Use After Free in Openvpn Access Server
CVE-2023-46850
Use after free in OpenVPN version 2.6.0 to 2.6.6 may lead to undefined behavoir, leaking memory buffers or remote execution when sending network buffers to a remote peer.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.020 (80.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000
Affected products
- Openvpn Access Server — versions 2.11.0, 2.12.0
- Openvpn
- Openvpn 2 (Community) — versions 2.6.0
- Openvpn Access Server
- Debian Linux — versions 12.0
- Fedoraproject Fedora — versions 39
Weakness classification (CWE)
References
- community.openvpn.net/openvpn/wiki/CVE-2023-46850 (Vendor Advisory)
- openvpn.net/security-advisory/access-server-security-update-cve-2023-46849-cve-… (Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2023-46850?
- CVE-2023-46850 is a critical-severity vulnerability in Openvpn Access Server, classified under Use After Free. CVSS score: 9.8/10. Published 2023-11-11.
- How severe is CVE-2023-46850?
- Critical severity. CVSS v3 base score is 9.8 out of 10.