CVE-2020-11656
View CSAF Summary ABB became aware of vulnerability in the product versions listed as affected in the advisory. An update is available that replaces an outdated third-party component. Although no s...
Affects 12 products across 7 vendors.
Software references memory after it has been freed, leading to corruption, crashes, or code execution.
ABB B&R Automation Studio is affected by a vulnerability that could allow unauthorized access, data exposure, or remote code execution. The CVSS score of 9.8 indicates a critical severity level. No public proof-of-concept or known exploits exist, but the potential impact is significant.
BSID: BS-2026-GLOBAL-144214-C • Model: Qwen/Qwen2.5-72B-Instruct-AWQ • Confidence: HIGH
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| CVE ID | CVE-2020-11656 |
|---|---|
| BSID | BS-2026-GLOBAL-144214-C BreachSpider Global ID |
| CVSS Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Published | 2026-05-21 |
| Last Modified | 2026-05-21 |
| ICS Relevance | 55% |
| Weakness (CWE) | |
| Verticals | |
| Source | NVD |
View CSAF Summary ABB became aware of vulnerability in the product versions listed as affected in the advisory. An update is available that replaces an outdated third-party component. Although no successful exploitation was observed during testing of the affected B&R products, the identified vulnerabilities could present potential attack vectors that might enable unauthorized access, data exposure, or remote code execution. The following versions of ABB B&R Automation Studio are affected: B&R Au
Source: NIST NVD / MITRE CVE Database
The vulnerability can be exploited remotely without authentication, requiring low skill level. It affects multiple versions of ABB B&R Automation Studio and could lead to unauthorized access, data exposure, or remote code execution.
Exploitation Likelihood: MEDIUM
| Vendor | Product | Fixed Version |
|---|---|---|
| Fujitsu-Siemens | — | — |
| Netapp | Ontap Select Deploy Administration Utility | — |
| Oracle | Enterprise Manager Ops Center | — |
| Oracle | Communications Messaging Server | — |
| Oracle | Mysql Workbench | — |
| Oracle | Hyperion Infrastructure Technology | — |
| Oracle | Zfs Storage Appliance Kit | — |
| Oracle | Communications Network Charging And Control | — |
| Oracle | Mysql | — |
| Oracle | Outside In Technology | — |
| Rockwell Automation | — | — |
| Siemens | Sinec Infrastructure Network Services | — |
| Sqlite | Sqlite | — |
| Tenable | Tenable.Sc | — |
| CISA KEV | Not in KEV catalog |
|---|---|
| Public Exploit | Not confirmed |
| PoC Code | Not confirmed |
Implement network segmentation and restrict access to the ABB B&R Automation Studio to only trusted networks and users.
No reliable network detection signature exists for this vulnerability class — apply the compensating controls above and the vendor patch. SAGE only publishes a network rule when a concrete on-the-wire signature can be grounded in the advisory.
This CVE could allow unauthorized access to critical systems, violating the requirement for securing electronic access to control system networks.
This vulnerability impacts the ability to prevent unauthorized access to the control system, which is a key requirement under IEC 62443-3-3.
Virtual patch generated by CITED Relevance SAGE. Validate in isolated environment before production deployment. Compensating control only - does not replace vendor patch.
SAGE Enrichment Record — provenance & audit hash
| Model | Qwen/Qwen2.5-72B-Instruct-AWQ |
|---|---|
| Confidence | HIGH |
| Enriched At | 2026-05-24 |
| SHA-512 Audit Hash | 5213905cf5f3df3ab44932fc240d8099f4eee64b0e2787dbec6b7792fba869a487f747f2cc1eca53f0cbb9bce7baa8b6880d821ab300ef09e04c18d7ecb1f46c |
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