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CVE-2021-22277— AC 800M MMS - Denial of Service vulnerability in MMS communication

Quick assessment

Affected
ABB 800xA, Control Software for AC 800M
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 System 800xA Base是瑞士ABB公司的一套用于工控行业的分布式控制系统。 ABB 800xA 中存在安全漏洞，攻击者可利用该漏洞造成拒绝服务攻击。

CVSS 7.5 · High EPSS 0.95% · P61

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-22277

Vulnerability Information
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Vulnerability Title
AC 800M MMS - Denial of Service vulnerability in MMS communication
Source: CVE Program / CVE List V5
Vulnerability Description
Improper Input Validation vulnerability in ABB 800xA, Control Software for AC 800M, Control Builder Safe, Compact Product Suite - Control and I/O, ABB Base Software for SoftControl allows an attacker to cause the denial of service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
ABB System 800xA Base 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ABB System 800xA Base是瑞士ABB公司的一套用于工控行业的分布式控制系统。 ABB 800xA 中存在安全漏洞，攻击者可利用该漏洞造成拒绝服务攻击。
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 800xA, Control Software for AC 800M 5.1.0-0 ~ unspecified -
ABB Control Builder Safe 1.x -
ABB Compact Product Suite - Control and I/O 5.1.0-0 ~ unspecified -
ABB ABB Base Software for SoftControl 5.1.0-0 ~ unspecified -

II. Public POCs for CVE-2021-22277

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2021-22277

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Other References for CVE-2021-22277 (1)

IV. Related Vulnerabilities

Same vendor: ABB
Same weakness: CWE-20