CVE-2021-33720
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
A vulnerability has been identified in SIPROTEC 5 relays with CPU variants CP050 (All versions < V8.80), SIPROTEC 5 relays with CPU variants CP100 (All versions < V8.80), SIPROTEC 5 relays with CPU variants CP300 (All versions < V8.80). Specially crafted packets sent to port 4443/tcp could cause a Denial-of-Service condition.
Se ha identificado una vulnerabilidad en los relés SIPROTEC 5 con variantes de CPU CP050 (Todas las versiones anteriores a V8.80), relés SIPROTEC 5 con variantes de CPU CP100 (Todas las versiones anteriores a V8.80), relés SIPROTEC 5 con variantes de CPU CP300 (Todas las versiones anteriores a V8.80). Los paquetes especialmente diseñados enviados al puerto 4443/tcp podrían causar una condición de denegación de servicio
*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
- 2021-05-28 CVE Reserved
- 2021-09-14 CVE Published
- 2024-05-30 EPSS Updated
- 2024-08-03 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CAPEC
References (1)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://cert-portal.siemens.com/productcert/pdf/ssa-847986.pdf | 2021-12-14 |
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Siemens Search vendor "Siemens" | Siprotec 5 With Cpu Variant Cp050 Search vendor "Siemens" for product "Siprotec 5 With Cpu Variant Cp050" | < 8.80 Search vendor "Siemens" for product "Siprotec 5 With Cpu Variant Cp050" and version " < 8.80" | - |
Affected
| ||||||
| Siemens Search vendor "Siemens" | Siprotec 5 With Cpu Variant Cp100 Search vendor "Siemens" for product "Siprotec 5 With Cpu Variant Cp100" | < 8.80 Search vendor "Siemens" for product "Siprotec 5 With Cpu Variant Cp100" and version " < 8.80" | - |
Affected
| ||||||
| Siemens Search vendor "Siemens" | Siprotec 5 With Cpu Variant Cp300 Search vendor "Siemens" for product "Siprotec 5 With Cpu Variant Cp300" | < 8.80 Search vendor "Siemens" for product "Siprotec 5 With Cpu Variant Cp300" and version " < 8.80" | - |
Affected
| ||||||