PT-2026-62010

Malcolm v26.07.0 adds IEC 60870-5-104 IEC 104 protocol support using CERT.LV's Zeek plugin, including Logstash parsing, ECS normalization, Arkime fields, and a new OpenSearch Dashboards dashboard. This release also fixes three archive extraction and authentication security vulnerabilities; improv...

PT-2026-62011

Malcolm v26.07.0 adds IEC 60870-5-104 IEC 104 protocol support using CERT.LV's Zeek plugin, including Logstash parsing, ECS normalization, Arkime fields, and a new OpenSearch Dashboards dashboard. This release also fixes three archive extraction and authentication security vulnerabilities; improv...

Hitachi Energy RTU500 NULL Pointer Dereference (CVE-2026-8479)

IEC 60870-5-104 used in bidirectional mode is vulnerable to a NULL pointer dereference; if a specially crafted sequence of messages is sent for a certain time, this causes Denial of Service impact. Product is only affected if IEC 60870-5-104 functionality in bidirectional mode BCI is configured...

Hitachi Energy RTU500 Infinite Loop (CVE-2026-32777)

libexpat before 2.7.5 allows an infinite loop while parsing DTD content, causing Denial of Service impact. Product is only affected if IEC 61850 functionality is configured. This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information...

Hitachi Energy RTU500 NULL Pointer Dereference (CVE-2026-32778)

libexpat before 2.7.5 allows a NULL pointer dereference in the function setContext on retry after an earlier out-of-memory condition, causing Denial of Service impact. Product is only affected if IEC 61850 functionality is configured. This plugin only works with Tenable.ot. Please visit...

Hitachi Energy RTU500 NULL Pointer Dereference (CVE-2026-32776)

libexpat before 2.7.5 allows a NULL pointer dereference with empty external parameter entity content, causing Denial of Service impact. Product is only affected if IEC 61850 functionality is configured. This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-...

Hitachi Energy RTU500 NULL Pointer Dereference (CVE-2026-24515)

In libexpat before 2.7.4, XMLExternalEntityParserCreate does not copy unknown encoding handler user data, causing Denial of Service impact. Product is only affected if IEC 61850 functionality is configured. This plugin only works with Tenable.ot. Please visit...

CVE-2026-8479

IEC 60870-5-104 used in bidirectional mode in RTU500 is vulnerable for a NULL pointer dereferencing, if a specially crafted sequence of messages is sent for a certain time, causing Denial of Service impact. Product is only affected if IEC 60870-5-104 functionality in bidirectional mode BCI is...

EUVD-2026-31814

IEC 60870-5-104 used in bidirectional mode in RTU500 is vulnerable for a NULL pointer dereferencing, if a specially crafted sequence of messages is sent for a certain time, causing Denial of Service impact. Product is only affected if IEC 60870-5-104 functionality in bidirectional mode BCI is...

CVE-2026-8479

IEC 60870-5-104 used in bidirectional mode in RTU500 is vulnerable for a NULL pointer dereferencing, if a specially crafted sequence of messages is sent for a certain time, causing Denial of Service impact. Product is only affected if IEC 60870-5-104 functionality in bidirectional mode BCI is...

Astra Linux – Vulnerability in Linux 5.10, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: Firewire: Fix for memory leak in the payload of the request subaction to the IEC 61883-1 FCP region. This patch applies to Linux kernel versions v2.6.33 or later. For the request subaction to the IEC 61883-1 FCP region, the Linux...

CVE-2025-3756

A vulnerability exists in the command handling of the IEC 61850 communication stack included in the product revisions listed as affected in this CVE. An attacker with access to IEC 61850 networks could exploit the vulnera bility by using a specially crafted 61850 packet, forcing the communication...

PT-2026-32485

Name of the Vulnerable Software and Affected Versions AC800M System 800xA versions 6.0.0x through 6.0.0303.0 AC800M System 800xA versions 6.1.0x through 6.1.0031.0 AC800M System 800xA versions 6.1.1x through 6.1.1202.0 AC800M System 800xA versions 6.2.0x through 6.2.0006.0 Symphony Plus SD Series...

CritBench: A Framework for Evaluating Cybersecurity Capabilities of Large Language Models in IEC 61850 Digital Substation Environments

The advancement of Large Language Models LLMs has raised concerns regarding their dual-use potential in cybersecurity. Existing evaluation frameworks overwhelmingly focus on Information Technology IT environments, failing to capture the constraints, and specialized protocols of Operational...

Hitachi Energy RTU500 Product Allocation of Resources Without Limits or Throttling (CVE-2025-59375)

libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing. Product is only affected if IEC61850 functionality is configured. This plugin only works with Tenable.ot. Please visit...

CVE-2024-9684

FreyrSCADA/IEC-60870-5-104 server v21.06.008 is affected by a denial-of-service vulnerability triggered by specific message sequences. Root cause relates to how the server handles certain sequences, leading to an availability impact. The CVE is referenced across multiple sources (NVD, CVE List, C...

PT-2025-52761

Name of the Vulnerable Software and Affected Versions FreyrSCADA/IEC-60870-5-104 server version 21.06.008 Description The software is susceptible to a denial of service condition. Remote attackers can trigger this by transmitting specifically crafted message sequences. Recommendations Update to a...

CVE-2025-63927

A heap-use-after-free vulnerability exists in airpig2011 IEC104 thru Commit be6d841 2019-07-08. During multi-threaded client execution, the function Iec10xScheduled can access memory that has already been freed, potentially causing program crashes or undefined behavior. This may be exploited to...

airpig2011 IEC104 安全漏洞

airpig2011 IEC104 is a protocol used for power system automation communication by the individual developer dj chen in China. A security vulnerability exists in airpig2011 IEC104 Commit be6d841 and prior versions, which originates from a post-release reuse during multi-threaded execution that coul...

Unity Linux 20.1070a Security Update: kernel (UTSA-2025-988941)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-988941 advisory. In the Linux kernel, the following vulnerability has been resolved: firewire: fix memory leak for payload of request subaction to IEC 61883-1 FCP region This patch i...