CVE-2015-5628Network attack vector

Remote code execution via crafted PCN packet

Published Feb 5, 2020 · Updated Aug 6, 2024

Stack-based buffer overflow in Yokogawa products listed in YSAR-15-0003 allows remote attackers to execute code via a crafted PCN packet. Yokogawa identifies the affected locus only as the process performing control-network communication and does not disclose the packet field, function, or unsafe copy operation that overruns the stack buffer. Access to the plant control network is required; exploitation stops network communication and its dependent process or executes arbitrary code.

CVSS severity9.8
Critical
EPSS probability6.72%
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

Stack-based buffer overflow in Yokogawa products listed in YSAR-15-0003 allows remote attackers to execute code via a crafted PCN packet. Yokogawa identifies the affected locus only as the process performing control-network communication and does not disclose the packet field, function, or unsafe copy operation that overruns the stack buffer. Access to the plant control network is required; exploitation stops network communication and its dependent process or executes arbitrary code.

The record

CVE
CVE-2015-5628
Published
Feb 5, 2020
Updated
Aug 6, 2024
Vendor
Yokogawa Electric Corporation
Product
Exaopc
Classifications
CWE-787, T0866
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 5, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 2024Record 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=R3.72.00 and earlier

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Yokogawa Electric Corporation · Exaopcversion=R3.72.00 and earlier
Yokogawa Electric Corporation · Field Wireless Device OPC Serverversion=R2.01.02 and earlier
Yokogawa Electric Corporation · PRMversion=R3.12.00 and earlier
Yokogawa Electric Corporation · Exaquantum/Batchversion=R2.50.30 and earlier
Yokogawa Electric Corporation · CENTUM CS 3000version=R3.09.50 and earlier
Yokogawa Electric Corporation · Exasmocversion=R4.03.20 and earlier
Yokogawa Electric Corporation · ProSafe-RSversion=R3.02.10 and earlier
Yokogawa Electric Corporation · Versatile Data Server Software (VDS)version=R7.30.01 and earlier
Yokogawa Electric Corporation · Exarqeversion=R4.03.20 and earlier
Yokogawa Electric Corporation · B/M9000CSversion=R5.05.01 and earlier
Yokogawa Electric Corporation · Exapilotversion=R3.96.10 and earlier
Yokogawa Electric Corporation · Exaquantumversion=R2.85.00 and earlier
Yokogawa Electric Corporation · CENTUM CS 1000version=R3.08.70 and earlier
Yokogawa Electric Corporation · FieldMateversion=R1.01; version=R1.02
Yokogawa Electric Corporation · CENTUM VP Entryversion=R5.04.20 and earlier
Yokogawa Electric Corporation · Exaplogversion=R3.40.00 and earlier
Yokogawa Electric Corporation · CENTUM CS 3000 Entryversion=R3.09.50 and earlier
Yokogawa Electric Corporation · B/M9000 VPversion=R7.03.04 and earlier
Yokogawa Electric Corporation · STARDOM OPC Server for Windowsversion=R3.40 and earlier
Yokogawa Electric Corporation · CENTUM VPversion=R5.04.20 and earlier
Yokogawa Electric Corporation · FAST/TOOLSversion=R10.01 and earlier

Published CVSS scores

8.3Yokogawa Electric CorporationAV:N/AC:L/Au:N/C:C/I:C/A:C/E:F/RL:OF/RC:C
10.0Yokogawa Electric CorporationAV:N/AC:L/Au:N/C:C/I:C/A:C
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10.0NIST NVDAV:N/AC:L/Au:N/C:C/I:C/A:C

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-787Out-of-bounds Write
T0866Exploitation of Remote Services

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

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