CVE-2022-30264Network attack vector

Unauthenticated flash file access via ROC Opcode 203

Published Aug 16, 2022 · Updated Aug 3, 2024

Insecure file operations in Emerson ROC and FloBoss RTUs through 2022-05-02 allow remote attackers to alter flash filesystem data. ROC protocol Opcode 203 accepts unauthenticated master-terminal requests on TCP ports 4000 and 5000 to read, write, or delete arbitrary flash files and directories. Network reachability to the ROC service is sufficient, and successful use can disclose files, modify control data, or interrupt device operation.

CVSS severity9.8
Critical
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insecure file operations in Emerson ROC and FloBoss RTUs through 2022-05-02 allow remote attackers to alter flash filesystem data. ROC protocol Opcode 203 accepts unauthenticated master-terminal requests on TCP ports 4000 and 5000 to read, write, or delete arbitrary flash files and directories. Network reachability to the ROC service is sufficient, and successful use can disclose files, modify control data, or interrupt device operation.

The record

CVE
CVE-2022-30264
Published
Aug 16, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-345, T1105, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 16, 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?

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

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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-345Insufficient Verification of Data Authenticity
T1105Ingress Tool Transfer
T1005Data from Local System

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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