What’s Vulnerable › Vulnerabilities

CVE-2019-9689

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-12-03 · updated 2026-06-17
• Weakness: CWE-120

Description

process_certificate in tls1.c in Cameron Hamilton-Rich axTLS through 2.1.5 has a Buffer Overflow via a crafted TLS certificate handshake message with zero certificates.

Affected products

• Axtls Project Axtls: through 2.1.5

References

• http://axtls.sourceforge.net
• http://packetstormsecurity.com/files/155500/axTLS-2.1.5-Denial-Of-Service.html
• https://seclists.org/bugtraq/2019/Nov/44
• https://www.telekom.com/en/corporate-responsibility/data-protection-data-security/security/details/advisories-504842
• https://www.telekom.com/resource/blob/586428/51ae062269fbcb068bd20379f87f1398/dl-191121-critical-remote-denial-of-service-vulnerability-ii--data.pdf
• http://axtls.sourceforge.net
• http://packetstormsecurity.com/files/155500/axTLS-2.1.5-Denial-Of-Service.html
• https://seclists.org/bugtraq/2019/Nov/44
• https://www.telekom.com/en/corporate-responsibility/data-protection-data-security/security/details/advisories-504842
• https://www.telekom.com/resource/blob/586428/51ae062269fbcb068bd20379f87f1398/dl-191121-critical-remote-denial-of-service-vulnerability-ii--data.pdf

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