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VulnerabilityPublished

CVE-2026-61893: MZ Automation lib60870 · Out-of-bounds Read

Affects MZ Automation lib60870Source CVE Database V5

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Not known to be exploited · CVSS 6.5 Medium.

Data as of 29 Oct 2026, 10:37 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 39% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 30 Jul 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
MZ Automationlib60870Affected
  • =2.4.0
Fixed in–
GitHubmz-automation/lib60870pkg:github/mz-automation/lib60870Other threatsAffected
  • =2.4.0
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Users should monitor the vendor advisory for updates and consider implementing network-level protections to restrict untrusted IEC 60870-5-104 traffic until a fix is released.

Description

CVE-2026-61893 is a medium severity vulnerability in MZ Automation's lib60870 library version 2.4.0. It involves a heap buffer over-read caused by a crafted IEC 60870-5-104 I-frame with TypeID 104 and an inflated object count, leading the function TestCommand_getFromBuffer to read one byte past the allocated buffer.

References

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