CVE-2025-14831

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-14831", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2025-12-17T14:44:59.859Z", "datePublished": "2026-02-09T14:51:32.447Z", "dateUpdated": "2026-11-05T14:18:15.970Z"}, "containers": {"cna": {"title": "Gnutls: gnutls: denial of service via excessive resource consumption during certificate verification", "metrics": [{"other": {"content": {"value": "Moderate", "namespace": "https://access.redhat.com/security/updates/classification/"}, "type": "Red Hat severity rating"}}, {"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "format": "CVSS"}], "descriptions": [{"lang": "en", "value": "A flaw was found in GnuTLS. This vulnerability allows a denial of service (DoS) by excessive CPU (Central Processing Unit) and memory consumption via specially crafted malicious certificates containing a large number of name constraints and subject alternative names (SANs)."}], "affected": [{"versions": [{"status": "affected", "version": "0"}], "packageName": "gnutls", "collectionURL": "https://gitlab.com/gnutls/gnutls"}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "gnutls", "defaultStatus": "affected", "versions": [{"version": "0:3.8.10-3.el10_1", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/o:redhat:enterprise_linux:10.1"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10.0 Extended Update Support", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "gnutls", "defaultStatus": "affected", "versions": 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Esta vulnerabilidad permite una denegaci\u00f3n de servicio (DoS) mediante un consumo excesivo de CPU (Unidad Central de Procesamiento) y memoria a trav\u00e9s de certificados maliciosos especialmente dise\u00f1ados que contienen un gran n\u00famero de restricciones de nombre y nombres alternativos del sujeto (SANs)."}], "id": "CVE-2025-14831", "lastModified": "2026-11-05T15:17:11.460", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "secalert@redhat.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-14831", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-02-09T15:25:49.680881Z", "version": "2.0.3"}}]}, "published": "2026-02-09T15:16:09.937", "references": [{"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:13812"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:16008"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:16009"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:16174"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:25096"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:30849"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:30850"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:33125"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:3477"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:4188"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:4655"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:4943"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:5585"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:5606"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:6618"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:6630"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:6737"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:6738"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:7329"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:7335"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:7477"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:82347"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:82354"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:82372"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:82857"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:8746"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:8747"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:8748"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/security/cve/CVE-2025-14831"}, {"source": "secalert@redhat.com", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2423177"}, {"source": "secalert@redhat.com", "url": "https://gitlab.com/gnutls/gnutls/-/issues/1773"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-032379.html"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-407"}], "source": "secalert@redhat.com", "type": "Secondary"}]}

{"bugzilla": {"description": "gnutls: GnuTLS: Denial of Service via excessive resource consumption during certificate verification", "id": "2423177", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2423177"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "status": "draft"}, "cwe": "CWE-407", "details": ["A flaw was found in GnuTLS. This vulnerability allows a denial of service (DoS) by excessive CPU (Central Processing Unit) and memory consumption via specially crafted malicious certificates containing a large number of name constraints and subject alternative names (SANs)."], "name": "CVE-2025-14831", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "gnutls", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Affected", "package_name": "gnutls", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "gnutls", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "gnutls", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "gnutls", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-02-09T14:26:34Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-14831\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-14831"], "statement": "This vulnerability is rated Moderate for Red Hat. GnuTLS is susceptible to a denial of service attack due to excessive CPU and memory consumption. This occurs when processing specially crafted malicious certificates containing a large number of name constraints and subject alternative names (SANs) during certificate verification.", "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": null}], "product": "enterprise_linux", "vendor": "red_hat"}, {"configurations": [{"platform": null, "status": "affected", "versions": null}], "product": "openshift_container_platform", "vendor": "redhat"}], "analysis": {"en": {"generated_at": "2026-04-20T15:36:09.446533+00:00", "value": {"mitigation_remediation": ["Install the latest Red\u00a0Hat package updates RHSA\u20112026:3477 and related errata to upgrade GnuTLS to the fixed release.", "After updating, restart all services that use GnuTLS, such as web servers, database connectors, and certificate verification components, to load the patched library.", "If a patch cannot be applied immediately, restrict inbound TLS traffic to trusted clients or temporarily disable services that use the vulnerable library until the update is available."], "summary": {"action": "Apply Patch", "impact": "Denial of Service"}, "threat_synthesis": {"affected_systems": "Affected products include Red\u00a0Hat AI Inference Server 3.2 and 3.3, Red\u00a0Hat Ceph Storage 8, Red\u00a0Hat Discovery 2, several releases of Red\u00a0Hat Enterprise Linux (6,\u202f7,\u202f8,\u202f9,\u202f10 and related extended update support branches), Red\u00a0Hat Hardened Images, Red\u00a0Hat Insights proxy 1.5, Red\u00a0Hat OpenShift Container Platform 4, and Red\u00a0Hat Update Infrastructure 5. All of these incorporate the vulnerable GnuTLS library and are susceptible.", "description_and_impact": "The vulnerability resides in GnuTLS and permits a denial of service by forcing the library to consume excessive CPU and memory while verifying certificates that contain a very large number of name constraints or subject alternative names. The result is that the TLS handshake stalls or crashes, preventing legitimate connections from succeeding and potentially exhausting system resources.", "risk_and_exploitability": "The CVSS score of 5.3 places the vulnerability in the medium severity range. The EPSS score is below 1%, indicating a very low probability of exploitation in the wild as of now, and the vulnerability is not listed in CISA's KEV catalog. Nevertheless, an attacker could trigger the denial of service by presenting a malicious certificate during a TLS handshake, a remote path that is typically available to networked clients. The exploit would require the target to load the vulnerable GnuTLS library, which is present in most of the listed Red\u00a0Hat products."}}}}, "created": "2026-02-10T15:37:37.333272+00:00", "updated": "2026-04-20T15:45:10.369832+00:00", "vendors": ["red_hat", "red_hat$PRODUCT$enterprise_linux", "redhat", "redhat$PRODUCT$openshift_container_platform"]}