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Vulnerability DatabaseCVE-2026-88964

CVE-2026-88964: 
OpenVPN vulnerability analysis and mitigation

An integer underflow in OpenVPN version 2.7_alpha3 through 2.7.7 on Windows and Android allows remote authenticated servers to cause a denial of service or memory disclosure via crafted domain search options

Linux Distribution fix status

Fix availability across major Linux distributions and their releases.

Debian

Fixed

bookworm

openvpn

Affected

sid

openvpn: 2.7.8-1

Fixed

trixie

openvpn

Affected

Ubuntu

Unknown

bionic (esm-infra)

openvpn

Not Affected

devel

openvpn

Not Affected

focal (esm-infra)

openvpn

Not Affected

jammy

openvpn

Not Affected

noble

openvpn

Not Affected

resolute

openvpn

Not Affected

trusty (esm-infra-legacy)

openvpn

Not Affected

xenial (esm-infra-legacy)

openvpn

Not Affected

Source: NVD

Related OpenVPN vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-84732HIGH8.7
  • OpenVPN logoOpenVPN
  • openvpn-devel
NoYesSep 07, 2026
CVE-2026-84790HIGH7.6
  • OpenVPN logoOpenVPN
  • openvpn
NoYesOct 13, 2026
CVE-2026-84471HIGH7.2
  • OpenVPN logoOpenVPN
  • openvpn
NoYesOct 14, 2026
CVE-2026-88964HIGH7.1
  • OpenVPN logoOpenVPN
  • openvpn
NoYesOct 13, 2026
CVE-2026-82325MEDIUM6.8
  • OpenVPN logoOpenVPN
  • openvpn
NoNoSep 07, 2026

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