CVE-2025-6021
Estado: ModificadaAlta (7.5)—
A flaw was found in libxml2's xmlBuildQName function, where integer overflows in buffer size calculations can lead to a stack-based buffer overflow. This issue can result in memory corruption or a denial of service when processing crafted input.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 7.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 1.37%
- Percentil entre todas las CVEs puntuadas: 71
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1190Exploit Public-Facing Applicationinitial access85 % - Impacto principal
T1499.004Application or System Exploitationimpact90 % - Impacto secundario
T1565.001Stored Data Manipulationimpact70 %
CVE-2025-6021: vector CVSS AV:N/AC:L/PR:N sin UI → T1190 (aplicación expuesta en red). CWE-787 (buffer overflow) permite DoS (T1499.004) e corrupción de memoria (T1565.001). libxml2 es librería remota accesible.
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (20)
Redhat — Enterprise LinuxRedhat — Enterprise Linux EUSRedhat — Enterprise Linux FOR ARM 64Redhat — Enterprise Linux FOR ARM 64 EUSRedhat — Enterprise Linux FOR IBM Z SystemsRedhat — Enterprise Linux FOR IBM Z Systems EUSRedhat — Enterprise Linux FOR Power Little EndianRedhat — Enterprise Linux FOR Power Little Endian EUSRedhat — Enterprise Linux ServerRedhat — Enterprise Linux Server AUSRedhat — Enterprise Linux Server FOR Power Little Endian Update Services FOR SAP SolutionsRedhat — Enterprise Linux Server TUSRedhat — In-vehicle Operating SystemRedhat — Jboss Core ServicesRedhat — Openshift Container PlatformRedhat — Openshift Container Platform FOR Arm64Redhat — Openshift Container Platform FOR IBM ZRedhat — Openshift Container Platform FOR LinuxoneRedhat — Openshift Container Platform FOR PowerXmlsoft — Libxml2
CWE
- CWE-787
- CWE-787
Referencias
- https://access.redhat.com/errata/RHSA-2025:10630
- https://access.redhat.com/errata/RHSA-2025:10698
- https://access.redhat.com/errata/RHSA-2025:10699
- https://access.redhat.com/errata/RHSA-2025:11580
- https://access.redhat.com/errata/RHSA-2025:11673
- https://access.redhat.com/errata/RHSA-2025:12098
- https://access.redhat.com/errata/RHSA-2025:12099
- https://access.redhat.com/errata/RHSA-2025:12199
- https://access.redhat.com/errata/RHSA-2025:12237
- https://access.redhat.com/errata/RHSA-2025:12239
- https://access.redhat.com/errata/RHSA-2025:12240
- https://access.redhat.com/errata/RHSA-2025:12241
- https://access.redhat.com/errata/RHSA-2025:13267
- https://access.redhat.com/errata/RHSA-2025:13289
- https://access.redhat.com/errata/RHSA-2025:13325
- https://access.redhat.com/errata/RHSA-2025:13335
- https://access.redhat.com/errata/RHSA-2025:13336
- https://access.redhat.com/errata/RHSA-2025:14059
- https://access.redhat.com/errata/RHSA-2025:14396
- https://access.redhat.com/errata/RHSA-2025:15308
- https://access.redhat.com/errata/RHSA-2025:15672
- https://access.redhat.com/errata/RHSA-2025:19020
- https://access.redhat.com/errata/RHSA-2026:7519
- https://access.redhat.com/security/cve/CVE-2025-6021
- https://bugzilla.redhat.com/show_bug.cgi?id=2372406
- https://gitlab.gnome.org/GNOME/libxml2/-/issues/926
- https://lists.debian.org/debian-lts-announce/2025/07/msg00014.html
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html
- https://gitlab.gnome.org/GNOME/libxml2/-/issues/926
JSON original (NVD)
Mostrar
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"published": "2025-06-12T13:15:25.590",
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"tags": [
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],
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},
{
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