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    2 vulnerabilities by SEP

    CVE-2026-79300 (GCVE-0-2026-79300)

    Vulnerability from nvd – Published: 2026-09-12 22:20 – Updated: 2026-09-12 22:20
    VLAI
    Summary
    SEP sesam before 5.2.0.24 mishandles User Authorization with MFA. If AD authentication is configured and MFA is enforced, an attacker can create a second OTP access capability. SEP sesam and Active Directory handle username capitalization differently, which may allow multiple SEP sesam user accounts to be created for the same Active Directory (AD) account. Active Directory treats usernames as case-insensitive, while SEP sesam distinguishes between different letter casing. As a result, the same AD user can be represented by multiple SEP sesam user accounts that differ only in username capitalization. When Active Directory authentication is configured and multi-factor authentication (MFA) is enforced, this behavior may allow an additional OTP Authenticator to be registered for the same AD account, reducing the effectiveness of MFA protection.
    Severity
    3.5 (Low)
    CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:N
    CWE
    • CWE-180 - Incorrect Behavior Order: Validate Before Canonicalize
    Assigner
    References
    URL Tags
    https://wiki.sep.de/wiki/index.php/Release_Notes_… release-notesvendor-advisory
    Impacted products
    Vendor Product Version
    SEP sesam Affected: 1.0 , < 5.2.0.24 (custom)
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Windows",
            "Linux",
            "x86",
            "ARM",
            "64 bit"
          ],
          "product": "sesam",
          "vendor": "SEP",
          "versions": [
            {
              "lessThan": "5.2.0.24",
              "status": "affected",
              "version": "1.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "SEP sesam before 5.2.0.24 mishandles User Authorization with MFA. If AD authentication is configured and MFA is enforced, an attacker can create a second OTP access capability. SEP sesam and Active Directory handle username capitalization differently, which may allow multiple SEP sesam user accounts to be created for the same Active Directory (AD) account. Active Directory treats usernames as case-insensitive, while SEP sesam distinguishes between different letter casing. As a result, the same AD user can be represented by multiple SEP sesam user accounts that differ only in username capitalization. When Active Directory authentication is configured and multi-factor authentication (MFA) is enforced, this behavior may allow an additional OTP Authenticator to be registered for the same AD account, reducing the effectiveness of MFA protection."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 3.5,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:N",
            "version": "3.1"
          },
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      ],
      "problemTypes": [
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          "descriptions": [
            {
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              "description": "CWE-180 Incorrect Behavior Order: Validate Before Canonicalize",
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              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
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        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
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            "release-notes",
            "vendor-advisory"
          ],
          "url": "https://wiki.sep.de/wiki/index.php/Release_Notes_5.2.0_Artemis#fixed"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "The issue is fixed in latest release versions \u0026gt;= v5.2.0.24. It is strongly recommended to update, if AD authentication is in use."
            }
          ],
          "value": "The issue is fixed in latest release versions \u003e= v5.2.0.24. It is strongly recommended to update, if AD authentication is in use."
        }
      ],
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    "assignerShortName": "mitre",
    "cveId": "CVE-2026-79300",
    "datePublished": "2026-09-12T22:20:40.289Z",
    "dateReserved": "2026-08-25T06:14:33.619Z",
    "dateUpdated": "2026-09-12T22:20:40.289Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

    CVE-2026-79300 (GCVE-0-2026-79300)

    Vulnerability from cvelistv5 – Published: 2026-09-12 22:20 – Updated: 2026-09-12 22:20
    VLAI
    Summary
    SEP sesam before 5.2.0.24 mishandles User Authorization with MFA. If AD authentication is configured and MFA is enforced, an attacker can create a second OTP access capability. SEP sesam and Active Directory handle username capitalization differently, which may allow multiple SEP sesam user accounts to be created for the same Active Directory (AD) account. Active Directory treats usernames as case-insensitive, while SEP sesam distinguishes between different letter casing. As a result, the same AD user can be represented by multiple SEP sesam user accounts that differ only in username capitalization. When Active Directory authentication is configured and multi-factor authentication (MFA) is enforced, this behavior may allow an additional OTP Authenticator to be registered for the same AD account, reducing the effectiveness of MFA protection.
    Severity
    3.5 (Low)
    CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:N
    CWE
    • CWE-180 - Incorrect Behavior Order: Validate Before Canonicalize
    Assigner
    References
    URL Tags
    https://wiki.sep.de/wiki/index.php/Release_Notes_… release-notesvendor-advisory
    Impacted products
    Vendor Product Version
    SEP sesam Affected: 1.0 , < 5.2.0.24 (custom)
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Windows",
            "Linux",
            "x86",
            "ARM",
            "64 bit"
          ],
          "product": "sesam",
          "vendor": "SEP",
          "versions": [
            {
              "lessThan": "5.2.0.24",
              "status": "affected",
              "version": "1.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "SEP sesam before 5.2.0.24 mishandles User Authorization with MFA. If AD authentication is configured and MFA is enforced, an attacker can create a second OTP access capability. SEP sesam and Active Directory handle username capitalization differently, which may allow multiple SEP sesam user accounts to be created for the same Active Directory (AD) account. Active Directory treats usernames as case-insensitive, while SEP sesam distinguishes between different letter casing. As a result, the same AD user can be represented by multiple SEP sesam user accounts that differ only in username capitalization. When Active Directory authentication is configured and multi-factor authentication (MFA) is enforced, this behavior may allow an additional OTP Authenticator to be registered for the same AD account, reducing the effectiveness of MFA protection."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 3.5,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:N",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-180",
              "description": "CWE-180 Incorrect Behavior Order: Validate Before Canonicalize",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-12T22:20:40.289Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "release-notes",
            "vendor-advisory"
          ],
          "url": "https://wiki.sep.de/wiki/index.php/Release_Notes_5.2.0_Artemis#fixed"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "The issue is fixed in latest release versions \u0026gt;= v5.2.0.24. It is strongly recommended to update, if AD authentication is in use."
            }
          ],
          "value": "The issue is fixed in latest release versions \u003e= v5.2.0.24. It is strongly recommended to update, if AD authentication is in use."
        }
      ],
      "x_generator": {
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      }
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  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2026-79300",
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    "dateReserved": "2026-08-25T06:14:33.619Z",
    "dateUpdated": "2026-09-12T22:20:40.289Z",
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  },
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