PT-2026-36643 · Openvpn · Openvpn

Published 2026-04-20 · Updated 2026-05-20 · CVE-2026-35058

Positive Technologies (AI Summary)

CVSS v2.0

6.8

Medium

Base vector

AV:N/AC:L/Au:S/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions OpenVPN (affected versions not specified)

Description An issue exists in the tls crypt v2 extract client key() function where an uncontrolled assertion is reachable. A remote attacker can trigger a denial of service by sending a suitably malformed packet containing a valid tls-crypt-v2 key, causing the server to execute an ASSERT() failure.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Assertion Failure

Weakness Enumeration

CWE-617

Related Identifiers

BDU:2026-07108

CVE-2026-35058

MGASA-2026-0126

USN-8286-1

Affected Products

Openvpn

References · 16

• https://osv.dev/vulnerability/UBUNTU-CVE-2026-35058 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-8286-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-35058 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-35058 · Security Note
• https://osv.dev/vulnerability/USN-8286-1 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2026-0126.html · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-35058 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-40215 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-35058 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/SFR4RR6F447AZK2ZTKVGZP3NKKWFW6DW · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-07108 · Security Note
• https://osv.dev/vulnerability/MGASA-2026-0126 · Vendor Advisory
• https://bugs.mageia.org/show_bug.cgi?id=35442 · Note
• https://talosintelligence.com/vulnerability_reports/TALOS-2026-2381 · Note
• https://community.openvpn.net/Security%20Announcements/CVE-2026-40215 · Note