What is CVE-2017-8855?

CVE-2017-8855 is a high-severity vulnerability in Wolfssl. CVSS score: 7.5/10. Published 2017-05-09.

How severe is CVE-2017-8855?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Wolfssl

CVE-2017-8855

wolfSSL before 3.11.0 does not prevent wc_DhAgree from accepting a malformed DH key.

Published 2017-05-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.011 (64.8th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 65th percentile — 64.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Wolfssl

References

github.com/wolfSSL/wolfssl/releases/tag/v3.11.0-stable (Patch, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2017-8855?: CVE-2017-8855 is a high-severity vulnerability in Wolfssl. CVSS score: 7.5/10. Published 2017-05-09.
How severe is CVE-2017-8855?: High severity. CVSS v3 base score is 7.5 out of 10.