TI-2024-05196 Aliases CVE-2024-5594 GHSA-f2h8-4w6p-535w

OpenVPN before 2.6.11 does not santize PUSH_REPLY messages properly which an attacker…

MEDIUM 49CWE-1287Published 2025-01-06 · Updated 2025-11-03

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

OpenVPN before 2.6.11 does not santize PUSH_REPLY messages properly which an attacker controlling the server can use to inject unexpected arbitrary data ending up in client logs.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00817 57th percentileScored 2026-11-07

Fix Fixed OpenVPN (OpenVPN): 2.6.11

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
OpenVPN	OpenVPN	before 2.6.11	2.6.11	Patch available	CNA

OpenVPN VendorOpenVPN Affected before 2.6.11 Fixed in 2.6.11 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:openvpn:openvpn:::::community:::*	2.6.0 to before 2.6.11	Vulnerable	OpenVPN

cpe:2.3:a:openvpn:openvpn:*:*:*:*:community:*:*:* Versions 2.6.0 to before 2.6.11 Vulnerable ·OpenVPN

Remediation

Fix · CNA OpenVPN (OpenVPN) Fixed in 2.6.11

Timeline

2026-10-02 Threatist record created from CVE-2024-5594
2026-10-03 Alias added: GHSA-f2h8-4w6p-535w

References

Advisory 1

https://community.openvpn.net/openvpn/wiki/CVE-2024-5594

Other 1

https://www.mail-archive.com/[email protected]/msg07634.html

TI-2014-04453 Unquoted Windows search path vulnerability in the ptservice service prior to… CVSS 3.1MEDIUM 5.3
TI-2022-00467 Authentication bypass in OpenVPN CVSS 3.1CRITICAL 9.8
TI-2024-18509 Unrestricted file upload in OpenVPN 2 CVSS 3.1CRITICAL 9.8
TI-2024-16468 The interactive service in OpenVPN 2.6.9 and earlier allows the OpenVPN service pipe to… CVSS 3.1HIGH 7.5
TI-2023-25309 Use after free in OpenVPN 2 CVSS 3.1CRITICAL 9.8
TI-2018-05453 A cross-protocol scripting issue was discovered in the management interface in OpenVPN… CVSS 3.0CRITICAL 9.1

See all 48 →

Sources

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