🛡️ CVE-2026-35058 on Ubuntu — openvpn

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Improper validation of packet length during tls-crypt-v2 key extraction in OpenVPN 2.6.0 through 2.6.19 and 2.7_alpha1 through 2.7.1 allows authenticated attackers to trigger a fatal assertion and cause a denial of service via a specially crafted packet.

Distribution advisory

This page covers CVE-2026-35058 as tracked by Ubuntu, for the package openvpn. The fix is available in version 2.7.0-1ubuntu1.1; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs low-level privileges on the target. A user must be tricked into taking some action. Rated impact: confidentiality none, integrity none, availability high.

Affected software and timeline

Affected software: openvpn (fixed in 2.7.0-1ubuntu1.1). Published on 23 April 2026 and last revised on 12 June 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

ubuntu.com (Report)
www.cve.org (Report)
community.openvpn.net (Report)
ubuntu.com (Advisory)

CVE-2026-35058 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-04-23
Updated 2026-08-11
Modified 2026-06-12
Fix URL N/A

Affected Packages

Software From version Fixed in
openvpn — 2.7.0-1ubuntu1.1

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More UBUNTU CVE 2026 advisories

Part of UBUNTU CVE 2026 in the advisory index.