CVE catalog
CVE-2025-9820
GnuTLS vulnerabilities
- Severity
- Medium · CVSS 4
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.22% · Oct 25, 2026
A flaw was found in the GnuTLS library, specifically in the gnutls_pkcs11_token_init() function that handles PKCS#11 token initialization. When a token label longer than expected is processed, the function writes past the end of a fixed-size stack buffer. This programming error can cause the application using GnuTLS to crash or, in certain conditions, be exploited for code execution. As a result, systems or applications relying on GnuTLS may be vulnerable to a denial of service or local privilege escalation attacks.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | gnutls28 | sid | 3.8.13-1 | fixed |
| Debian | gnutls28 | forky | 3.8.13-1 | fixed |
| Debian | gnutls28 | trixie | 3.8.9-3+deb13u4 | fixed |
| Debian | gnutls28 | trixie-security | 3.8.9-3+deb13u4 | fixed |
| Debian | gnutls28 | bookworm | 3.7.9-2+deb12u7 | fixed |
| Debian | gnutls28 | bookworm-security | 3.7.9-2+deb12u7 | fixed |
| Ubuntu | gnutls28 | noble | 3.8.3-1.1ubuntu3.5 | fixed |
| Ubuntu | gnutls-bin | noble | 3.8.3-1.1ubuntu3.5 | fixed |
| Ubuntu | gnutls-doc | noble | 3.8.3-1.1ubuntu3.5 | fixed |
| Ubuntu | libgnutls-dane0t64 | noble | 3.8.3-1.1ubuntu3.5 | fixed |
| Ubuntu | libgnutls-openssl27t64 | noble | 3.8.3-1.1ubuntu3.5 | fixed |
| Ubuntu | libgnutls28-dev | noble | 3.8.3-1.1ubuntu3.5 | fixed |
| Ubuntu | libgnutls30t64 | noble | 3.8.3-1.1ubuntu3.5 | fixed |
| Alpine | gnutls | 3.20 | 3.8.12-r0 | fixed |
| Alpine | gnutls | 3.21 | 3.8.12-r0 | fixed |
| Alpine | gnutls | 3.22 | 3.8.12-r0 | fixed |
| Alpine | gnutls | 3.23 | 3.8.11-r0 | fixed |
| Alpine | gnutls | 3.24 | 3.8.11-r0 | fixed |
| Ubuntu | gnutls28 | pro | 3.8.3-1.1ubuntu3.1+Fips1 | vulnerable |
| Ubuntu | gnutls28 | pro | 3.8.3-1.1ubuntu3.4+Fips1 | vulnerable |
| Ubuntu | gnutls28 | pro | 3.8.3-1.1ubuntu3.4+Fips1.1 | vulnerable |
| Ubuntu | gnutls28 | pro | 3.8.3-1.1ubuntu3.5+Fips1.1 | fixed |
| Ubuntu | gnutls28 | 22.04 | 3.7.1-5ubuntu1 | vulnerable |
| Ubuntu | gnutls28 | 22.04 | 3.7.2-2ubuntu1 | vulnerable |
| Ubuntu | gnutls28 | 22.04 | 3.7.2-4ubuntu1 | vulnerable |
| Ubuntu | gnutls28 | 22.04 | 3.7.2-5ubuntu1 | vulnerable |
| Ubuntu | gnutls28 | 22.04 | 3.7.3-4ubuntu1 | vulnerable |
| Ubuntu | gnutls28 | 22.04 | 3.7.3-4ubuntu1.1 | vulnerable |
| Ubuntu | gnutls28 | 22.04 | 3.7.3-4ubuntu1.2 | vulnerable |
| Ubuntu | gnutls28 | 22.04 | 3.7.3-4ubuntu1.3 | vulnerable |
| Ubuntu | gnutls28 | 22.04 | 3.7.3-4ubuntu1.4 | vulnerable |
| Ubuntu | gnutls28 | 22.04 | 3.7.3-4ubuntu1.5 | vulnerable |
| Ubuntu | gnutls28 | 22.04 | 3.7.3-4ubuntu1.6 | vulnerable |
| Ubuntu | gnutls28 | 22.04 | 3.7.3-4ubuntu1.7 | vulnerable |
| Ubuntu | gnutls28 | 22.04 | 3.7.3-4ubuntu1.8 | fixed |
| Ubuntu | gnutls28 | 24.04 | 3.8.1-4ubuntu1 | vulnerable |
| Ubuntu | gnutls28 | 24.04 | 3.8.1-4ubuntu6 | vulnerable |
| Ubuntu | gnutls28 | 24.04 | 3.8.1-4ubuntu7 | vulnerable |
| Ubuntu | gnutls28 | 24.04 | 3.8.3-1ubuntu1 | vulnerable |
| Ubuntu | gnutls28 | 24.04 | 3.8.3-1.1ubuntu2 | vulnerable |
| Ubuntu | gnutls28 | 24.04 | 3.8.3-1.1ubuntu3 | vulnerable |
| Ubuntu | gnutls28 | 24.04 | 3.8.3-1.1ubuntu3.1 | vulnerable |
| Ubuntu | gnutls28 | 24.04 | 3.8.3-1.1ubuntu3.2 | vulnerable |
| Ubuntu | gnutls28 | 24.04 | 3.8.3-1.1ubuntu3.3 | vulnerable |
| Ubuntu | gnutls28 | 24.04 | 3.8.3-1.1ubuntu3.4 | vulnerable |
| Ubuntu | gnutls28 | 24.04 | 3.8.3-1.1ubuntu3.5 | fixed |
| Ubuntu | gnutls28 | 25.10 | 3.8.9-2ubuntu3 | vulnerable |
| Ubuntu | gnutls28 | 25.10 | 3.8.9-3ubuntu1 | vulnerable |
| Ubuntu | gnutls28 | 25.10 | 3.8.9-3ubuntu2 | vulnerable |
| Ubuntu | gnutls28 | 25.10 | 3.8.9-3ubuntu2.1 | fixed |
| Suse | gnutls | linux enterprise server 12 sp5-ltss | 3.3.27-3.18.1 | fixed |
| Suse | gnutls | linux enterprise server ltss extended security 12 sp5 | 3.3.27-3.18.1 | fixed |
| Opensuse | gnutls | tumbleweed | 3.8.11-1.1 | fixed |
| Suse | gnutls | linux enterprise micro 5.4 | 3.7.3-150400.4.53.1 | fixed |
| Suse | gnutls | linux enterprise micro 5.5 | 3.7.3-150400.4.53.1 | fixed |
| Suse | gnutls | linux micro 6.1 | 3.8.3-slfo.1.1_5.1 | fixed |
| Suse | gnutls | linux micro 6.0 | 3.8.3-5.1 | fixed |
| Suse | gnutls | linux enterprise server ltss extended security 12 sp5 | 3.3.27-3.15.1 | fixed |
| Suse | gnutls | linux enterprise micro 5.2 | 3.6.7-150200.14.40.1 | fixed |
| Suse | gnutls | linux enterprise micro 5.3 | 3.7.3-150400.19.1 | fixed |
| Suse | gnutls | linux enterprise module for basesystem 15 sp6 | 3.8.3-150600.4.12.1 | fixed |
| Suse | gnutls | linux enterprise module for basesystem 15 sp7 | 3.8.3-150600.4.12.1 | fixed |
| Opensuse | gnutls | leap 15.6 | 3.8.3-150600.4.12.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | gnutls28 | source | sid | 3.8.11-3 | not yet assigned | Not reported | [1121146] |
| Debian | gnutls28 | source | forky | 3.8.11-3 | not yet assigned | Not reported | [1121146] |
| Debian | gnutls28 | source | trixie | 3.8.9-3+deb13u1 | not yet assigned | Not reported | [1121146] |
| Debian | gnutls28 | source | bookworm | 3.7.9-2+deb12u6 | not yet assigned | Not reported | [1121146] |
| Ubuntu | gnutls28 | deb | noble | 3.8.3-1.1ubuntu3.5 | Not reported | Not reported | Not reported |
| Ubuntu | gnutls-bin | deb | noble | 3.8.3-1.1ubuntu3.5 | Not reported | Not reported | Not reported |
| Ubuntu | gnutls-doc | deb | noble | 3.8.3-1.1ubuntu3.5 | Not reported | Not reported | Not reported |
| Ubuntu | libgnutls-dane0t64 | deb | noble | 3.8.3-1.1ubuntu3.5 | Not reported | Not reported | Not reported |
| Ubuntu | libgnutls-openssl27t64 | deb | noble | 3.8.3-1.1ubuntu3.5 | Not reported | Not reported | Not reported |
| Ubuntu | libgnutls28-dev | deb | noble | 3.8.3-1.1ubuntu3.5 | Not reported | Not reported | Not reported |
| Ubuntu | libgnutls30t64 | deb | noble | 3.8.3-1.1ubuntu3.5 | Not reported | Not reported | Not reported |
| Alpine | gnutls | apk | 3.20 | 3.8.12-r0 | Not reported | ALPINE-CVE-2025-9820 | Not reported |
| Alpine | gnutls | apk | 3.21 | 3.8.12-r0 | Not reported | ALPINE-CVE-2025-9820 | Not reported |
| Alpine | gnutls | apk | 3.22 | 3.8.12-r0 | Not reported | ALPINE-CVE-2025-9820 | Not reported |
| Alpine | gnutls | apk | 3.23 | 3.8.11-r0 | Not reported | ALPINE-CVE-2025-9820 | Not reported |
| Alpine | gnutls | apk | 3.24 | 3.8.11-r0 | Not reported | ALPINE-CVE-2025-9820 | Not reported |
| Ubuntu | gnutls28 | deb | pro | 3.8.3-1.1ubuntu3.5+Fips1.1 | Not reported | UBUNTU-CVE-2025-9820 | Not reported |
| Ubuntu | gnutls28 | deb | 22.04 | 3.7.3-4ubuntu1.8 | Not reported | UBUNTU-CVE-2025-9820 | Not reported |
| Ubuntu | gnutls28 | deb | 24.04 | 3.8.3-1.1ubuntu3.5 | Not reported | UBUNTU-CVE-2025-9820 | Not reported |
| Ubuntu | gnutls28 | deb | 25.10 | 3.8.9-3ubuntu2.1 | Not reported | UBUNTU-CVE-2025-9820 | Not reported |
| Suse | gnutls | rpm | linux enterprise server 12 sp5-ltss | 3.3.27-3.18.1 | Not reported | SUSE-SU-2026:2367-1 | Not reported |
| Suse | gnutls | rpm | linux enterprise server ltss extended security 12 sp5 | 3.3.27-3.18.1 | Not reported | SUSE-SU-2026:2367-1 | Not reported |
| Opensuse | gnutls | rpm | tumbleweed | 3.8.11-1.1 | Not reported | OPENSUSE-SU-2025:15765-1 | Not reported |
| Suse | gnutls | rpm | linux enterprise micro 5.4 | 3.7.3-150400.4.53.1 | Not reported | SUSE-SU-2025:4525-1 | Not reported |
| Suse | gnutls | rpm | linux enterprise micro 5.5 | 3.7.3-150400.4.53.1 | Not reported | SUSE-SU-2025:4525-1 | Not reported |
| Suse | gnutls | rpm | linux micro 6.1 | 3.8.3-slfo.1.1_5.1 | Not reported | SUSE-SU-2025:21222-1 | Not reported |
| Suse | gnutls | rpm | linux micro 6.0 | 3.8.3-5.1 | Not reported | SUSE-SU-2025:21202-1 | Not reported |
| Suse | gnutls | rpm | linux enterprise server ltss extended security 12 sp5 | 3.3.27-3.15.1 | Not reported | SUSE-SU-2025:4346-1 | Not reported |
| Suse | gnutls | rpm | linux enterprise micro 5.2 | 3.6.7-150200.14.40.1 | Not reported | SUSE-SU-2025:4272-1 | Not reported |
| Suse | gnutls | rpm | linux enterprise micro 5.3 | 3.7.3-150400.19.1 | Not reported | SUSE-SU-2025:4271-1 | Not reported |
| Suse | gnutls | rpm | linux enterprise module for basesystem 15 sp6 | 3.8.3-150600.4.12.1 | Not reported | SUSE-SU-2025:4323-1 | Not reported |
| Suse | gnutls | rpm | linux enterprise module for basesystem 15 sp7 | 3.8.3-150600.4.12.1 | Not reported | SUSE-SU-2025:4323-1 | Not reported |
| Opensuse | gnutls | rpm | leap 15.6 | 3.8.3-150600.4.12.1 | Not reported | SUSE-SU-2025:4323-1 | Not reported |
OpenFactory catalog packages
[openSUSE Tumbleweed]
- [libgnutls30]Unknown
Source package: [gnutls]
Details (1)
3.8.13-3.1· x86_64 · tumbleweedUnknown · Fixed:
3.8.11-1.1Version impact unknown
usn · gnutls · opensuse · tumbleweed
- [libgnutls30-32bit]Unknown
Source package: [gnutls]
Details (1)
3.8.13-3.1· x86_64 · tumbleweedUnknown · Fixed:
3.8.11-1.1Version impact unknown
usn · gnutls · opensuse · tumbleweed
- [libgnutls-dane0]Unknown
Source package: [gnutls]
Details (1)
3.8.13-3.1· x86_64 · tumbleweedUnknown · Fixed:
3.8.11-1.1Version impact unknown
usn · gnutls · opensuse · tumbleweed
- [libgnutls-dane-devel]Unknown
Source package: [gnutls]
Details (1)
3.8.13-3.1· x86_64 · tumbleweedUnknown · Fixed:
3.8.11-1.1Version impact unknown
usn · gnutls · opensuse · tumbleweed
- [libgnutls-devel]Unknown
Source package: [gnutls]
Details (1)
3.8.13-3.1· x86_64 · tumbleweedUnknown · Fixed:
3.8.11-1.1Version impact unknown
usn · gnutls · opensuse · tumbleweed
- [libgnutls-devel-32bit]Unknown
Source package: [gnutls]
Details (1)
3.8.13-3.1· x86_64 · tumbleweedUnknown · Fixed:
3.8.11-1.1Version impact unknown
usn · gnutls · opensuse · tumbleweed
- [libgnutls-devel-doc]Unknown
Source package: [gnutls]
Details (1)
3.8.13-3.1· noarch · tumbleweedUnknown · Fixed:
3.8.11-1.1Version impact unknown
usn · gnutls · opensuse · tumbleweed
- [libgnutlsxx30]Unknown
Source package: [gnutls]
Details (1)
3.8.13-3.1· x86_64 · tumbleweedUnknown · Fixed:
3.8.11-1.1Version impact unknown
usn · gnutls · opensuse · tumbleweed
- [libgnutlsxx-devel]Unknown
Source package: [gnutls]
Details (1)
3.8.13-3.1· x86_64 · tumbleweedUnknown · Fixed:
3.8.11-1.1Version impact unknown
usn · gnutls · opensuse · tumbleweed
- [gnutls]Fixed
Source package: [gnutls]
Details (1)
3.8.13-3.1· x86_64 · tumbleweedFixed · Fixed:
3.8.11-1.1usn · gnutls · opensuse · tumbleweed
[Debian 12 (Bookworm)]
- [gnutls-bin]Fixed
Source package: [gnutls28]
Details (4)
3.7.9-2+deb12u7· amd64 · bookwormFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
3.7.9-2+deb12u7· arm64 · bookwormFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
3.7.9-2+deb12u7· amd64 · bookworm-securityFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
3.7.9-2+deb12u7· arm64 · bookworm-securityFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
- [gnutls-doc]Fixed
Source package: [gnutls28]
Details (4)
3.7.9-2+deb12u7· all · bookwormFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
3.7.9-2+deb12u7· all · bookwormFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
3.7.9-2+deb12u7· all · bookworm-securityFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
3.7.9-2+deb12u7· all · bookworm-securityFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
- [guile-gnutls]Fixed
Source package: [gnutls28]
Details (4)
3.7.9-2+deb12u7· amd64 · bookwormFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
3.7.9-2+deb12u7· arm64 · bookwormFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
3.7.9-2+deb12u7· amd64 · bookworm-securityFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
3.7.9-2+deb12u7· arm64 · bookworm-securityFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
- [libgnutls28-dev]Fixed
Source package: [gnutls28]
Details (4)
3.7.9-2+deb12u7· amd64 · bookwormFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
3.7.9-2+deb12u7· arm64 · bookwormFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
3.7.9-2+deb12u7· amd64 · bookworm-securityFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
3.7.9-2+deb12u7· arm64 · bookworm-securityFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
- [libgnutls30]Fixed
Source package: [gnutls28]
Details (4)
3.7.9-2+deb12u7· amd64 · bookwormFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
3.7.9-2+deb12u7· arm64 · bookwormFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
3.7.9-2+deb12u7· amd64 · bookworm-securityFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
3.7.9-2+deb12u7· arm64 · bookworm-securityFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
- [libgnutls-dane0]Fixed
Source package: [gnutls28]
Details (4)
3.7.9-2+deb12u7· amd64 · bookwormFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
3.7.9-2+deb12u7· arm64 · bookwormFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
3.7.9-2+deb12u7· amd64 · bookworm-securityFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
3.7.9-2+deb12u7· arm64 · bookworm-securityFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
- [libgnutls-openssl27]Fixed
Source package: [gnutls28]
Details (4)
3.7.9-2+deb12u7· amd64 · bookwormFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
3.7.9-2+deb12u7· arm64 · bookwormFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
3.7.9-2+deb12u7· amd64 · bookworm-securityFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
3.7.9-2+deb12u7· arm64 · bookworm-securityFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
- [libgnutlsxx30]Fixed
Source package: [gnutls28]
Details (4)
3.7.9-2+deb12u7· amd64 · bookwormFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
3.7.9-2+deb12u7· arm64 · bookwormFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
3.7.9-2+deb12u7· amd64 · bookworm-securityFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
3.7.9-2+deb12u7· arm64 · bookworm-securityFixed · Fixed:
3.7.9-2+deb12u6usn · gnutls28 · debian · bookworm
Observed:
References
- [https://cert-portal.siemens.com/productcert/csaf/ssa-032379.json]
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2025_21202-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2025-9820]
- [https://osv.dev/vulnerability/ALPINE-CVE-2025-9820]
- [https://osv.dev/vulnerability/SUSE-SU-2025:21202-1]
- [https://osv.dev/vulnerability/SUSE-SU-2025:21222-1]
- [https://osv.dev/vulnerability/SUSE-SU-2025:4271-1]
- [https://osv.dev/vulnerability/SUSE-SU-2025:4272-1]
- [https://osv.dev/vulnerability/SUSE-SU-2025:4323-1]
- [https://osv.dev/vulnerability/SUSE-SU-2025:4346-1]
- [https://osv.dev/vulnerability/SUSE-SU-2025:4525-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:2367-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2025-9820]
- [https://osv.dev/vulnerability/openSUSE-SU-2025:15765-1]
- [https://security-tracker.debian.org/tracker/CVE-2025-9820]
- [https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-9820.json]
- [https://ubuntu.com/security/notices/USN-8043-1]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0778.json]
[CERT-Bund public advisories] · [CISA cybersecurity advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]