CVE-2019-19960

Name: CVE-2019-19960
Creator: NVD / NIST
Published: 2019-12-25T00:15:10.757+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.95%

Last modified Jun 17, 2026

CVE-2019-19960 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. In wolfSSL before 4.3.0, wc_ecc_mulmod_ex does not properly resist side-channel attacks.. EPSS estimates a 0.95% chance of exploitation in the next 30 days.

Description

In wolfSSL before 4.3.0, wc_ecc_mulmod_ex does not properly resist side-channel attacks.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

0.95%

56.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Wolfssl	Wolfssl	< 4.3.0

References

https://github.com/wolfSSL/wolfssl/commit/5ee9f9c7a23f8ed093fe1e42bc540727e96cebb8Patch, Third Party Advisory
https://github.com/wolfSSL/wolfssl/releases/tag/v4.3.0-stableRelease Notes, Third Party Advisory
https://github.com/wolfSSL/wolfssl/commit/5ee9f9c7a23f8ed093fe1e42bc540727e96cebb8Patch, Third Party Advisory
https://github.com/wolfSSL/wolfssl/releases/tag/v4.3.0-stableRelease Notes, Third Party Advisory

Timeline

Published: Dec 25, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-19960?

In wolfSSL before 4.3.0, wc_ecc_mulmod_ex does not properly resist side-channel attacks.

How severe is CVE-2019-19960?

CVE-2019-19960 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.95% probability of exploitation in the next 30 days.

How do I fix CVE-2019-19960?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-19960?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST