OpenVPN version 2.3.12 and newer is vulnerable to unauthenticated Denial of Service of server via received large control packet.

Published 9 y ago 2017-05-15 · modified 4 mo ago 2026-06-17 · JSON

CVSS

7.5

v3.0 · NVD

CISA KEV

not known exploited

EPSS

13.8%

percentile 97%

Public exploits

Exploit-DB

OpenVPN version 2.3.12 and newer is vulnerable to unauthenticated Denial of Service of server via received large control packet. Note that this issue is fixed in 2.3.15 and 2.4.2.

Exploit prediction (EPSS)

13.78% probability of exploitation in the next 30 days, higher than 97% of all scored CVEs.

Exploits and detections

EDB-41993 OpenVPN 2.4.0 - Denial of Service · dos · 2017-05-11

CVSS scores

Assigned by	Version	Score	Vector
NVD	3.0	7.5	`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`
NVD	2.0	5.0	`AV:N/AC:L/Au:N/C:N/I:N/A:P`

Affected products

OpenVPN Technologies, Inc openvpn

Classification

Weakness

CWE-617 Reachable Assertion
CWE-20 Improper Input Validation

References

exploit-db.com /exploits/41993/ · exploit, x_refsource_EXPLOIT-DB, x_transferred
community.openvpn.net /openvpn/wiki/QuarkslabAndCryptographyEngineerAudits · x_refsource_CONFIRM, x_transferred
securitytracker.com /id/1038473 · vdb-entry, x_refsource_SECTRACK, x_transferred
securityfocus.com /bid/98444 · vdb-entry, x_refsource_BID, x_transferred

Sources

CVE List: CVE-2017-7478
NVD: CVE-2017-7478

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.

Summary