# CVE-2025-11955

## Summary

- **CVE ID:** CVE-2025-11955
- **Severity:** HIGH
- **CVSS Score:** 8.2 (CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N)
- **CWE:** CWE-299
- **Published:** Oct 27, 2025
- **Last Modified:** Mar 12, 2026

## Description

Incorrect validation of OCSP certificates vulnerability in TheGreenBow VPN, versions 7.5 and 7.6. During the IKEv2 authentication step, the OCSP-enabled VPN client establishes the tunnel even if it does not receive an OCSP response or if the OCSP response signature is invalid.

## Affected Products

- TheGreenBow — TheGreenBow VPN Client Windows Enterprise (7.5)
- TheGreenBow — TheGreenBow VPN Client Windows Enterprise (7.6)

## References

- [CNA](https://www.incibe.es/en/incibe-cert/notices/aviso/incorrect-validation-ocsp-certificates-thegreenbow-vpn-client-windows)
- [CNA](https://www.thegreenbow.com/en/support/security-alerts/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.26%
- **EPSS Percentile:** 17.2

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._