CVE-2019-9689
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.48%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.48% probability · 74th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-120
- Affected
- axtls project/axtls
- Source
- cve@mitre.org
EPSS 1.5% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://axtls.sourceforge.netProduct
- http://packetstormsecurity.com/files/155500/axTLS-2.1.5-Denial-Of-Service.htmlThird Party Advisory, VDB Entry
- 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.netProduct
- http://packetstormsecurity.com/files/155500/axTLS-2.1.5-Denial-Of-Service.htmlThird Party Advisory, VDB Entry
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.