MZ Automation libiec61850 up to 1.6.1 URCB Revalidation reporting.c deleteDataSetValuesShadowBuffer use after free

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k1.91

Summaryinfo

A vulnerability, which was classified as critical, has been found in MZ Automation libiec61850 up to 1.6.1. The impacted element is the function deleteDataSetValuesShadowBuffer of the file src/iec61850/server/mms_mapping/reporting.c of the component URCB Revalidation. This manipulation causes use after free. The identification of this vulnerability is CVE-2026-19108. The attack can only be executed locally. Furthermore, there is an exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in MZ Automation libiec61850 up to 1.6.1. Affected by this vulnerability is the function deleteDataSetValuesShadowBuffer of the file src/iec61850/server/mms_mapping/reporting.c of the component URCB Revalidation. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was shared by Chuan Wei (CarnegieMe) as 596 as confirmed issue. The advisory is shared at github.com. The public release happened without involvement of MZ Automation. This vulnerability is known as CVE-2026-19108. The exploitation appears to be easy. An attack has to be approached locally. Technical details and also a public exploit are known.

A public exploit has been developed by Chuan Wei (CarnegieMe) in ANSI C. It is possible to download the exploit at github.com. It is declared as proof-of-concept.

Upgrading to version 1.6.2 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 486fd57f3aed65bb9d636ff00f9ddce2e450b168 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Author: Chuan Wei (CarnegieMe)
Programming Language: 🔒
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍
Reliability: 🔒

0-Day Time: 🔒

Upgrade: libiec61850 1.6.2
Patch: 486fd57f3aed65bb9d636ff00f9ddce2e450b168

Timelineinfo

08/06/2026 Advisory disclosed
08/06/2026 +0 days VulDB entry created
08/06/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: 596
Researcher: Chuan Wei (CarnegieMe)
Status: Confirmed

CVE: CVE-2026-19108 (🔒)
GCVE (CVE): GCVE-0-2026-19108
GCVE (VulDB): GCVE-100-386569
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 08/06/2026 16:03
Updated: 08/06/2026 16:34
Changes: 08/06/2026 16:03 (64), 08/06/2026 16:34 (12)
Complete: 🔍
Submitter: VULL
Committer: SCU_1CP
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #864520: MZ Automation libiec61850 1.6.1 Memory Corruption(heap-use-after-free) (by VULL)

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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