FKIE_CVE-2026-11787

Vulnerability from fkie_nvd - Published: 2026-06-09 14:16 - Updated: 2026-07-23 08:10
Severity
5.0 (Medium) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
6.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Summary
A flaw was found in 389 Directory Server. The ldap_utf8prev() function reads bytes before the start of a buffer without bounds checking, causing a heap buffer over-read in string filter parsing that may influence internal filter processing behavior.
References
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2026-11787Vendor Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2485425Issue Tracking, Vendor Advisory
Impacted products
Vendor Product Version
redhat directory_server 11.0
redhat directory_server 12.0
redhat directory_server 13.0
redhat 389_directory_server -
redhat enterprise_linux 7.0
redhat enterprise_linux 8.0
redhat enterprise_linux 9.0
redhat enterprise_linux 10.0
To clipboard 

{
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          "cpes": [
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          ],
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          "vendor": "Red Hat"
        },
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          "cpes": [
            "cpe:/a:redhat:directory_server:12"
          ],
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          "packageName": "redhat-ds:12/389-ds-base",
          "product": "Red Hat Directory Server 12",
          "vendor": "Red Hat"
        },
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        },
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          ],
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          "packageName": "389-ds-base",
          "product": "Red Hat Enterprise Linux 10",
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        },
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          "cpes": [
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          "packageName": "389-ds-base",
          "product": "Red Hat Enterprise Linux 6",
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        },
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          "cpes": [
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          "product": "Red Hat Enterprise Linux 7",
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        },
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          "product": "Red Hat Enterprise Linux 8",
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        },
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          "cpes": [
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          ],
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          "packageName": "389-ds-base",
          "product": "Red Hat Enterprise Linux 9",
          "vendor": "Red Hat"
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
  "configurations": [
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in 389 Directory Server. The ldap_utf8prev() function reads bytes before the start of a buffer without bounds checking, causing a heap buffer over-read in string filter parsing that may influence internal filter processing behavior."
    },
    {
      "lang": "es",
      "value": "Se encontr\u00f3 un fallo en 389 Directory Server. La funci\u00f3n ldap_utf8prev() lee bytes antes del inicio de un b\u00fafer sin comprobaci\u00f3n de l\u00edmites, causando una sobrelectura del b\u00fafer de pila en el an\u00e1lisis de filtros de cadena que puede influir en el comportamiento interno de procesamiento de filtros."
    }
  ],
  "id": "CVE-2026-11787",
  "lastModified": "2026-07-23T08:10:00.137",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 5.0,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L",
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            {
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            {
              "technicalImpact": "partial"
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          "role": "CISA Coordinator",
          "timestamp": "2026-06-09T13:30:15.301451Z",
          "version": "2.0.3"
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  "published": "2026-06-09T14:16:36.773",
  "references": [
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      "source": "secalert@redhat.com",
      "tags": [
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  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
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          "value": "CWE-126"
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      ],
      "source": "secalert@redhat.com",
      "type": "Secondary"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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