CVE-2025-0657Network attack vector

Device outage via unvalidated BACnet array index

Published Nov 27, 2025 · Updated Nov 28, 2025

Improper array-index validation in Gen5 controller drivers allows remote attackers on BACnet MS/TP networks to stop an essential process. Malformed BACnet packets supply an out-of-range array index, and the resulting exception is not handled before it terminates the process. The controller then disappears from network visibility and remains unavailable until a manual power cycle restores operation.

CVSS severity8.8
High
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper array-index validation in Gen5 controller drivers allows remote attackers on BACnet MS/TP networks to stop an essential process. Malformed BACnet packets supply an out-of-range array index, and the resulting exception is not handled before it terminates the process. The controller then disappears from network visibility and remains unavailable until a manual power cycle restores operation.

The record

CVE
CVE-2025-0657
Published
Nov 27, 2025
Updated
Nov 28, 2025
Vendor
Automated Logic
Product
WebCTRL
Classifications
CWE-129, CWE-248, T0814
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 27, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 28, 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=0 <=8.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Automated Logic · WebCTRLversion=0 <=8.5
Automated Logic · Gen5 Controllersversion=0 <=drv_gen5_108-04-20120
Carrier · i-Vuversion=0 <=8.5

Published CVSS scores

8.8CarrierCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-129Improper Validation of Array Index
CWE-248Uncaught Exception
T0814Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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