CVE-2025-4675

Modbus service outage via malformed messages

Published Jan 7, 2026 · Updated Jan 7, 2026

Improper exception handling in ABB WebPro SNMP Card PowerValue products through 1.1.8.k allows remote attackers to disable Modbus. The device's Modbus slave implementation mishandles a crafted message, destabilizing TCP port 502 until the device is manually rebooted. Exploitation requires access to the system network but no authentication or user interaction, and the reported consequence is limited to Modbus service unavailability.

CVSS severity7.1
High
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper exception handling in ABB WebPro SNMP Card PowerValue products through 1.1.8.k allows remote attackers to disable Modbus. The device's Modbus slave implementation mishandles a crafted message, destabilizing TCP port 502 until the device is manually rebooted. Exploitation requires access to the system network but no authentication or user interaction, and the reported consequence is limited to Modbus service unavailability.

The record

CVE
CVE-2025-4675
Published
Jan 7, 2026
Updated
Jan 7, 2026
Vendor
GENEREX SYSTEMS Computervertriebsgesellschaft mbH
Product
WebPro SNMP card PowerValue
Classifications
CWE-754, T1499.004
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 7, 2026Record 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 <=1.1.8.k

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

GENEREX SYSTEMS Computervertriebsgesellschaft mbH · WebPro SNMP card PowerValueversion=0 <=1.1.8.k
GENEREX SYSTEMS Computervertriebsgesellschaft mbH · WebPro SNMP card PowerValue ULversion=0 <=1.1.8.k

Published CVSS scores

6.5ABBCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.1ABBCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
5.6ABBCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:F/RL:O/RC:U

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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-754Improper Check for Unusual or Exceptional Conditions
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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