CVE-2022-32284Network attack vector

Unauthenticated service stoppage via malformed packets

Published Jul 4, 2022 · Updated Aug 3, 2024

Use of insufficiently random values in Yokogawa VI461 firmware R12 and earlier allows remote attackers to stop WAC Router functions. Yokogawa identifies malformed packet handling as the trigger but does not disclose the deficient random value, packet field, or processing locus. An unauthenticated network sender can interrupt router functions, while no confidentiality or integrity consequence is reported.

CVSS severity5.9
Medium
EPSS probability3.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use of insufficiently random values in Yokogawa VI461 firmware R12 and earlier allows remote attackers to stop WAC Router functions. Yokogawa identifies malformed packet handling as the trigger but does not disclose the deficient random value, packet field, or processing locus. An unauthenticated network sender can interrupt router functions, while no confidentiality or integrity consequence is reported.

The record

CVE
CVE-2022-32284
Published
Jul 4, 2022
Updated
Aug 3, 2024
Vendor
Yokogawa Electric Corporation
Product
Communication Module for Wide Area Communication Router (for AW810D) VI461
Classifications
CWE-330, CAPEC-485, CAPEC-59, CAPEC-112, T0814
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 4, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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=Vnet/IP firmware (F) R12 or earlier

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Yokogawa Electric Corporation · Communication Module for Wide Area Communication Router (for AW810D) VI461version=Vnet/IP firmware (F) R12 or earlier

Published CVSS scores

5.9Yokogawa Electric CorporationCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
7.8NIST NVDAV:N/AC:L/Au:N/C:N/I:N/A:C
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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.

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-330Use of Insufficiently Random Values
CAPEC-485Signature Spoofing by Key Recreation
CAPEC-59Session Credential Falsification through Prediction
CAPEC-112Brute Force
T0814Denial 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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