CVE-2025-32989
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-07-10

Last updated on: 2026-04-20

Assigner: Red Hat, Inc.

Description
A heap-buffer-overread vulnerability was found in GnuTLS in how it handles the Certificate Transparency (CT) Signed Certificate Timestamp (SCT) extension during X.509 certificate parsing. This flaw allows a malicious user to create a certificate containing a malformed SCT extension (OID 1.3.6.1.4.1.11129.2.4.2) that contains sensitive data. This issue leads to the exposure of confidential information when GnuTLS verifies certificates from certain websites when the certificate (SCT) is not checked correctly.
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2025-07-10
Last Modified
2026-04-20
Generated
2026-05-07
AI Q&A
2025-07-10
EPSS Evaluated
2026-05-05
NVD
Affected Vendors & Products
Showing 7 associated CPEs
Vendor Product Version / Range
redhat enterprise_linux 8.0
gnu gnutls *
redhat openshift_container_platform 4.0
redhat enterprise_linux 6.0
redhat enterprise_linux 7.0
redhat enterprise_linux 9.0
redhat enterprise_linux 10.0
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-295 The product does not validate, or incorrectly validates, a certificate.
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?

This vulnerability is a heap-buffer-overread in GnuTLS that occurs when handling the Certificate Transparency (CT) Signed Certificate Timestamp (SCT) extension during X.509 certificate parsing. A malicious user can craft a certificate with a malformed SCT extension that causes GnuTLS to expose sensitive data during certificate verification.


How can this vulnerability impact me? :

The vulnerability can lead to the exposure of confidential information when GnuTLS verifies certificates from certain websites. This means that sensitive data could be leaked to an attacker if a malformed SCT extension is encountered.


Ask Our AI Assistant
Need more information? Ask your question to get an AI reply (Powered by our expertise)
0/70
EPSS Chart