP1 and earlier and Analytics 2.5.0.4-R7 and earlier lets remote authenticated users write as root. The upload handler fails to sanitize user-controlled parameters and accepts attacker-selected filesystem destinations. Administrative access is required, and a successful upload can place a web shell that executes code with root privileges.

The record

CVE
CVE-2023-34126
Published
Jul 13, 2023
Updated
Oct 31, 2024
Vendor
SonicWall
Product
Global Management System (GMS)
Classifications
CWE-434, T1505.003
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jul 13, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 31, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=9.3.2-SP1 and earlier versions

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

SonicWall · Global Management System (GMS)version=9.3.2-SP1 and earlier versions
SonicWall · SonicWall Analyticsversion=2.5.0.4-R7 and earlier versions

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.1NCC GroupCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

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-434Unrestricted Upload of File with Dangerous Type
T1505.003Server Software Component: Web Shell

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo