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Vulnerability details: VCID-3774-6bd4-8qcs
Vulnerability ID VCID-3774-6bd4-8qcs
Aliases CVE-2021-44718
Summary wolfSSL through 5.0.0 allows an attacker to cause a denial of service and infinite loop in the client component by sending crafted traffic from a Machine-in-the-Middle (MITM) position. The root cause is that the client module accepts TLS messages that normally are only sent to TLS servers.
Status Published
Exploitability 0.5
Weighted Severity 0.0
Risk None
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2021-44718
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2021-44718
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2021-44718
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2021-44718
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2021-44718
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2021-44718
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2021-44718
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2021-44718
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2021-44718
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2021-44718
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2021-44718
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2021-44718
epss 0.00206 https://api.first.org/data/v1/epss?cve=CVE-2021-44718
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2021-44718
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44718
https://github.com/wolfSSL/wolfssl/releases
https://www.wolfssl.com/docs/security-vulnerabilities/
CVE-2021-44718 https://nvd.nist.gov/vuln/detail/CVE-2021-44718
No exploits are available.
There are no known vectors.
Exploit Prediction Scoring System (EPSS)
Percentile 0.42779
EPSS Score 0.00206
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T16:35:09.998886+00:00 Debian Oval Importer Import https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.0.0