High 8.2Published Oct 27, 2025

CVE-2025-11955Incorrect validation of OCSP certificates in TheGreenBow VPN Client Windows Enterprise

Updated under an hour ago (Oct 27, 2026, 6:50 AM ET)

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It affects TheGreenBow VPN Client Windows Enterprise. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for TheGreenBow VPN Client Windows Enterprise

Exploited in the last 30 days

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.

CVSS: 8.2 HIGH (v4.0, CNA)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
Weakness (CWE): CWE-299
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: INCIBE
NVD analysis: Deferred
Record last updated: Oct 27, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

TheGreenBow TheGreenBow VPN Client Windows Enterprise thegreenbow:vpn_client_windows_enterprise (from the name)	7.5; 7.6	CNA record

References

References

https://www.incibe.es/en/incibe-cert/notices/aviso/incorrect-validation-ocsp-certificates-thegreenbow-vpn-client-windows
https://www.thegreenbow.com/en/support/security-alerts/	vendor-advisory, patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.