Denial of service in wolfSSL

Published: 2022-09-30 | Updated: 2022-10-30
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-39173
Exploitation vector Network
Public exploit N/A
Vulnerable software
Universal components / Libraries / Libraries used by multiple products

Vendor wolfSSL

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Buffer overflow

EUVDB-ID: #VU67767

Risk: Medium


CVE-ID: CVE-2022-39173

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error when processing TLS 1.3 protocol requests with session tickets. A remote attacker can send a specially crafted ClientHello packet to the affected server, trigger a buffer overflow and perform a denial of service (DoS) attack.


Install updates from vendor's website.

Vulnerable software versions

wolfSSL: 5.0.0 - 5.5.0

CPE2.3 External links

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?