MZ Automation lib60870

View CSAF
Summary
Successful exploitation of this vulnerability could cause the parsing process to crash, which will cause a denial of service. The following versions of MZ Automation lib60870 are affected:

lib60870 <=2.4.0





CVSS
Vendor
Equipment
Vulnerabilities




v3 8.2
MZ Automation
MZ Automation lib60870
Out-of-bounds Read




Background

Critical Infrastructure Sectors: Chemical, Energy, Water and Wastewater Countries/Areas Deployed: Worldwide Company Headquarters Location: Germany


Vulnerabilities

Expand All +

CVE-2026-16002

The affected product is vulnerable to an Out-of-bounds read, which may allow an attacker to crash the parsing process and cause a denial of service. View CVE Details

Affected Products
MZ Automation lib60870

Vendor:MZ Automation
Product Version:MZ Automation lib60870: <=2.4.0 Product Status:known_affected


Remediations
Vendor fixMZ automation recommends users update to version 2.4.1 or later. Documentation can be found at https://github.com/mz-automation/lib60870/securit y/advisories/GHSA-f5xp-w6f3-vvrv.https://github.com/mz-automation/lib60870/secu
rity/advisories/GHSA-f5xp-w6f3-vvrv

Relevant CWE: CWE-125 Out-of-bounds Read

Metrics




CVSS Version
Base Score
Base Severity
Vector String




3.1
8.2
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H


4.0
8.8
HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N








Acknowledgments

Lars Tray reported this vulnerability to CISA


Legal Notice and Terms of Use
This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy).

Recommended Practices
CISA recommends users take defensive measures to minimize the risk of exploitation of this (these) vulnerability(ies). Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet. Locate control system networks and remote devices behind firewalls and isolating them from business networks. When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. CISA also provides a section for control systems security recommended practices
on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets. Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Strategies.
Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
CISA also recommends users take the following measures to protect themselves from social engineering attacks:
Do not click web links or open attachments in unsolicited email messages. Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.
No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time.

Revision History

Initial Release Date: 2026-07-23




Date
Revision
Summary




2026-07-23
1
Initial Publication




Legal Notice and Terms of Use

https://www.cisa.gov/news-events/ics-advisories/icsa-26-204-07

2026-07-23 12:00 UTC

--- BBBS/LiR v4.10 Toy-7
* Origin: LISTS. from TCOB1 READ ONLY (2:263/1)

MZ Automation lib60870

View CSAF
Summary
Successful exploitation of these vulnerabilities could crash the device being accessed.
The following versions of MZ Automation lib60870 are affected:

lib60870 2.4.0 (CVE-2026-61893, CVE-2026-63033)





CVSS
Vendor
Equipment
Vulnerabilities




v3 6.5
MZ Automation GmbH
MZ Automation lib60870
Out-of-bounds Read




Background

Critical Infrastructure Sectors: Energy, Water and Wastewater, Critical Manufacturing, Chemical
Countries/Areas Deployed: Worldwide Company Headquarters Location: Germany


Vulnerabilities

Expand All +

CVE-2026-61893

A crafted IEC 60870-5-104 I-frame with TypeID 104 (C_TS_NA_1) and an inflated object count causes TestCommand_getFromBuffer to read one byte past the end of the heap-allocated message buffer.
View CVE Details

Affected Products
MZ Automation lib60870

Vendor:MZ Automation GmbH
Product Version:MZ Automation GmbH lib60870: 2.4.0 Product Status:known_affected


Remediations
MitigationMZ Automation recommends users update to version 2.4.1 when available.
Vendor fixSee MZ Automation advisories for more information: https://github.com/mz-automation/lib60870/security/advisories/GHSA-g3w7-x5rx-83
xmhttps://github.com/mz-automation/lib60870/security/advisories/GHSA-g3w7-x5rx- 83xm

Relevant CWE: CWE-125 Out-of-bounds Read

Metrics




CVSS Version
Base Score
Base Severity
Vector String




3.1
6.5
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L


4.0
6.9
MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N







CVE-2026-63033

A crafted IEC 60870-5-104 I-frame with a declared object count exceeding what fits in the ASDU body causes InformationObject_ParseObjectAddress to read one byte past the end of the heap-allocated message buffer. View CVE Details

Affected Products
MZ Automation lib60870

Vendor:MZ Automation GmbH
Product Version:MZ Automation GmbH lib60870: 2.4.0 Product Status:known_affected


Remediations
MitigationMZ Automation recommends users update to version 2.4.1 when available.
Vendor fixSee MZ Automation advisory for more information: https://github.com/mz-automation/lib60870/security/advisories/GHSA-7v97-jmwv-w5
j7https://github.com/mz-automation/lib60870/security/advisories/GHSA-7v97-jmwv -w5j7

Relevant CWE: CWE-125 Out-of-bounds Read

Metrics




CVSS Version
Base Score
Base Severity
Vector String




3.1
6.5
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L


4.0
6.9
MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N








Acknowledgments

arun babu puthuparambil of Central Power Research Institute, Bengaluru, India reported these vulnerabilities to CISA


Legal Notice and Terms of Use
This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy).

Recommended Practices
CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet. Locate control system networks and remote devices behind firewalls and isolating them from business networks. When remote access is required, use more secure methods, such as virtual private networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. CISA also provides a section for control systems security recommended practices
on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets. Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Strategies.
Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.

Revision History

Initial Release Date: 2026-07-30




Date
Revision
Summary




2026-07-30
1
Initial Publication




Legal Notice and Terms of Use

https://www.cisa.gov/news-events/ics-advisories/icsa-26-211-11

2026-07-30 12:00 UTC

--- BBBS/LiR v4.10 Toy-7
* Origin: LISTS. from TCOB1 READ ONLY (2:263/1)