Vulnerability · Published Oct 14, 2026 · Assigned by OpenVPN
CVE-2026-84471
High 7.2
In plain English
A high-severity use-after-free in OpenVPN from OpenVPN. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 4.0)7.2High
Exploit odds (30 days)0.4%top 64.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
The fix for CVE-2026-12996 was incomplete. A use-after-free in OpenVPN 2.6.0 through 2.6.22 and 2.7_alpha1 through 2.7.7 allows remote authenticated peers to potentially cause a denial of service or leak memory via crafted packets during TLS session promotion or expiry.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | openvpn | no fix listed | DEBIAN-CVE-2026-84471 |
| Debian:13 | openvpn | no fix listed | DEBIAN-CVE-2026-84471 |
| Debian:14 | openvpn | 2.7.7-1 | DEBIAN-CVE-2026-84471 |
| Ubuntu:22.04:LTS | openvpn | 2.5.11-0ubuntu0.22.04.5 | UBUNTU-CVE-2026-84471 |
| Ubuntu:22.04:LTS | openvpn | 2.5.11-0ubuntu0.22.04.5 | USN-8852-1 |
| Ubuntu:24.04:LTS | openvpn | 2.6.19-0ubuntu0.24.04.4 | USN-8852-1 |
| Ubuntu:24.04:LTS | openvpn | 2.6.19-0ubuntu0.24.04.4 | UBUNTU-CVE-2026-84471 |
| Ubuntu:26.04:LTS | openvpn | 2.7.0-1ubuntu1.3 | USN-8852-1 |
| Ubuntu:26.04:LTS | openvpn | 2.7.0-1ubuntu1.3 | UBUNTU-CVE-2026-84471 |
Affected products (as reported)
Weakness: CWE-416 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N