CVE-2017-7522

medium

Published 2017-06-27 · Modified 2026-05-13

CVSS v3

6.5

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

VIR risk

6.5

Description

OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to denial-of-service by authenticated remote attacker via sending a certificate with an embedded NULL character.

Predictions

Exploit likelihood

75%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No vendor mitigations ingested yet for this CVE. The mitigation-content worker queues fetches as references arrive — check back in a few minutes, or see the references list below.

OS impact

OS	Version	Status	Fixed in
arch		fixed	`2.4.3-1`
sles		affected
debian	bookworm	fixed	`2.4.3-1`
debian	bullseye	fixed	`2.4.3-1`
debian	forky	fixed	`2.4.3-1`
debian	sid	fixed	`2.4.3-1`
debian	trixie	fixed	`2.4.3-1`

Application impact

Vendor	Product	Versions
openvpn	openvpn	`{"endIncluding":"2.3.16"}`
openvpn	openvpn	`2.4.0`
openvpn	openvpn	`2.4.1`
openvpn	openvpn	`2.4.2`

References

CWEs

CWE-20 CWE-476

💬 Discuss CVE-2017-7522 on VIR Community →

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.