CVE-2021-20030Network attack vector

Unauthenticated file disclosure via path traversal

Published Oct 13, 2022 · Updated May 16, 2025

Path traversal in SonicWall Global Management System before 9.3.2 allows remote attackers to read application binaries and configuration files. GMS request-path handling fails to confine crafted paths to authorized locations, although SonicWall has not disclosed the affected handler or exact normalization error. No authentication or user interaction is required; successful requests disclose protected files without enabling modification or service interruption.

CVSS severity7.5
High
EPSS probability0.84%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in SonicWall Global Management System before 9.3.2 allows remote attackers to read application binaries and configuration files. GMS request-path handling fails to confine crafted paths to authorized locations, although SonicWall has not disclosed the affected handler or exact normalization error. No authentication or user interaction is required; successful requests disclose protected files without enabling modification or service interruption.

The record

CVE
CVE-2021-20030
Published
Oct 13, 2022
Updated
May 16, 2025
Vendor
SonicWall
Product
Global Management System (GMS)
Classifications
CWE-22, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 13, 2022CVE publishedPublication date reported by the CVE source.
  2. May 16, 2025Record 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=prior GMS 9.3.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SonicWall · Global Management System (GMS)version=prior GMS 9.3.2

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1190Exploit Public-Facing Application

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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