XML injection in ABB Central Licensing System

Published: 2020-06-03
Risk Medium
Patch available NO
Number of vulnerabilities 1
CVE-ID CVE-2020-8475
Exploitation vector Network
Public exploit N/A
Vulnerable software
ABB Central Licensing System (CLS)
Server applications / Other server solutions

Vendor ABB

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) XML injection

EUVDB-ID: #VU27362

Risk: Medium

CVSSv3.1: 6.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2020-8475

CWE-ID: CWE-91 - XML Injection

Exploit availability: No


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation in the Central Licensing System. A remote unauthenticated attacker can send a specially crafted request containing malformed XML and cause a denial of service condition on the target system.

This vulnerability affects the following ABB CLS products:

  • ABB Ability System 800xA and related system extensions: Versions 5.1, 6.0, 6.1
  • Compact HMI: Versions 5.1, 6.0
  • Control Builder Safe: Versions 1.0, 1.1, 2.0
  • ABB Ability Symphony Plus – S+ Operations: Versions 3.0 to 3.2
  • ABB Ability Symphony Plus – S+ Engineering: Versions 1.1 to 2.2
  • Composer Harmony: Versions 5.1, 6.0, 6.1
  • Composer Melody (incl. SPE for Melody 1.0 SPx): Versions 5.3, 6.1, 6.2, 6.3
  • Harmony OPC Server (HAOPC): Standalone Versions 6.0, 6.1, 7.0
  • ABB Ability System 800xA / Advant OCS Control Builder A: Versions 1.3, 1.4
  • Advant OCS AC 100 OPC Server: Versions 5.1, 6.0, 6.1
  • Composer CTK: Versions 6.1, 6.2
  • AdvaBuild: Versions 3.7 SP1, 3.7 SP2
  • OPC Server MOD 300 (non-800xA): Version 1.4
  • OPC Data Link: Versions 2.1, 2.2
  • ABB Ability Knowledge Manager: Versions 8.0, 9.0, 9.1
  • ABB Ability Manufacturing Operations Management: Versions 1812, 1909


Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

ABB Central Licensing System (CLS): All versions

CPE2.3 External links


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.