CVE-2025-8754Network attack vector

Unauthenticated host reboot via Remote Transport

Published Aug 13, 2025 · Updated Aug 13, 2025

Authentication bypass in ABB Ability zenon 7.50 through 14 allows remote attackers with network access to reboot the host. The Remote Transport Service in zensyssrv.exe accepts an unauthenticated Reboot OS command despite requiring a configured password for remote transport. Reachability requires access to the deployment network; successful exploitation reboots the machine and interrupts its Service Engine runtime.

CVSS severity7.5
High
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in ABB Ability zenon 7.50 through 14 allows remote attackers with network access to reboot the host. The Remote Transport Service in zensyssrv.exe accepts an unauthenticated Reboot OS command despite requiring a configured password for remote transport. Reachability requires access to the deployment network; successful exploitation reboots the machine and interrupts its Service Engine runtime.

The record

CVE
CVE-2025-8754
Published
Aug 13, 2025
Updated
Aug 13, 2025
Vendor
GENEREX SYSTEMS Computervertriebsgesellschaft mbH
Product
ABB Ability zenon
Classifications
CWE-306, T1529
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 13, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 13, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=7.50 <=14

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

GENEREX SYSTEMS Computervertriebsgesellschaft mbH · ABB Ability zenonversion=7.50 <=14

Published CVSS scores

8.7ABBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/AU:N
7.5ABB PSIRTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1529System Shutdown/Reboot

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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