// For flags

CVE-2020-36421

Gentoo Linux Security Advisory 202301-08

Severity Score

5.3
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

An issue was discovered in Arm Mbed TLS before 2.23.0. Because of a side channel in modular exponentiation, an RSA private key used in a secure enclave could be disclosed.

Se ha detectado un problema en Arm Mbed TLS versiones anteriores a 2.23.0. Debido a un canal lateral en la exponenciación modular, una clave privada RSA usada en un enclave seguro podría ser divulgada

Multiple vulnerabilities have been discovered in Mbed TLS, the worst of which could result in arbitrary code execution. Versions less than 2.28.1 are affected.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2021-07-19 CVE Reserved
  • 2021-07-19 CVE Published
  • 2025-11-21 EPSS Updated
  • 2025-12-03 CVE Updated
  • 2025-12-03 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-203: Observable Discrepancy
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Arm
Search vendor "Arm"
 Mbed Tls
Search vendor "Arm" for product "Mbed Tls"
 < 2.16.7
Search vendor "Arm" for product "Mbed Tls" and version " < 2.16.7"
-
Affected
Arm
Search vendor "Arm"
 Mbed Tls
Search vendor "Arm" for product "Mbed Tls"
 >= 2.17.0 < 2.23.0
Search vendor "Arm" for product "Mbed Tls" and version " >= 2.17.0 < 2.23.0"
-
Affected
Debian
Search vendor "Debian"
 Debian Linux
Search vendor "Debian" for product "Debian Linux"
 10.0
Search vendor "Debian" for product "Debian Linux" and version "10.0"
-
Affected