CVE-2026-11610
Estado: Pendiente de análisisAlta (8.8)—
A heap buffer overflow flaw was found in the SASL I/O layer of 389 Directory Server (389-ds-base). After a successful SASL bind with integrity protection (SSF > 0), an authenticated attacker can send a specially crafted oversized LDAP UNBIND packet that is copied into a 512-byte heap receive buffer without a bounds check in sasl_io_recv() in sasl_io.c. This allows up to approximately 2 megabytes of attacker-controlled data to overflow the buffer, causing a denial of service (server crash).
Leer descripción completaMostrar menos
In FreeIPA and Red Hat Identity Management deployments, any domain user with a valid Kerberos ticket, any enrolled host, or any service account can trigger this vulnerability over the network after authenticating via GSSAPI. The vulnerable code path has existed since approximately 2013 (389-ds-base 1.3.2) and was not addressed by the CVE-2025-14905 fix, which patched a separate heap overflow in schema.c only.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 8.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.49%
- Percentil entre todas las CVEs puntuadas: 40
- Fecha de la puntuación: 5/10/2026
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
T1210Exploitation of Remote Serviceslateral movement85 % - Impacto principal
T1499.004Application or System Exploitationimpact90 % - Impacto secundario
T1068Exploitation for Privilege Escalationprivilege escalation45 %
Acceso remoto autenticado (PR:L, AV:N) en servicio LDAP/SASL. El desbordamiento causa crash (DoS), y potencialmente escalada si el proceso corre como root. Confidencialidad e integridad altas sugieren posible lectura/modificación en crash.
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 (3)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
CWE
- CWE-122
Referencias
- https://access.redhat.com/errata/RHSA-2026:36195
- https://access.redhat.com/errata/RHSA-2026:36196
- https://access.redhat.com/errata/RHSA-2026:36197
- https://access.redhat.com/errata/RHSA-2026:36198
- https://access.redhat.com/errata/RHSA-2026:36200
- https://access.redhat.com/errata/RHSA-2026:36201
- https://access.redhat.com/errata/RHSA-2026:36202
- https://access.redhat.com/errata/RHSA-2026:36204
- https://access.redhat.com/errata/RHSA-2026:36205
- https://access.redhat.com/errata/RHSA-2026:36206
- https://access.redhat.com/errata/RHSA-2026:36208
- https://access.redhat.com/errata/RHSA-2026:36209
- https://access.redhat.com/errata/RHSA-2026:36585
- https://access.redhat.com/errata/RHSA-2026:36641
- https://access.redhat.com/errata/RHSA-2026:36660
- https://access.redhat.com/errata/RHSA-2026:36670
- https://access.redhat.com/errata/RHSA-2026:36671
- https://access.redhat.com/security/cve/CVE-2026-11610
- https://bugzilla.redhat.com/show_bug.cgi?id=2484414
JSON original (NVD)
Mostrar
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"published": "2026-07-07T10:16:39.690",
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"description": [
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"value": "A heap buffer overflow flaw was found in the SASL I/O layer of 389 Directory Server\n(389-ds-base). After a successful SASL bind with integrity protection (SSF > 0),\nan authenticated attacker can send a specially crafted oversized LDAP UNBIND packet\nthat is copied into a 512-byte heap receive buffer without a bounds check in\nsasl_io_recv() in sasl_io.c. This allows up to approximately 2 megabytes of\nattacker-controlled data to overflow the buffer, causing a denial of service (server\ncrash). In FreeIPA and Red Hat Identity Management deployments, any domain user with\na valid Kerberos ticket, any enrolled host, or any service account can trigger this\nvulnerability over the network after authenticating via GSSAPI.\nThe vulnerable code path has existed since approximately 2013 (389-ds-base 1.3.2) and\nwas not addressed by the CVE-2025-14905 fix, which patched a separate heap overflow\nin schema.c only."
}
],
"lastModified": "2026-07-08T21:16:46.137",
"sourceIdentifier": "secalert@redhat.com"
}