MZ Automation libIEC61850 up to 1.6.1 MMS Write Named Variable List null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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4.3$0-$5k4.02

Summaryinfo

A vulnerability classified as problematic was found in MZ Automation libIEC61850 up to 1.6.1. Impacted is an unknown function of the component MMS Write Named Variable List Handler. Executing a manipulation can lead to null pointer dereference. This vulnerability is handled as CVE-2026-50032. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability classified as problematic was found in MZ Automation libIEC61850 up to 1.6.1. This vulnerability affects an unknown function of the component MMS Write Named Variable List Handler. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. CVE summarizes:

A NULL pointer dereference in the MMS Write Named Variable List handler, which may allow a network adjacent attacker to crash the server by sending a WriteRequest with an empty listOfData field.

The advisory is shared for download at cisa.gov. This vulnerability was named CVE-2026-50032 since 06/09/2026. The exploitation appears to be easy. The attack can be initiated remotely. There are neither technical details nor an exploit publicly available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-48397). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

06/09/2026 CVE reserved
07/23/2026 +44 days Advisory disclosed
07/23/2026 +0 days VulDB entry created
07/24/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: cisa.gov
Status: Not defined

CVE: CVE-2026-50032 (🔒)
GCVE (CVE): GCVE-0-2026-50032
GCVE (VulDB): GCVE-100-382816
EUVD: 🔒

Entryinfo

Created: 07/23/2026 23:21
Updated: 07/24/2026 00:24
Changes: 07/23/2026 23:21 (53), 07/24/2026 00:24 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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