# CVE-2026-61893 — MZ Automation lib60870

> As of 2026-07-31, CVE-2026-61893 is a MEDIUM-severity vulnerability in MZ Automation lib60870, CVSS v3.1 6.5, EPSS 0.2% (18.1th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-61893 as of 2026-07-31; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-07-31

## What is 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.

The record classifies CVE-2026-61893 under weakness class [CWE-125](https://intel.threadlinqs.com/cwe/CWE-125). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 67 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 6.5 — MEDIUM (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L`)
- **CVSS v4.0 base score:** 6.9 (`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`)
- **EPSS (FIRST):** 0.2% probability of exploitation in the next 30 days, higher than 18.1% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 6/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-07-30, last modified 2026-07-31

## Is CVE-2026-61893 being exploited?

Weaponised exploit code for CVE-2026-61893 is publicly available. 1 public proof-of-concept repository is tracked for this identifier. It currently carries a trending score of 42 in the Threadlinqs vulnerability feed.

- [trickest/cve](https://github.com/trickest/cve/blob/main/2026/CVE-2026-61893.md) (trickest)

## Affected products and versions

- [MZ Automation](https://intel.threadlinqs.com/vendors/mz-automation): lib60870

## How to fix CVE-2026-61893

No vendor patch reference has been recorded for CVE-2026-61893 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-61893

No threat campaign in the Threadlinqs corpus currently references CVE-2026-61893, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD, FIRST EPSS, GitHub Security Advisories, public proof-of-concept repositories. Last verified by Threadlinqs on 2026-08-02. This product uses the NVD API but is not endorsed or certified by the NVD.

**Other references**

- [github.com](https://github.com/mz-automation/lib60870/security/advisories/GHSA-g3w7-x5rx-83xm)
- [cisa.gov](https://www.cisa.gov/news-events/ics-advisories/icsa-26-211-11)
- [github.com (icsa 26 211 11)](https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-211-11.json)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-61893
Full detection coverage and IOCs for threats exploiting CVE-2026-61893 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp