CVE-2025-32989Gnutls: vulnerability in gnutls sct extension parsing
Updated under an hour ago ()
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It affects Red Hat Enterprise Linux 10 and 10 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Weakness (CWE)
- CWE-295
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- redhat
- NVD analysis
- Not yet received
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 15, 2026
Affected products
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux | from 0:3.8.9-9.el10_0.14 not affected | CNA record |
from 0:3.7.6-21.el9_2.4 not affected | CNA record | |
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support redhat:rhel_eus | from 0:3.8.3-4.el9_4.4 not affected | CNA record |
Red Hat Red Hat Ceph Storage 7 redhat:ceph_storage | from 7 not affected | CNA record |
Red Hat Red Hat Discovery 2 redhat:discovery | from 2.3.0-1760554384 not affected | CNA record |
Red Hat Red Hat Hardened Images redhat:hummingbird | from 3.8.12-1.1.hum1 not affected | CNA record |
Red Hat Red Hat Insights proxy 1.5 redhat:insights_proxy | from 1.5.7-1759331989 not affected | CNA record |
Red Hat Red Hat OpenShift Container Platform 4 redhat:openshift | 4 | CNA record |
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.5 | CISA ADP |
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name) | from V3.1.5 | CISA ADP |
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.5 | CISA ADP |
References
- https://access.redhat.com/errata/RHSA-2025:16115vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2025:16116vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2025:17181vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2025:17348vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2025:17361vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2025:19088vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2025:22529vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:7477vendor-advisory, x-refsource-redhat
- https://access.redhat.com/security/cve/CVE-2025-32989vdb-entry, x-refsource-redhat
- https://bugzilla.redhat.com/show_bug.cgi?id=2359621issue-tracking, x-refsource-redhat
- https://lists.gnupg.org/pipermail/gnutls-help/2025-July/004883.html
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.