CVE-2026-61893: MZ Automation lib60870 · Out-of-bounds Read
Affects MZ Automation lib60870Source CVE Database V5
Not known to be exploited · CVSS 6.5 Medium.
Data as of 29 Oct 2026, 10:37 UTC
- 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:LExploitation evidence
Disclosed: evidence found.
CVE published 30 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| MZ Automationlib60870 | Affected
| Fixed in– |
GitHubmz-automation/lib60870pkg:github/mz-automation/lib60870Other threats | Affected
| 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.