What is CVE-2019-8981?

CVE-2019-8981 is a critical-severity vulnerability in Axtls Project, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2019-03-26.

How severe is CVE-2019-8981?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Axtls Project

CVE-2019-8981

tls1.c in Cameron Hamilton-Rich axTLS before 2.1.5 has a Buffer Overflow via a crafted sequence of TLS packets because the need_bytes value is mismanaged.

Vulnerability class: Buffer Overflow

Published 2019-03-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.027 (85.3th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 85.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.027 · newest: 0.027 · change: 0.000

Affected products

Axtls Project

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

axtls.sourceforge.net (Product, Third Party Advisory)
www.telekom.com/en/corporate-responsibility/data-protection-data-security/secur… (Patch, Third Party Advisory)
www.telekom.com/resource/blob/566546/276aaa2eab781729f2544d62edecf002/dl-190322… (Exploit, Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2019-8981?: CVE-2019-8981 is a critical-severity vulnerability in Axtls Project, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2019-03-26.
How severe is CVE-2019-8981?: Critical severity. CVSS v3 base score is 9.8 out of 10.