CVE-2021-22685Public exploitNetwork attack vector

Unauthenticated file disclosure via unsanitized minify path

Published Oct 14, 2022 · Updated Apr 16, 2025

Path traversal in Cassia Networks IoT Access Controller before 2.0.1 allows remote attackers to read server files through the minify route. The route accepts a client-supplied relative path and returns the referenced file without verifying or sanitizing the path. Exploitation requires no authentication, but disclosure is confined to files inside the application server's Docker container.

CVSS severity7.5
High
EPSS probability0.63%
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

Path traversal in Cassia Networks IoT Access Controller before 2.0.1 allows remote attackers to read server files through the minify route. The route accepts a client-supplied relative path and returns the referenced file without verifying or sanitizing the path. Exploitation requires no authentication, but disclosure is confined to files inside the application server's Docker container.

The record

CVE
CVE-2021-22685
Published
Oct 14, 2022
Updated
Apr 16, 2025
Vendor
Cassia Networks
Product
Cassia IoT Access Controller
Classifications
CWE-22, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 14, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 16, 2025Record 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=unspecified <2.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Cassia Networks · Cassia IoT Access Controllerversion=unspecified <2.0.1

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
6.2ICS-CERTCVSS:3.1/AV:L/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 exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1005Data from Local System

Public exploit references

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