CVE-2025-32989mediumCWE-295

Gnutls: vulnerability in gnutls sct extension parsing

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 5.3epss 1.3%

exploitation probability

1.3%top 31% of all CVEs

observed exploitation

nono source reports it

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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected products

libgnutlsRed Hat · Red Hat Ceph Storage 7 Red Hat · Red Hat Discovery 2 Red Hat · Red Hat Enterprise Linux 10 Red Hat · Red Hat Enterprise Linux 6 Red Hat · Red Hat Enterprise Linux 7 Red Hat · Red Hat Enterprise Linux 8 Red Hat · Red Hat Enterprise Linux 9 Red Hat · Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Red Hat · Red Hat Enterprise Linux 9.4 Extended Update Support Red Hat · Red Hat Hardened Images Red Hat · Red Hat Insights proxy 1.5 Red Hat · Red Hat OpenShift Container Platform 4

References