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TI-2024-18276 Aliases CVE-2024-27459GHSA-f6v5-hjxr-p24j

Stack-based buffer overflow in OpenVPN GUI

Priority MEDIUM 47CWE-121Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.

Summary

The interactive service in OpenVPN 2.6.9 and earlier allows an attacker to send data causing a stack overflow which can be used to execute arbitrary code with more privileges.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0826 94th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
OpenVPNOpenVPN GUIup to 2.6.9—No fix listedCNA
  • OpenVPN GUI VendorOpenVPN Affected up to 2.6.9 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:openvpn:openvpn:*:*:*:*:community:*:*:*before 2.5.10; 2.6.0 to before 2.6.10VulnerableOpenVPN
  • cpe:2.3:a:openvpn:openvpn:*:*:*:*:community:*:*:* Versions before 2.5.10; 2.6.0 to before 2.6.10 Vulnerable ·OpenVPN

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-27459
  2. 2026-10-03 Alias added: GHSA-f6v5-hjxr-p24j

References

Advisory 2

Other 1

  • 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-2024-05196 OpenVPN before 2.6.11 does not santize PUSH_REPLY messages properly which an attacker… CVSS 3.1CRITICAL 9.1
See all 48 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences