CVE-2017-7522
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.
Does this matter?
Lower severity and a low EPSS score (5.54%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.0
- 6.5 MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 5.54% probability · 93th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20, CWE-476
- Affected
- openvpn/openvpn
- Source
- secalert@redhat.com
EPSS 5.5% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.securityfocus.com/bid/99230Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1038768
- https://community.openvpn.net/openvpn/wiki/VulnerabilitiesFixedInOpenVPN243Vendor Advisory
- http://www.securityfocus.com/bid/99230Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1038768
- https://community.openvpn.net/openvpn/wiki/VulnerabilitiesFixedInOpenVPN243Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.