CVE-2020-11713

Name: CVE-2020-11713
Creator: NVD / NIST
Published: 2020-04-12T17:15:10.877+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.96%

Last modified Jun 17, 2026

CVE-2020-11713 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. wolfSSL 4.3.0 has mulmod code in wc_ecc_mulmod_ex in ecc.c that does not properly resist timing side-channel attacks.. EPSS estimates a 1.96% chance of exploitation in the next 30 days.

Description

wolfSSL 4.3.0 has mulmod code in wc_ecc_mulmod_ex in ecc.c that does not properly resist timing side-channel attacks.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.96%

77.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-203

Affected Software

Vendor	Product	Versions
Wolfssl	Wolfssl	4.3.0

References

https://gist.github.com/pietroborrello/7c5be2d1dc15349c4ffc8671f0aad04fExploit, Third Party Advisory
https://github.com/wolfSSL/wolfssl/pull/2894/Patch, Third Party Advisory
https://gist.github.com/pietroborrello/7c5be2d1dc15349c4ffc8671f0aad04fExploit, Third Party Advisory
https://github.com/wolfSSL/wolfssl/pull/2894/Patch, Third Party Advisory

Timeline

Published: Apr 12, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-11713?

wolfSSL 4.3.0 has mulmod code in wc_ecc_mulmod_ex in ecc.c that does not properly resist timing side-channel attacks.

How severe is CVE-2020-11713?

CVE-2020-11713 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.96% probability of exploitation in the next 30 days.

How do I fix CVE-2020-11713?

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-2020-11713?

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

Scan your code now

Source: NVD / NIST