What is CVE-2017-7508?

CVE-2017-7508 is a high-severity vulnerability in Openvpn, classified under Reachable Assertion. CVSS score: 7.5/10. Published 2017-06-27.

How severe is CVE-2017-7508?

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

Vulnerability in Openvpn

CVE-2017-7508

OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to remote denial-of-service when receiving malformed IPv6 packet.

Published 2017-06-27 · 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:N/A:H.

EPSS exploit prediction

EPSS: 0.048 (91.6th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 91.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.048 · newest: 0.048 · change: 0.000

Affected products

Openvpn — versions 2.4.0, 2.4.1, 2.4.2
Openvpn Technologies, Inc — versions before 2.3.17, before 2.4.3

Weakness classification (CWE)

CWE-617 — Reachable Assertion

References

community.openvpn.net/openvpn/wiki/VulnerabilitiesFixedInOpenVPN243 (Vendor Advisory)
www.securitytracker.com/id/1038768 (vdb-entry)
www.securityfocus.com/bid/99230 (VDB Entry, Third Party Advisory, vdb-entry)
www.debian.org/security/2017/dsa-3900 (vendor-advisory)

Frequently asked questions

What is CVE-2017-7508?: CVE-2017-7508 is a high-severity vulnerability in Openvpn, classified under Reachable Assertion. CVSS score: 7.5/10. Published 2017-06-27.
How severe is CVE-2017-7508?: High severity. CVSS v3 base score is 7.5 out of 10.