U.S. flag   An official website of the United States government
Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock (Dot gov) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

CVE-2025-11955 Detail

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  Spanish National Cybersecurity Institute, S.A. (INCIBE)
CVSS-B 8.2 HIGH
Vector:  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

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to [email protected].

URL Source(s) Tag(s)
https://www.incibe.es/en/incibe-cert/notices/aviso/incorrect-validation-ocsp-certificates-thegreenbow-vpn-client-windows Spanish National Cybersecurity Institute, S.A. (INCIBE)
https://www.thegreenbow.com/en/support/security-alerts/ Spanish National Cybersecurity Institute, S.A. (INCIBE)

Weakness Enumeration

CWE-ID CWE Name Source
CWE-299 Improper Check for Certificate Revocation Spanish National Cybersecurity Institute, S.A. (INCIBE)  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-11955
NVD Published Date:
10/27/2025
NVD Last Modified:
10/27/2025
Source:
Spanish National Cybersecurity Institute, S.A. (INCIBE)