Name: CVE-2026-13122: Reachable Assertion
Creator: Rapid7
Published: 2026-07-06T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-13122, CWE-617, CVSS 5.3, EPSS 0.00458

OpenVPN version 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote attackers to cause a denial of service via a malformed authentication token that triggers a reachable assertion when external-auth is enabled

CVSS Details

CVSS 4.0 Base Score: 5.9 (MEDIUM)
CVSS 4.0 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:N/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)
CVSS 3.1 Base Score: 5.3
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Alpine Linux	—	Upgrade openvpn	Jul 14, 2026	Jul 6, 2026
Amazon_linux_2023	—	Upgrade openvpn-debuginfoUpgrade openvpn-debugsourceUpgrade openvpn-develUpgrade openvpn	Jul 21, 2026	Jul 6, 2026
Debian	—	Upgrade openvpn	Jul 5, 2026	Jul 5, 2026
Freebsd	—	Upgrade openvpn-develUpgrade openvpn	Jul 7, 2026	Jul 1, 2026
Ubuntu	—	Upgrade openvpn	Jul 15, 2026	Jul 14, 2026

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CVSS Details

Covered by Rapid7

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