CVE-2025-32989mediumCWE-295

CVE-2025-32989: medium-severity vulnerability in libgnutls

Gnutls: vulnerability in gnutls sct extension parsing

Published · Updated

Follow this CVE+ Monitor Red Hat Enterprise Linux+ Monitor Red Hat OpenShift Container Platform

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

13Vexday Risk Score

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

ssvc Trackcvss 5.3epss 1.5%
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 7Red Hat · Red Hat Discovery 2Red Hat · Red Hat Enterprise Linux 10Red Hat · Red Hat Enterprise Linux 6Red Hat · Red Hat Enterprise Linux 7Red Hat · Red Hat Enterprise Linux 8Red Hat · Red Hat Enterprise Linux 9Red Hat · Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRed Hat · Red Hat Enterprise Linux 9.4 Extended Update SupportRed Hat · Red Hat Hardened ImagesRed Hat · Red Hat Insights proxy 1.5Red Hat · Red Hat OpenShift Container Platform 4
Related CVEs — libgnutls

In the same product, most dangerous first.

CVE-2024-6387HIGHOpenssh: regresshion - race condition in ssh allows rce/dosEPSS 99.5%CVE-2023-52356HIGHLibtiff: segment fault in libtiff in tiffreadrgbatileext() leading to denial of serviceEPSS 2.5%CVE-2026-33845HIGHGnutls: gnutls: denial of service via dtls zero-length fragmentEPSS 2.1%CVE-2023-52355HIGHLibtiff: tiffrasterscanlinesize64 produce too-big size and could cause oomEPSS 1.8%CVE-2024-12086MEDIUMRsync: rsync server leaks arbitrary client filesEPSS 1.8%CVE-2025-49796CRITICALLibxml: type confusion leads to denial of service (dos)EPSS 1.6%