SecuriTricks - CVE-2026-35058

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.

Product(s) Impacted

Vendor	Product	Versions
Openvpn	Openvpn	2.6.0-2.6.19, 2.7_alpha1-2.7.1

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-617

Reachable Assertion

The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
a	openvpn	openvpn	2.6.0-2.6.19	/	/	/	/	/	/	/
a	openvpn	openvpn	2.7_alpha1-2.7.1	/	/	/	/	/	/	/

References

https://community.openvpn.net/ReleaseHistory#openvpn-2620-released-22-april-2026

https://community.openvpn.net/ReleaseHistory#openvpn-272-released-22-april-2026

https://community.openvpn.net/Security%20Announcements/CVE-2026-35058

https://www.talosintelligence.com/vulnerability_reports/TALOS-2026-2381

CVSS Score

6.9 / 10

CVSS Data - 4.0

Attack Vector: NETWORK
Attack Complexity: HIGH
Attack Requirements: PRESENT
Privileges Required: LOW
User Interaction: PASSIVE
Scope:
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: HIGH
Exploit Maturity: NOT_DEFINED

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

View Vector String

Timeline

Published: June 8, 2026, 8:17 p.m.
Last Modified: June 9, 2026, 2:08 a.m.

Status : Awaiting Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

[email protected]

CVE-2026-35058