CVE-2020-36422
MEDIUM
5.3
CVSS Score
Published: July 19, 2021 at 12:00 AM UTC
Updated: June 17, 2026 at 03:15 AM UTC
2 products affected across 2 vendorsDebian Linuxmbed TLS
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Severity
MEDIUM5.3
Exploit prediction
EPSS 1%
Description
An issue was discovered in Arm Mbed TLS before 2.23.0. A side channel allows recovery of an ECC private key, related to mbedtls_ecp_check_pub_priv, mbedtls_pk_parse_key, mbedtls_pk_parse_keyfile, mbedtls_ecp_mul, and mbedtls_ecp_mul_restartable.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 2.16.72.17.0 ≤ v < 2.23.0
Affected range stops below 2.16.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.23.0, so it looks safe — our inference, not a vendor statement
Debian Linux· Debiandrupal
95%Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (4)
Release NotesThird Party Advisory
Source: [email protected]
https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.7Release NotesThird Party Advisory
Source: [email protected]
https://github.com/ARMmbed/mbedtls/releases/tag/v2.23.0Mailing ListThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2022/12/msg00036.htmlCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- LOW
- Integrity
- NONE
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-203
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