CVE-2021-24116

4.9 mediumEPSS 1.2%

Medium (4.9) in wolfssl wolfssl. EPSS 1.2% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

4.9 medium

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

EPSS: 1.2% chance of exploitation in the next 30 days; higher than 68% of CVEs (scores of 2026-10-31)
CWE: CWE-203
Published: 2021-07-14
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

wolfssl:wolfssl

References

https://github.com/UzL-ITS/util-lookup/blob/main/cve-vulnerability-publication.md
https://github.com/wolfSSL/wolfssl/releases
https://github.com/UzL-ITS/util-lookup/blob/main/cve-vulnerability-publication.md
https://github.com/wolfSSL/wolfssl/releases

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