MZ Automation libiec61850 up to 1.4 MMS File Services mms_client_files.c filename path traversal

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.

A vulnerability has been found in MZ Automation libiec61850 up to 1.4 (Automation Software) and classified as critical. This vulnerability affects an unknown function of the file src/mms/iso_mms/client/mms_client_files.c of the component MMS File Services. The manipulation of the argument filename with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was released 11/13/2022 as 10622ba36bb3910c151348f1569f039ecdd8786f. The advisory is shared for download at This vulnerability was named CVE-2022-3976. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1006.

Upgrading to version 1.5 eliminates this vulnerability. The upgrade is hosted for download at Applying the patch 10622ba36bb3910c151348f1569f039ecdd8786f is able to eliminate this problem. The bugfix is ready for download at The best possible mitigation is suggested to be upgrading to the latest version.

Entries connected to this vulnerability are available at VDB-266085, VDB-266249, VDB-266465 and VDB-269423.







CPE 2.3info

CPE 2.2info


VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍


VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.5

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CNA Base Score: 5.5
CNA Vector (VulDB): 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍


Class: Path traversal

Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfo

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


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: libiec61850 1.5
Patch: 10622ba36bb3910c151348f1569f039ecdd8786f


11/13/2022 🔍
11/13/2022 +0 days 🔍
11/13/2022 +0 days 🔍
12/17/2022 +34 days 🔍


Advisory: 10622ba36bb3910c151348f1569f039ecdd8786f
Status: Confirmed

CVE: CVE-2022-3976 (🔍)
See also: 🔍


Created: 11/13/2022 03:10 PM
Updated: 12/17/2022 03:24 PM
Changes: 11/13/2022 03:10 PM (46), 12/17/2022 03:18 PM (3), 12/17/2022 03:24 PM (21)
Complete: 🔍
Cache ID: 100:573:40


No comments yet. Languages: en.

Please log in to comment.

Might our Artificial Intelligence support you?

Check our Alexa App!