CVE-2021-27434
Severity Score
7.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
Products with Unified Automation .NET based OPC UA Client/Server SDK Bundle: Versions V3.0.7 and prior (.NET 4.5, 4.0, and 3.5 Framework versions only) are vulnerable to an uncontrolled recursion, which may allow an attacker to trigger a stack overflow.
Productos con el programa Unified Automation .NET based OPC UA Client/Server SDK Bundle: Versiones V3.0.7 y anteriores (solo versiones de .NET 4.5, 4.0 y 3.5 Framework) son vulnerables a una recursividad no controlada, que puede permitir a un atacante desencadenar un desbordamiento de pila
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2021-02-19 CVE Reserved
- 2021-05-20 CVE Published
- 2024-02-03 EPSS Updated
- 2024-08-03 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
- CWE-674: Uncontrolled Recursion
CAPEC
References (1)
| URL | Tag | Source |
|---|---|---|
| https://us-cert.cisa.gov/ics/advisories/icsa-21-133-04 | Third Party Advisory |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
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Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Unified-automation Search vendor "Unified-automation" | .net Based Opc Ua Client\/server Sdk Search vendor "Unified-automation" for product ".net Based Opc Ua Client\/server Sdk" | <= 3.0.7 Search vendor "Unified-automation" for product ".net Based Opc Ua Client\/server Sdk" and version " <= 3.0.7" | - |
Affected
| in | Microsoft Search vendor "Microsoft" | .net Framework Search vendor "Microsoft" for product ".net Framework" | 3.5 Search vendor "Microsoft" for product ".net Framework" and version "3.5" | - |
Safe
|
| Unified-automation Search vendor "Unified-automation" | .net Based Opc Ua Client\/server Sdk Search vendor "Unified-automation" for product ".net Based Opc Ua Client\/server Sdk" | <= 3.0.7 Search vendor "Unified-automation" for product ".net Based Opc Ua Client\/server Sdk" and version " <= 3.0.7" | - |
Affected
| in | Microsoft Search vendor "Microsoft" | .net Framework Search vendor "Microsoft" for product ".net Framework" | 4.0 Search vendor "Microsoft" for product ".net Framework" and version "4.0" | - |
Safe
|
| Unified-automation Search vendor "Unified-automation" | .net Based Opc Ua Client\/server Sdk Search vendor "Unified-automation" for product ".net Based Opc Ua Client\/server Sdk" | <= 3.0.7 Search vendor "Unified-automation" for product ".net Based Opc Ua Client\/server Sdk" and version " <= 3.0.7" | - |
Affected
| in | Microsoft Search vendor "Microsoft" | .net Framework Search vendor "Microsoft" for product ".net Framework" | 4.5 Search vendor "Microsoft" for product ".net Framework" and version "4.5" | - |
Safe
|