CVE-2026-18922
Estado: Pendiente de análisisCrítica (9.8)—
A flaw was found in 389 Directory Server. During SASL PLAIN authentication, a stale identity carried in a Cyrus SASL auxiliary property from a prior failed bind attempt can be installed on a connection following a subsequent, unrelated successful bind, regardless of which SASL mechanism completes that second bind. An attacker can send a SASL PLAIN bind as cn=Directory Manager with an incorrect password, then complete a SASL ANONYMOUS bind on the same connection, causing the server to grant Directory Manager authority without any valid credentials. A variant using a valid low-privileged account's own successful bind instead of an anonymous one is also possible.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 9.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.56%
- Percentil entre todas las CVEs puntuadas: 45
- 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 access92 % - Impacto principal
T1078Valid Accountsstealth · persistence · privilege escalation · initial access95 % - Impacto secundario
T1068Exploitation for Privilege Escalationprivilege escalation88 %
AV:N/AC:L/PR:N sin interacción permite explotación remota sin privilegios (T1190). La vulnerabilidad de reutilización de identidad SASL en autenticación permite obtener credenciales válidas de Directory Manager (T1078) y escalada de privilegios administrativos (T1068).
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-287
Referencias
- https://access.redhat.com/errata/RHSA-2026:64771
- https://access.redhat.com/errata/RHSA-2026:64776
- https://access.redhat.com/errata/RHSA-2026:64778
- https://access.redhat.com/errata/RHSA-2026:64779
- https://access.redhat.com/errata/RHSA-2026:64780
- https://access.redhat.com/errata/RHSA-2026:64781
- https://access.redhat.com/errata/RHSA-2026:64783
- https://access.redhat.com/errata/RHSA-2026:64784
- https://access.redhat.com/errata/RHSA-2026:64785
- https://access.redhat.com/errata/RHSA-2026:64789
- https://access.redhat.com/errata/RHSA-2026:64790
- https://access.redhat.com/errata/RHSA-2026:64791
- https://access.redhat.com/errata/RHSA-2026:64792
- https://access.redhat.com/errata/RHSA-2026:64793
- https://access.redhat.com/errata/RHSA-2026:64804
- https://access.redhat.com/errata/RHSA-2026:64811
- https://access.redhat.com/security/cve/CVE-2026-18922
- https://bugzilla.redhat.com/show_bug.cgi?id=2511388
JSON original (NVD)
Mostrar
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}
],
"lastModified": "2026-09-08T19:08:15.590",
"sourceIdentifier": "secalert@redhat.com"
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