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CVE-2025-7745— Modbus TCP buffer overread

Quick assessment

Affected
ABB AC500 V2
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ABB AC500 V2是瑞士ABB公司的一个PLC。适用于简单的控制任务和复杂的自动化解决方案。 ABB AC500 V2 2.5.2及之前版本存在安全漏洞，该漏洞源于容易受到缓冲区过度读取攻击。

CVSS 5.8 · Medium EPSS 0.47% · P41

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-7745

Vulnerability Information
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Vulnerability Title
Modbus TCP buffer overread
Source: CVE Program / CVE List V5
Vulnerability Description
Buffer Over-read vulnerability in ABB AC500 V2.This issue affects AC500 V2: through 2.5.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
缓冲区上溢读取
Source: CVE Program / CVE List V5
Vulnerability Title
ABB AC500 V2 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ABB AC500 V2是瑞士ABB公司的一个PLC。适用于简单的控制任务和复杂的自动化解决方案。 ABB AC500 V2 2.5.2及之前版本存在安全漏洞，该漏洞源于容易受到缓冲区过度读取攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ABB AC500 V2 0 ~ 2.5.2 -

II. Public POCs for CVE-2025-7745

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III. Intelligence Information for CVE-2025-7745

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IV. Related Vulnerabilities

Same product: AC500 V2
Same vendor: ABB
Same weakness: CWE-126