CVE-2021-24116

MEDIUM
4.9
CVSS Score
Published: July 14, 2021 at 12:47 PM UTC
Updated: June 17, 2026 at 03:39 AM UTC
1 product affected across 1 vendorwolfSSL

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Severity
MEDIUM4.9
Exploit prediction
EPSS 1%

Description

In wolfSSL through 4.6.0, a side-channel vulnerability in base64 PEM file decoding allows system-level (administrator) attackers to obtain information about secret RSA keys via a controlled-channel and side-channel attack on software running in isolated environments that can be single stepped, especially Intel SGX.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 4.6.0
Affected range stops below 4.6.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

x_refsource_CONFIRMRelease NotesThird Party Advisory
https://github.com/wolfSSL/wolfssl/releases

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-203

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