CVE-2022-36133Network attack vector

Unauthenticated settings changes via WebConfig authentication bypass

Published Nov 25, 2022 · Updated Apr 25, 2025

Authentication bypass in Epson TM-C3500 and TM-C7500 firmware WAM31500 allows remote attackers to change settings through WebConfig. Public Epson and CVE materials do not disclose the authentication check, request path, or implementation error that enables the bypass. Network access to the browser-based WebConfig interface is required, and successful exploitation permits device-setting changes or service interruption.

CVSS severity9.1
Critical
EPSS probability0.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Epson TM-C3500 and TM-C7500 firmware WAM31500 allows remote attackers to change settings through WebConfig. Public Epson and CVE materials do not disclose the authentication check, request path, or implementation error that enables the bypass. Network access to the browser-based WebConfig interface is required, and successful exploitation permits device-setting changes or service interruption.

The record

CVE
CVE-2022-36133
Published
Nov 25, 2022
Updated
Apr 25, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-287, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 25, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 25, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
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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