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No exploitation reportedFix available

CVE-2020-11713

No exploitation reported by the sources we read.

  • Published2020-04-12
  • WeaknessCWE-203

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2020-04-1217:15CVE publishedNVD

Versions per branch

NVD
Wolfssl
BranchAffectedFixed in
4.3= 4.3.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • wolfsslUbuntu:20.04:LTSall versions · no fixed version listed
  • wolfsslUbuntu:18.04:LTSall versions · no fixed version listed
  • wolfsslUbuntu:16.04:LTSall versions · no fixed version listed
  • wolfsslDebian:13all versions · fixed in 4.4.0+dfsg-1
  • wolfsslDebian:12all versions · fixed in 4.4.0+dfsg-1

Full record on NVD

Fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
2020-04-12
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-8934-73x5-7j23

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.

Is CVE-2020-11713 actively exploited?

Active exploitation of CVE-2020-11713 has not been confirmed. Its EPSS score was 2.0% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-11713?

CVE-2020-11713 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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