{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-9820 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-9820 is a medium-severity memory corruption vulnerability in Cert Manager support for Red Hat OpenShift release 1.18, published on 26 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-9820 and fix it if it is affected.\n\nWhat it is: CVE-2025-9820 is a medium-severity memory corruption vulnerability in Cert Manager support for Red Hat OpenShift release 1.18, published on 26 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2025-9820 in the wild and no public exploit code.\n\nAffected product: Cert Manager support for Red Hat OpenShift release 1.18. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2025-9820/ (Markdown: https://insights.sbomify.com/CVE-2025-9820/index.md)","id":"CVE-2025-9820","markdown":"https://insights.sbomify.com/CVE-2025-9820/index.md","name":"CVE-2025-9820","record":{"aliases":["ALPINE-CVE-2025-9820","AZL-75258","AZL-75261","BELL-CVE-2025-9820","CLSA-2026-1775224602","DEBIAN-CVE-2025-9820","ECHO-ab0e-9ddf-13e5","GHSA-337w-h8w7-m899","MGASA-2025-0317","OESA-2026-1043","OESA-2026-1044","OESA-2026-1045","OESA-2026-1046","OESA-2026-1417","SUSE-SU-2025:21202-1","SUSE-SU-2025:21222-1","SUSE-SU-2025:4271-1","SUSE-SU-2025:4272-1","SUSE-SU-2025:4323-1","SUSE-SU-2025:4346-1","SUSE-SU-2025:4525-1","UBUNTU-CVE-2025-9820","openSUSE-SU-2025:15765-1"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"GnuTLS library","requires_auth":"none","summary":"A stack-based buffer overflow in GnuTLS allows attackers to cause denial of service or execute arbitrary code via crafted PKCS#11 token labels.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[],"cvss":{"score":4,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-121","name":"Stack-based Buffer Overflow"}],"description":"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.","ecosystems":["SUSE:Linux Enterprise Micro 5.2","SUSE:Linux Enterprise Micro 5.3","SUSE:Linux Enterprise Micro 5.4","SUSE:Linux Enterprise Micro 5.5","SUSE:Linux Enterprise Module for Basesystem 15 SP6","SUSE:Linux Enterprise Module for Basesystem 15 SP7","SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5","SUSE:Linux Micro 6.0","SUSE:Linux Micro 6.1","openSUSE:Leap 15.6","openSUSE:Tumbleweed"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Gnutls: stack-based buffer overflow in gnutls_pkcs11_token_init() function","id":"CVE-2025-9820","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2025"},"n_packages":11,"n_references":18,"next":{"headline":"SSRF via webhook function","id":"CVE-2025-9821"},"packages":[{"ecosystem":"SUSE:Linux Enterprise Micro 5.2","fixed":["3.6.7-150200.14.40.1"],"introduced":["0"],"last_affected":[],"package":"gnutls","purl":"pkg:rpm/suse/gnutls\u0026distro=SUSE%20Linux%20Enterprise%20Micro%205.2","source":"SUSE-SU-2025:4272-1"},{"ecosystem":"SUSE:Linux Enterprise Micro 5.3","fixed":["3.7.3-150400.19.1"],"introduced":["0"],"last_affected":[],"package":"gnutls","purl":"pkg:rpm/suse/gnutls\u0026distro=SUSE%20Linux%20Enterprise%20Micro%205.3","source":"SUSE-SU-2025:4271-1"},{"ecosystem":"SUSE:Linux Enterprise Micro 5.4","fixed":["3.7.3-150400.4.53.1"],"introduced":["0"],"last_affected":[],"package":"gnutls","purl":"pkg:rpm/suse/gnutls\u0026distro=SUSE%20Linux%20Enterprise%20Micro%205.4","source":"SUSE-SU-2025:4525-1"},{"ecosystem":"SUSE:Linux Enterprise Micro 5.5","fixed":["3.7.3-150400.4.53.1"],"introduced":["0"],"last_affected":[],"package":"gnutls","purl":"pkg:rpm/suse/gnutls\u0026distro=SUSE%20Linux%20Enterprise%20Micro%205.5","source":"SUSE-SU-2025:4525-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP6","fixed":["3.8.3-150600.4.12.1"],"introduced":["0"],"last_affected":[],"package":"gnutls","purl":"pkg:rpm/suse/gnutls\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6","source":"SUSE-SU-2025:4323-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP7","fixed":["3.8.3-150600.4.12.1"],"introduced":["0"],"last_affected":[],"package":"gnutls","purl":"pkg:rpm/suse/gnutls\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7","source":"SUSE-SU-2025:4323-1"},{"ecosystem":"SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5","fixed":["3.3.27-3.15.1"],"introduced":["0"],"last_affected":[],"package":"gnutls","purl":"pkg:rpm/suse/gnutls\u0026distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5","source":"SUSE-SU-2025:4346-1"},{"ecosystem":"SUSE:Linux Micro 6.0","fixed":["3.8.3-5.1"],"introduced":["0"],"last_affected":[],"package":"gnutls","purl":"pkg:rpm/suse/gnutls\u0026distro=SUSE%20Linux%20Micro%206.0","source":"SUSE-SU-2025:21202-1"},{"ecosystem":"SUSE:Linux Micro 6.1","fixed":["3.8.3-slfo.1.1_5.1"],"introduced":["0"],"last_affected":[],"package":"gnutls","purl":"pkg:rpm/suse/gnutls\u0026distro=SUSE%20Linux%20Micro%206.1","source":"SUSE-SU-2025:21222-1"},{"ecosystem":"openSUSE:Leap 15.6","fixed":["3.8.3-150600.4.12.1"],"introduced":["0"],"last_affected":[],"package":"gnutls","purl":"pkg:rpm/opensuse/gnutls\u0026distro=openSUSE%20Leap%2015.6","source":"SUSE-SU-2025:4323-1"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["3.8.11-1.1"],"introduced":["0"],"last_affected":[],"package":"gnutls","purl":"pkg:rpm/opensuse/gnutls\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2025:15765-1"}],"prev":{"headline":"Privilege escalation in PowerAct Pro \u003cMaster Agent\u003e","id":"CVE-2025-9818"},"products":["Cert Manager support for Red Hat OpenShift release 1.18","RHEL-8 based Middleware Containers","Red Hat Ceph Storage 8","Red Hat Discovery 2","Red Hat Enterprise Linux 10","Red Hat Enterprise Linux 6","Red Hat Enterprise Linux 7","Red Hat Enterprise Linux 8","Red Hat Enterprise Linux 9","Red Hat Hardened Images","Red Hat Insights proxy 1.5","Red Hat OpenShift Container Platform 4","Red Hat Update Infrastructure 5"],"published":"2026-01-26","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"SUSE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-14","vendors":["Red Hat"]},"summary":"A stack-based buffer overflow in GnuTLS allows attackers to cause denial of service or execute arbitrary code via crafted PKCS#11 token labels.","url":"https://insights.sbomify.com/CVE-2025-9820/"}