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Medium severity5.3NVD Advisory· Published Apr 29, 2020· Updated Jun 17, 2026

CVE-2020-8476

CVE-2020-8476

Description

For the Central Licensing Server component used in ABB products ABB Ability™ System 800xA and related system extensions versions 5.1, 6.0 and 6.1, Compact HMI versions 5.1 and 6.0, Control Builder Safe 1.0, 1.1 and 2.0, Symphony Plus -S+ Operations 3.0 to 3.2 Symphony Plus -S+ Engineering 1.1 to 2.2, Composer Harmony 5.1, 6.0 and 6.1, Melody Composer 5.3, 6.1/6.2 and SPE for Melody 1.0SPx (Composer 6.3), Harmony OPC Server (HAOPC) Standalone 6.0, 6.1 and 7.0, ABB Ability™ System 800xA/ Advant® OCS Control Builder A 1.3 and 1.4, Advant® OCS AC100 OPC Server 5.1, 6.0 and 6.1, Composer CTK 6.1 and 6.2, AdvaBuild 3.7 SP1 and SP2, OPCServer for MOD 300 (non-800xA) 1.4, OPC Data Link 2.1 and 2.2, Knowledge Manager 8.0, 9.0 and 9.1, Manufacturing Operations Management 1812 and 1909, ABB AbilityTM SCADAvantage versions 5.1 to 5.6.5, a weakness in validation of input exists that allows an attacker to alter licenses assigned to the system nodes by sending specially crafted messages to the CLS web service.

Affected products

21
  • Abb/ABB Ability System 800xAllm-fuzzy2 versions
    versions 5.1, 6.0 and 6.1+ 1 more
    • (no CPE)range: versions 5.1, 6.0 and 6.1
    • (no CPE)range: 5.1
  • Abb/Compact HMIllm-fuzzy2 versions
    versions 5.1 and 6.0+ 1 more
    • (no CPE)range: versions 5.1 and 6.0
    • (no CPE)range: 5.1
  • Abb/Central Licensing Serverllm-fuzzy2 versions
    versions 5.1, 6.0 and 6.1, Compact HMI versions 5.1 and 6.0, Control Builder Safe 1.0, 1.1 and 2.0, Symphony Plus -S+ Operations 3.0 to 3.2 Symphony Plus -S+ Engineering 1.1 to 2.2, Composer Harmony 5.1, 6.0 and 6.1, Melody Composer 5.3, 6.1/6.2 and SPE for Melody 1.0SPx (Composer 6.3), Harmony OPC Server (HAOPC) Standalone 6.0, 6.1 and 7.0, ABB Ability™ System 800xA/ Advant® OCS Control Builder A 1.3 and 1.4, Advant® OCS AC100 OPC Server 5.1, 6.0 and 6.1, Composer CTK 6.1 and 6.2, AdvaBuild 3.7 SP1 and SP2, OPCServer for MOD 300 (non-800xA) 1.4, OPC Data Link 2.1 and 2.2, Knowledge Manager 8.0, 9.0 and 9.1, Manufacturing Operations Management 1812 and 1909, ABB AbilityTM SCADAvantage versions 5.1 to 5.6.5+ 1 more
    • (no CPE)range: versions 5.1, 6.0 and 6.1, Compact HMI versions 5.1 and 6.0, Control Builder Safe 1.0, 1.1 and 2.0, Symphony Plus -S+ Operations 3.0 to 3.2 Symphony Plus -S+ Engineering 1.1 to 2.2, Composer Harmony 5.1, 6.0 and 6.1, Melody Composer 5.3, 6.1/6.2 and SPE for Melody 1.0SPx (Composer 6.3), Harmony OPC Server (HAOPC) Standalone 6.0, 6.1 and 7.0, ABB Ability™ System 800xA/ Advant® OCS Control Builder A 1.3 and 1.4, Advant® OCS AC100 OPC Server 5.1, 6.0 and 6.1, Composer CTK 6.1 and 6.2, AdvaBuild 3.7 SP1 and SP2, OPCServer for MOD 300 (non-800xA) 1.4, OPC Data Link 2.1 and 2.2, Knowledge Manager 8.0, 9.0 and 9.1, Manufacturing Operations Management 1812 and 1909, ABB AbilityTM SCADAvantage versions 5.1 to 5.6.5
    • (no CPE)range: 5.1
  • ABB/ABB Ability™ SCADAvantagev5
    Range: 5.1
  • ABB/AdvaBuildv5
    Range: 3.7 SP1
  • ABB/Advant OCS AC 100 OPS Serverv5
    Range: 5.1
  • ABB/Advant OCS Control Builder Av5
    Range: 1.3
  • ABB/Composer CTKv5
    Range: 6.1
  • ABB/Composer Harmonyv5
    Range: 5.1
  • ABB/Composer Melodyv5
    Range: 5.3
  • Abb/Control Builder Safecpe-rescue
    Range: 1.0
  • ABB/Harmony OPC Server Standalonev5
    Range: 6.0
  • ABB/Knowledge Managerv5
    Range: 8.0
  • ABB/Manufacturing Operations Managementv5
    Range: 1812
  • ABB/OPC Data Linkv5
    Range: 2.1
  • ABB/OPC Server for Mod 300 (non-800xA)v5
    Range: 1.4
  • Abb/Symphony Plus S+ Engineeringcpe-rescue
    Range: 1.1
  • Abb/Symphony Plus S+ Operationscpe-rescue
    Range: 3

Patches

Vulnerability mechanics

References

3

News mentions

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