CVE-2026-5367
A flaw was found in OVN (Open Virtual Network). A remote attacker, by sending crafted DHCPv6 (Dynamic Host Configuration Protocol for IPv6) SOLICIT packets with an inflated Client ID length, could cause the ovn-controller to read beyond the bounds of a packet. This out-of-bounds read can lead to the disclosure of sensitive information stored in heap memory, which is then returned to the attacker's virtual machine port.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
- Puntuación base: 8.6
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.88%
- Percentil entre todas las CVEs puntuadas: 58
- Fecha de la puntuación: 2/10/2026
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 access95 % - Impacto principal
T1005Data from Local Systemcollection90 %
Vulnerability in OVN network service (AV:N, PR:N, UI:N) exploitable remotely without authentication. Out-of-bounds read discloses heap memory contents to attacker.
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 (1)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
CWE
- CWE-130
- CWE-130
Referencias
- https://access.redhat.com/errata/RHSA-2026:11694
- https://access.redhat.com/errata/RHSA-2026:11695
- https://access.redhat.com/errata/RHSA-2026:11696
- https://access.redhat.com/errata/RHSA-2026:11698
- https://access.redhat.com/errata/RHSA-2026:11700
- https://access.redhat.com/errata/RHSA-2026:11701
- https://access.redhat.com/errata/RHSA-2026:11702
- https://access.redhat.com/errata/RHSA-2026:22110
- https://access.redhat.com/errata/RHSA-2026:22111
- https://access.redhat.com/security/cve/CVE-2026-5367
- https://bugzilla.redhat.com/show_bug.cgi?id=2455863
- http://www.openwall.com/lists/oss-security/2026/04/20/3
- http://www.openwall.com/lists/oss-security/2026/04/20/5
- https://access.redhat.com/errata/RHSA-2026:11694
- https://access.redhat.com/errata/RHSA-2026:11695
- https://access.redhat.com/errata/RHSA-2026:11696
- https://access.redhat.com/errata/RHSA-2026:11698
- https://access.redhat.com/errata/RHSA-2026:11700
- https://access.redhat.com/errata/RHSA-2026:11701
- https://access.redhat.com/errata/RHSA-2026:11702
- https://access.redhat.com/errata/RHSA-2026:22110
- https://access.redhat.com/errata/RHSA-2026:22111
- https://access.redhat.com/security/cve/CVE-2026-5367
- https://bugzilla.redhat.com/show_bug.cgi?id=2455863
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5367.json
JSON original (NVD)
Mostrar
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