// For flags

CVE-2023-37557

CODESYS Heap-based Buffer Overflow in multiple products

Severity Score

6.5
*CVSS v3.1

Exploit Likelihood

< 1%
*EPSS

Affected Versions

16
*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

After successful authentication as a user in multiple Codesys products in multiple versions, specific crafted remote communication requests can cause the CmpAppBP component to overwrite a heap-based buffer, which can lead to a denial-of-service condition.

Después de una autenticación exitosa como usuario en múltiples productos Codesys en múltiples versiones, solicitudes de comunicación remota diseñadas específicamente pueden hacer que el componente CmpAppBP sobrescriba un desbordamiento de búfer, lo que puede conducir a una condición de denegación de servicio.

*Credits: Vladimir Tokarev, Section 52, Azure IoT Security at Microsoft
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
Single
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2023-07-07 CVE Reserved
  • 2023-08-03 CVE Published
  • 2024-10-09 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-787: Out-of-bounds Write
CAPEC
References (1)
URL Date SRC
URL Date SRC
URL Date SRC
Affected Vendors, Products, and Versions (16)