CVE-2025-9820
gnutls: The gnutls packages provide the GNU Transport Layer Security (GnuTLS) library, which implements cryptographic algorit...
CVE-2025-9820 is fixed in 16 products on 1 platform, first by RHSA-2026:3477, released November 18, 2025. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
5.3
Moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0022
12th percentile
The gnutls packages provide the GNU Transport Layer Security (GnuTLS) library, which implements cryptographic algorithms and protocols such as SSL, TLS, and DTLS. Security Fix(es): * gnutls: Stack-based Buffer Overflow in gnutls_pkcs11_token_init() Function (CVE-2025-9820) * gnutls: GnuTLS: Denial of Service via excessive resource consumption during certificate verification (CVE-2025-14831) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| gnutls · RHEL 10 | 3.8.10-3.el10_1 | RHSA-2026:3477 | Nov 18, 2025 |
| gnutls · RHEL 8 | 0:3.6.16-8.el8_10.5 | RHSA-2026:5585 | Apr 15, 2026 |
| gnutls · RHEL 9 | 0:3.8.3-10.el9_7 | RHSA-2026:4188 | Mar 12, 2026 |
| gnutls · almalinux 10 | 3.8.10-3.el10_1 | ALSA-2026:3477 | Mar 2, 2026 |
| gnutls · almalinux 8 | 3.6.16-8.el8_10.5 | ALSA-2026:5585 | Mar 24, 2026 |
| gnutls · almalinux 9 | 3.8.3-10.el9_7 | ALSA-2026:4188 | Mar 10, 2026 |
| gnutls · ol 10 | 0:3.8.10-3.el10_1 | ELSA-2026-3477 | Mar 2, 2026 |
| gnutls · ol 8 | 0:3.6.16-8.el8_10.5 | ELSA-2026-5585 | Mar 24, 2026 |
| gnutls · ol 9 | 0:3.8.3-10.el9_7 | ELSA-2026-4188 | Mar 11, 2026 |
| gnutls · opensuse-leap 15.6 | 3.8.3-150600.4.12.1 | SUSE-SU-2025:4323-1 | Dec 8, 2025 |
| gnutls · opensuse-leap 16.0 | 3.8.10-160000.2.1 | OPENSUSE-SU-2026:20446-1 | Mar 30, 2026 |
| gnutls · rocky 10 | 0:3.8.10-3.el10_1 | RLSA-2026:3477 | Mar 5, 2026 |
| gnutls · rocky 8 | 0:3.6.16-8.el8_10.5 | RLSA-2026:5585 | Apr 7, 2026 |
| gnutls · rocky 9 | 0:3.8.3-10.el9_7 | RLSA-2026:4188 | Mar 11, 2026 |
| gnutls · sles 15.6 | 3.8.3-150600.4.12.1 | SUSE-SU-2025:4323-1 | Dec 8, 2025 |
| gnutls · sles 15.7 | 3.8.3-150600.4.12.1 | SUSE-SU-2025:4323-1 | Dec 8, 2025 |
| gnutls · sles 16.0 | 3.8.10-160000.2.1 | SUSE-SU-2026:20984-1 | Mar 30, 2026 |
| gnutls-bin · Ubuntu 18.04.6 LTS (bionic) | 3.5.18-1ubuntu1.6+esm3 | gnutls-bin 3.5.18-1ubuntu1.6+esm3 | May 4, 2026 |
| gnutls-bin · Ubuntu 20.04 LTS (focal) | 3.6.13-2ubuntu1.12+esm2 | gnutls-bin 3.6.13-2ubuntu1.12+esm2 | May 7, 2026 |
| gnutls-bin · Ubuntu 22.04.1 LTS (jammy) | 3.7.3-4ubuntu1.8 | gnutls-bin 3.7.3-4ubuntu1.8 | Feb 9, 2026 |
| gnutls-bin · Ubuntu 24.04.5 LTS (noble) | 3.8.3-1.1ubuntu3.5 | gnutls-bin 3.8.3-1.1ubuntu3.5 | Feb 9, 2026 |
| gnutls-bin · Ubuntu 25.10 (questing) | 3.8.9-3ubuntu2.1 | gnutls-bin 3.8.9-3ubuntu2.1 | Feb 9, 2026 |
| gnutls-c++ · RHEL 8 | 0:3.6.16-8.el8_10.5 | RHSA-2026:5585 | Apr 15, 2026 |
| gnutls-c++ · RHEL 9 | 0:3.8.3-10.el9_7 | RHSA-2026:4188 | Mar 12, 2026 |
| gnutls-c++ · almalinux 10 | 3.8.10-3.el10_1 | ALSA-2026:3477 | Mar 2, 2026 |
| gnutls-c++ · almalinux 8 | 3.6.16-8.el8_10.5 | ALSA-2026:5585 | Mar 24, 2026 |
| gnutls-c++ · almalinux 9 | 3.8.3-10.el9_7 | ALSA-2026:4188 | Mar 10, 2026 |
| gnutls-c++ · ol 10 | 0:3.8.10-3.el10_1 | ELSA-2026-3477 | Mar 2, 2026 |
| gnutls-c++ · ol 8 | 0:3.6.16-8.el8_10.5 | ELSA-2026-5585 | Mar 24, 2026 |
| gnutls-c++ · ol 9 | 0:3.8.3-10.el9_7 | ELSA-2026-4188 | Mar 11, 2026 |
| gnutls-dane · RHEL 8 | 0:3.6.16-8.el8_10.5 | RHSA-2026:5585 | Apr 15, 2026 |
| gnutls-dane · RHEL 9 | 0:3.8.3-10.el9_7 | RHSA-2026:4188 | Mar 12, 2026 |
| gnutls-dane · almalinux 10 | 3.8.10-3.el10_1 | ALSA-2026:3477 | Mar 2, 2026 |
| gnutls-dane · almalinux 8 | 3.6.16-8.el8_10.5 | ALSA-2026:5585 | Mar 24, 2026 |
| gnutls-dane · almalinux 9 | 3.8.3-10.el9_7 | ALSA-2026:4188 | Mar 10, 2026 |
| gnutls-dane · ol 10 | 0:3.8.10-3.el10_1 | ELSA-2026-3477 | Mar 2, 2026 |
| gnutls-dane · ol 8 | 0:3.6.16-8.el8_10.5 | ELSA-2026-5585 | Mar 24, 2026 |
| gnutls-dane · ol 9 | 0:3.8.3-10.el9_7 | ELSA-2026-4188 | Mar 11, 2026 |
| gnutls-devel · RHEL 8 | 0:3.6.16-8.el8_10.5 | RHSA-2026:5585 | Apr 15, 2026 |
| gnutls-devel · RHEL 9 | 0:3.8.3-10.el9_7 | RHSA-2026:4188 | Mar 12, 2026 |
| gnutls-devel · almalinux 10 | 3.8.10-3.el10_1 | ALSA-2026:3477 | Mar 2, 2026 |
| gnutls-devel · almalinux 8 | 3.6.16-8.el8_10.5 | ALSA-2026:5585 | Mar 24, 2026 |
| gnutls-devel · almalinux 9 | 3.8.3-10.el9_7 | ALSA-2026:4188 | Mar 10, 2026 |
| gnutls-devel · ol 10 | 0:3.8.10-3.el10_1 | ELSA-2026-3477 | Mar 2, 2026 |
| gnutls-devel · ol 8 | 0:3.6.16-8.el8_10.5 | ELSA-2026-5585 | Mar 24, 2026 |
| gnutls-devel · ol 9 | 0:3.8.3-10.el9_7 | ELSA-2026-4188 | Mar 11, 2026 |
| gnutls-fips · almalinux 10 | 3.8.10-3.el10_1 | ALSA-2026:3477 | Mar 2, 2026 |
| gnutls-fips · ol 10 | 0:3.8.10-3.el10_1 | ELSA-2026-3477 | Mar 2, 2026 |
| gnutls-utils · RHEL 8 | 0:3.6.16-8.el8_10.5 | RHSA-2026:5585 | Apr 15, 2026 |
| gnutls-utils · RHEL 9 | 0:3.8.3-10.el9_7 | RHSA-2026:4188 | Mar 12, 2026 |
| gnutls-utils · almalinux 10 | 3.8.10-3.el10_1 | ALSA-2026:3477 | Mar 2, 2026 |
| gnutls-utils · almalinux 8 | 3.6.16-8.el8_10.5 | ALSA-2026:5585 | Mar 24, 2026 |
| gnutls-utils · almalinux 9 | 3.8.3-10.el9_7 | ALSA-2026:4188 | Mar 10, 2026 |
| gnutls-utils · ol 10 | 0:3.8.10-3.el10_1 | ELSA-2026-3477 | Mar 2, 2026 |
| gnutls-utils · ol 8 | 0:3.6.16-8.el8_10.5 | ELSA-2026-5585 | Mar 24, 2026 |
| gnutls-utils · ol 9 | 0:3.8.3-10.el9_7 | ELSA-2026-4188 | Mar 11, 2026 |
| gnutls28 · Debian 12.15 (bookworm) | 3.7.9-2+deb12u6 | DEBIAN-CVE-2025-9820 | Jan 26, 2026 |
| gnutls28 · Debian 13.5 (trixie) | 3.8.9-3+deb13u1 | DEBIAN-CVE-2025-9820 | Jan 26, 2026 |
| gnutls28 · Debian 14 | 3.8.11-3 | DEBIAN-CVE-2025-9820 | Jan 26, 2026 |
| guile-gnutls · Ubuntu 20.04 LTS (focal) | 3.6.13-2ubuntu1.12+esm2 | guile-gnutls 3.6.13-2ubuntu1.12+esm2 | May 7, 2026 |
| guile-gnutls · Ubuntu 22.04.1 LTS (jammy) | 3.7.3-4ubuntu1.8 | guile-gnutls 3.7.3-4ubuntu1.8 | Feb 9, 2026 |
| libgnutls-dane0 · Ubuntu 18.04.6 LTS (bionic) | 3.5.18-1ubuntu1.6+esm3 | libgnutls-dane0 3.5.18-1ubuntu1.6+esm3 | May 4, 2026 |
| libgnutls-dane0 · Ubuntu 20.04 LTS (focal) | 3.6.13-2ubuntu1.12+esm2 | libgnutls-dane0 3.6.13-2ubuntu1.12+esm2 | May 7, 2026 |
| libgnutls-dane0 · Ubuntu 22.04.1 LTS (jammy) | 3.7.3-4ubuntu1.8 | libgnutls-dane0 3.7.3-4ubuntu1.8 | Feb 9, 2026 |
| libgnutls-dane0t64 · Ubuntu 24.04.5 LTS (noble) | 3.8.3-1.1ubuntu3.5 | libgnutls-dane0t64 3.8.3-1.1ubuntu3.5 | Feb 9, 2026 |
| libgnutls-dane0t64 · Ubuntu 25.10 (questing) | 3.8.9-3ubuntu2.1 | libgnutls-dane0t64 3.8.9-3ubuntu2.1 | Feb 9, 2026 |
| libgnutls-openssl27 · Ubuntu 18.04.6 LTS (bionic) | 3.5.18-1ubuntu1.6+esm3 | libgnutls-openssl27 3.5.18-1ubuntu1.6+esm3 | May 4, 2026 |
| libgnutls-openssl27 · Ubuntu 20.04 LTS (focal) | 3.6.13-2ubuntu1.12+esm2 | libgnutls-openssl27 3.6.13-2ubuntu1.12+esm2 | May 7, 2026 |
| libgnutls-openssl27 · Ubuntu 22.04.1 LTS (jammy) | 3.7.3-4ubuntu1.8 | libgnutls-openssl27 3.7.3-4ubuntu1.8 | Feb 9, 2026 |
| libgnutls-openssl27t64 · Ubuntu 24.04.5 LTS (noble) | 3.8.3-1.1ubuntu3.5 | libgnutls-openssl27t64 3.8.3-1.1ubuntu3.5 | Feb 9, 2026 |
| libgnutls-openssl27t64 · Ubuntu 25.10 (questing) | 3.8.9-3ubuntu2.1 | libgnutls-openssl27t64 3.8.9-3ubuntu2.1 | Feb 9, 2026 |
| libgnutls30 · Ubuntu 18.04.6 LTS (bionic) | 3.5.18-1ubuntu1.6+esm3 | libgnutls30 3.5.18-1ubuntu1.6+esm3 | May 4, 2026 |
| libgnutls30 · Ubuntu 20.04 LTS (focal) | 3.6.13-2ubuntu1.12+esm2 | libgnutls30 3.6.13-2ubuntu1.12+esm2 | May 7, 2026 |
| libgnutls30 · Ubuntu 22.04.1 LTS (jammy) | 3.7.3-4ubuntu1.8 | libgnutls30 3.7.3-4ubuntu1.8 | Feb 9, 2026 |
| libgnutls30t64 · Ubuntu 24.04.5 LTS (noble) | 3.8.3-1.1ubuntu3.5 | libgnutls30t64 3.8.3-1.1ubuntu3.5 | Feb 9, 2026 |
| libgnutls30t64 · Ubuntu 25.10 (questing) | 3.8.9-3ubuntu2.1 | libgnutls30t64 3.8.9-3ubuntu2.1 | Feb 9, 2026 |
| libgnutlsxx28 · Ubuntu 18.04.6 LTS (bionic) | 3.5.18-1ubuntu1.6+esm3 | libgnutlsxx28 3.5.18-1ubuntu1.6+esm3 | May 4, 2026 |
| libgnutlsxx28 · Ubuntu 20.04 LTS (focal) | 3.6.13-2ubuntu1.12+esm2 | libgnutlsxx28 3.6.13-2ubuntu1.12+esm2 | May 7, 2026 |
| libgnutlsxx28 · Ubuntu 22.04.1 LTS (jammy) | 3.7.3-4ubuntu1.8 | libgnutlsxx28 3.7.3-4ubuntu1.8 | Feb 9, 2026 |
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