# CVE-2025-32989: Gnutls: vulnerability in gnutls sct extension parsing

CVE-2025-32989 is fixed in 21 products on 1 platform, first by RHSA-2025:16115, released July 10, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2025-32989
- Priority: Routine
- CVSS: 6.5 (Moderate)
- EPSS: 0.0147
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 10, 2025
- Weakness: Improper Certificate Validation
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-32989

## Description

A heap-buffer-overread vulnerability was found in GnuTLS in how it handlesthe Certificate Transparency (CT) Signed Certificate Timestamp (SCT)extension during X.509 certificate parsing. This flaw allows a malicioususer to create a certificate containing a malformed SCT extension (OID1.3.6.1.4.1.11129.2.4.2) that contains sensitive data. This issue leads tothe exposure of confidential information when GnuTLS verifies certificatesfrom certain websites when the certificate (SCT) is not checked correctly.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | gnutls RHEL 10 | 3.8.9-9.el10_0.14 | [RHSA-2025:16115](https://patchblox.com/security/data/fix/linux/rhsa-2025-16115.md) | Jul 10, 2025 |
| Linux | gnutls RHEL 9 | 0:3.8.3-6.el9_6.2 | [RHSA-2025:16116](https://patchblox.com/security/data/fix/linux/rhsa-2025-16116.md) | Sep 17, 2025 |
| Linux | gnutls almalinux 10 | 3.8.9-9.el10_0.14 | [ALSA-2025:16115](https://patchblox.com/security/data/fix/linux/alsa-2025-16115.md) | Sep 17, 2025 |
| Linux | gnutls almalinux 9 | 3.8.3-6.el9_6.2 | [ALSA-2025:16116](https://patchblox.com/security/data/fix/linux/alsa-2025-16116.md) | Sep 17, 2025 |
| Linux | gnutls amzn 2023 | 3.8.3-8.amzn2023.0.1 | [ALAS2023-2025-1140](https://patchblox.com/security/data/fix/linux/alas2023-2025-1140.md) | Aug 5, 2025 |
| Linux | gnutls ol 10 | 0:3.8.9-9.el10_0.14 | [ELSA-2025-16115](https://patchblox.com/security/data/fix/linux/elsa-2025-16115.md) | Sep 19, 2025 |
| Linux | gnutls ol 9 | 10:3.8.3-6.el9_6.2_fips | [ELSA-2025-20606](https://patchblox.com/security/data/fix/linux/elsa-2025-20606.md) | Sep 19, 2025 |
| Linux | gnutls opensuse-leap 15.6 | 3.8.3-150600.4.9.1 | [SUSE-SU-2025:02595-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-02595-1.md) | Aug 1, 2025 |
| Linux | gnutls rocky 10 | 0:3.8.9-9.el10_0.14 | [RLSA-2025:16115](https://patchblox.com/security/data/fix/linux/rlsa-2025-16115.md) | Oct 3, 2025 |
| Linux | gnutls rocky 9 | 0:3.8.3-6.el9_6.2 | [RLSA-2025:16116](https://patchblox.com/security/data/fix/linux/rlsa-2025-16116.md) | Oct 10, 2025 |
| Linux | gnutls sles 15.6 | 3.8.3-150600.4.9.1 | [SUSE-SU-2025:02595-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-02595-1.md) | Aug 1, 2025 |
| Linux | gnutls sles 15.7 | 3.8.3-150600.4.9.1 | [SUSE-SU-2025:02595-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-02595-1.md) | Aug 1, 2025 |
| Linux | gnutls-bin Ubuntu 22.04.1 LTS (jammy) | 3.7.3-4ubuntu1.7 | [gnutls-bin 3.7.3-4ubuntu1.7](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-gnutls-bin-3.7.3-4ubuntu1.7.md) | Jul 10, 2025 |
| Linux | gnutls-bin Ubuntu 24.04.5 LTS (noble) | 3.8.3-1.1ubuntu3.4 | [gnutls-bin 3.8.3-1.1ubuntu3.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-gnutls-bin-3.8.3-1.1ubuntu3.4.md) | Jul 10, 2025 |
| Linux | gnutls-bin Ubuntu 25.04 (plucky) | 3.8.9-2ubuntu3.1 | [gnutls-bin 3.8.9-2ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-gnutls-bin-3.8.9-2ubuntu3.1.md) | Jan 16, 2026 |
| Linux | gnutls-bin Ubuntu 25.10 (questing) | 3.8.9-3ubuntu1 | [gnutls-bin 3.8.9-3ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-gnutls-bin-3.8.9-3ubuntu1.md) | Jul 10, 2025 |
| Linux | gnutls-c++ RHEL 9 | 0:3.8.3-6.el9_6.2 | [RHSA-2025:16116](https://patchblox.com/security/data/fix/linux/rhsa-2025-16116.md) | Sep 17, 2025 |
| Linux | gnutls-c++ almalinux 10 | 3.8.9-9.el10_0.14 | [ALSA-2025:16115](https://patchblox.com/security/data/fix/linux/alsa-2025-16115.md) | Sep 17, 2025 |
| Linux | gnutls-c++ almalinux 9 | 3.8.3-6.el9_6.2 | [ALSA-2025:16116](https://patchblox.com/security/data/fix/linux/alsa-2025-16116.md) | Sep 17, 2025 |
| Linux | gnutls-c++ amzn 2023 | 3.8.3-8.amzn2023.0.1 | [ALAS2023-2025-1140](https://patchblox.com/security/data/fix/linux/alas2023-2025-1140.md) | Aug 5, 2025 |
| Linux | gnutls-c++ ol 10 | 0:3.8.9-9.el10_0.14 | [ELSA-2025-16115](https://patchblox.com/security/data/fix/linux/elsa-2025-16115.md) | Sep 19, 2025 |
| Linux | gnutls-c++ ol 9 | 10:3.8.3-6.el9_6.2_fips | [ELSA-2025-20606](https://patchblox.com/security/data/fix/linux/elsa-2025-20606.md) | Sep 19, 2025 |
| Linux | gnutls-c++-debuginfo amzn 2023 | 3.8.3-8.amzn2023.0.1 | [ALAS2023-2025-1140](https://patchblox.com/security/data/fix/linux/alas2023-2025-1140.md) | Aug 5, 2025 |
| Linux | gnutls-dane RHEL 9 | 0:3.8.3-6.el9_6.2 | [RHSA-2025:16116](https://patchblox.com/security/data/fix/linux/rhsa-2025-16116.md) | Sep 17, 2025 |
| Linux | gnutls-dane almalinux 10 | 3.8.9-9.el10_0.14 | [ALSA-2025:16115](https://patchblox.com/security/data/fix/linux/alsa-2025-16115.md) | Sep 17, 2025 |
| Linux | gnutls-dane almalinux 9 | 3.8.3-6.el9_6.2 | [ALSA-2025:16116](https://patchblox.com/security/data/fix/linux/alsa-2025-16116.md) | Sep 17, 2025 |
| Linux | gnutls-dane amzn 2023 | 3.8.3-8.amzn2023.0.1 | [ALAS2023-2025-1140](https://patchblox.com/security/data/fix/linux/alas2023-2025-1140.md) | Aug 5, 2025 |
| Linux | gnutls-dane ol 10 | 0:3.8.9-9.el10_0.14 | [ELSA-2025-16115](https://patchblox.com/security/data/fix/linux/elsa-2025-16115.md) | Sep 19, 2025 |
| Linux | gnutls-dane ol 9 | 10:3.8.3-6.el9_6.2_fips | [ELSA-2025-20606](https://patchblox.com/security/data/fix/linux/elsa-2025-20606.md) | Sep 19, 2025 |
| Linux | gnutls-dane-debuginfo amzn 2023 | 3.8.3-8.amzn2023.0.1 | [ALAS2023-2025-1140](https://patchblox.com/security/data/fix/linux/alas2023-2025-1140.md) | Aug 5, 2025 |
| Linux | gnutls-debuginfo amzn 2023 | 3.8.3-8.amzn2023.0.1 | [ALAS2023-2025-1140](https://patchblox.com/security/data/fix/linux/alas2023-2025-1140.md) | Aug 5, 2025 |
| Linux | gnutls-debugsource amzn 2023 | 3.8.3-8.amzn2023.0.1 | [ALAS2023-2025-1140](https://patchblox.com/security/data/fix/linux/alas2023-2025-1140.md) | Aug 5, 2025 |
| Linux | gnutls-devel RHEL 9 | 0:3.8.3-6.el9_6.2 | [RHSA-2025:16116](https://patchblox.com/security/data/fix/linux/rhsa-2025-16116.md) | Sep 17, 2025 |
| Linux | gnutls-devel almalinux 10 | 3.8.9-9.el10_0.14 | [ALSA-2025:16115](https://patchblox.com/security/data/fix/linux/alsa-2025-16115.md) | Sep 17, 2025 |
| Linux | gnutls-devel almalinux 9 | 3.8.3-6.el9_6.2 | [ALSA-2025:16116](https://patchblox.com/security/data/fix/linux/alsa-2025-16116.md) | Sep 17, 2025 |
| Linux | gnutls-devel amzn 2023 | 3.8.3-8.amzn2023.0.1 | [ALAS2023-2025-1140](https://patchblox.com/security/data/fix/linux/alas2023-2025-1140.md) | Aug 5, 2025 |
| Linux | gnutls-devel ol 10 | 0:3.8.9-9.el10_0.14 | [ELSA-2025-16115](https://patchblox.com/security/data/fix/linux/elsa-2025-16115.md) | Sep 19, 2025 |
| Linux | gnutls-devel ol 9 | 10:3.8.3-6.el9_6.2_fips | [ELSA-2025-20606](https://patchblox.com/security/data/fix/linux/elsa-2025-20606.md) | Sep 19, 2025 |
| Linux | gnutls-fips almalinux 10 | 3.8.9-9.el10_0.14 | [ALSA-2025:16115](https://patchblox.com/security/data/fix/linux/alsa-2025-16115.md) | Sep 17, 2025 |
| Linux | gnutls-fips ol 10 | 0:3.8.9-9.el10_0.14 | [ELSA-2025-16115](https://patchblox.com/security/data/fix/linux/elsa-2025-16115.md) | Sep 19, 2025 |
| Linux | gnutls-utils RHEL 9 | 0:3.8.3-6.el9_6.2 | [RHSA-2025:16116](https://patchblox.com/security/data/fix/linux/rhsa-2025-16116.md) | Sep 17, 2025 |
| Linux | gnutls-utils almalinux 10 | 3.8.9-9.el10_0.14 | [ALSA-2025:16115](https://patchblox.com/security/data/fix/linux/alsa-2025-16115.md) | Sep 17, 2025 |
| Linux | gnutls-utils almalinux 9 | 3.8.3-6.el9_6.2 | [ALSA-2025:16116](https://patchblox.com/security/data/fix/linux/alsa-2025-16116.md) | Sep 17, 2025 |
| Linux | gnutls-utils amzn 2023 | 3.8.3-8.amzn2023.0.1 | [ALAS2023-2025-1140](https://patchblox.com/security/data/fix/linux/alas2023-2025-1140.md) | Aug 5, 2025 |
| Linux | gnutls-utils ol 10 | 0:3.8.9-9.el10_0.14 | [ELSA-2025-16115](https://patchblox.com/security/data/fix/linux/elsa-2025-16115.md) | Sep 19, 2025 |
| Linux | gnutls-utils ol 9 | 10:3.8.3-6.el9_6.2_fips | [ELSA-2025-20606](https://patchblox.com/security/data/fix/linux/elsa-2025-20606.md) | Sep 19, 2025 |
| Linux | gnutls-utils-debuginfo amzn 2023 | 3.8.3-8.amzn2023.0.1 | [ALAS2023-2025-1140](https://patchblox.com/security/data/fix/linux/alas2023-2025-1140.md) | Aug 5, 2025 |
| Linux | gnutls28 Debian 12.15 (bookworm) | 3.7.9-2+deb12u5 | [DEBIAN-CVE-2025-32989](https://patchblox.com/security/data/fix/linux/debian-cve-2025-32989.md) | Jul 10, 2025 |
| Linux | gnutls28 Debian 13.5 (trixie) | 3.8.9-3 | [DEBIAN-CVE-2025-32989](https://patchblox.com/security/data/fix/linux/debian-cve-2025-32989.md) | Jul 10, 2025 |
| Linux | gnutls28 Debian 14 | 3.8.9-3 | [DEBIAN-CVE-2025-32989](https://patchblox.com/security/data/fix/linux/debian-cve-2025-32989.md) | Jul 10, 2025 |
| Linux | guile-gnutls Ubuntu 22.04.1 LTS (jammy) | 3.7.3-4ubuntu1.7 | [guile-gnutls 3.7.3-4ubuntu1.7](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-guile-gnutls-3.7.3-4ubuntu1.7.md) | Jul 10, 2025 |
| Linux | libgnutls-dane0 Ubuntu 22.04.1 LTS (jammy) | 3.7.3-4ubuntu1.7 | [libgnutls-dane0 3.7.3-4ubuntu1.7](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libgnutls-dane0-3.7.3-4ubuntu1.7.md) | Jul 10, 2025 |
| Linux | libgnutls-dane0t64 Ubuntu 24.04.5 LTS (noble) | 3.8.3-1.1ubuntu3.4 | [libgnutls-dane0t64 3.8.3-1.1ubuntu3.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libgnutls-dane0t64-3.8.3-1.1ubuntu3.4.md) | Jul 10, 2025 |
| Linux | libgnutls-dane0t64 Ubuntu 25.04 (plucky) | 3.8.9-2ubuntu3.1 | [libgnutls-dane0t64 3.8.9-2ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libgnutls-dane0t64-3.8.9-2ubuntu3.1.md) | Jan 16, 2026 |
| Linux | libgnutls-dane0t64 Ubuntu 25.10 (questing) | 3.8.9-3ubuntu1 | [libgnutls-dane0t64 3.8.9-3ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libgnutls-dane0t64-3.8.9-3ubuntu1.md) | Jul 10, 2025 |
| Linux | libgnutls-openssl27 Ubuntu 22.04.1 LTS (jammy) | 3.7.3-4ubuntu1.7 | [libgnutls-openssl27 3.7.3-4ubuntu1.7](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libgnutls-openssl27-3.7.3-4ubuntu1.7.md) | Jul 10, 2025 |
| Linux | libgnutls-openssl27t64 Ubuntu 24.04.5 LTS (noble) | 3.8.3-1.1ubuntu3.4 | [libgnutls-openssl27t64 3.8.3-1.1ubuntu3.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libgnutls-openssl27t64-3.8.3-1.1ubuntu3.4.md) | Jul 10, 2025 |
| Linux | libgnutls-openssl27t64 Ubuntu 25.04 (plucky) | 3.8.9-2ubuntu3.1 | [libgnutls-openssl27t64 3.8.9-2ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libgnutls-openssl27t64-3.8.9-2ubuntu3.1.md) | Jan 16, 2026 |
| Linux | libgnutls-openssl27t64 Ubuntu 25.10 (questing) | 3.8.9-3ubuntu1 | [libgnutls-openssl27t64 3.8.9-3ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libgnutls-openssl27t64-3.8.9-3ubuntu1.md) | Jul 10, 2025 |
| Linux | libgnutls30 Ubuntu 22.04.1 LTS (jammy) | 3.7.3-4ubuntu1.7 | [libgnutls30 3.7.3-4ubuntu1.7](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libgnutls30-3.7.3-4ubuntu1.7.md) | Jul 10, 2025 |
| Linux | libgnutls30t64 Ubuntu 24.04.5 LTS (noble) | 3.8.3-1.1ubuntu3.4 | [libgnutls30t64 3.8.3-1.1ubuntu3.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libgnutls30t64-3.8.3-1.1ubuntu3.4.md) | Jul 10, 2025 |
| Linux | libgnutls30t64 Ubuntu 25.04 (plucky) | 3.8.9-2ubuntu3.1 | [libgnutls30t64 3.8.9-2ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libgnutls30t64-3.8.9-2ubuntu3.1.md) | Jan 16, 2026 |
| Linux | libgnutls30t64 Ubuntu 25.10 (questing) | 3.8.9-3ubuntu1 | [libgnutls30t64 3.8.9-3ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libgnutls30t64-3.8.9-3ubuntu1.md) | Jul 10, 2025 |
| Linux | libgnutlsxx28 Ubuntu 22.04.1 LTS (jammy) | 3.7.3-4ubuntu1.7 | [libgnutlsxx28 3.7.3-4ubuntu1.7](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libgnutlsxx28-3.7.3-4ubuntu1.7.md) | Jul 10, 2025 |

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