Vulnerability-Lookup

GHSA-PG5V-5C7M-XQ99

Vulnerability from github – Published: 2026-09-14 18:31 – Updated: 2026-09-15 18:32

Details

The vulnerabilities tracked by CVE-2026-76441 are related to issues with improper access control that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-284.

Severity

9.8 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-76441"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-284"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-14T17:17:50Z",
    "severity": "CRITICAL"
  },
  "details": "As part of Cisco\u0027s ongoing commitment to proactive security and product quality, the Cisco Secure Email Gateway and Cisco Secure Email and Web Manager engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.\n\nThe vulnerabilities tracked by CVE-2026-76441 are related to issues with improper access control that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-284.",
  "id": "GHSA-pg5v-5c7m-xq99",
  "modified": "2026-09-15T18:32:18Z",
  "published": "2026-09-14T18:31:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-76441"
    },
    {
      "type": "WEB",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-esa-dfCrfXkm"
    },
    {
      "type": "WEB",
      "url": "https://www.cve.org/Media/News/item/blog/2026/06/16/Preserving-Vulnerability-Level-Identification"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-76441 (GCVE-0-2026-76441)

Vulnerability from cvelistv5 – Published: 2026-09-14 16:08 – Updated: 2026-09-15 17:03

CVE Program bundle warning

The CVE Program recognizes that this CVE Record provides vulnerability information that a Supplier CNA believes is very important to consumers. The CVE Program has flagged this CVE Record as it assigns a single CVE ID to a collection of individual vulnerabilities which does not align with CVE's "one vulnerability, one ID" principle, and therefore provides incomplete information. For further clarification, please see the CVE Program's blog, "Preserving Vulnerability-Level Identification" linked below. Details within the CNA container below are viewable by clicking on the CNA name.

https://www.cve.org/Media/News/item/blog/2026/06/…

Title

Cisco Secure Email Gateway Security Hardening Release

Summary

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Email Gateway and Cisco Secure Email and Web Manager engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-76441 are related to issues with improper access control that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-284.

Severity

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-15 03:56 UTC

CWE

CWE-284 - Improper Access Control

Assigner

cisco mitre root

References

1 reference

URL	Tags
https://sec.cloudapps.cisco.com/security/center/c…

Impacted products

1 product

Vendor	Product	Version
Cisco	Cisco Secure Email and Web Manager	Affected: 13.6.2-023 Affected: 13.6.2-078 Affected: 13.0.0-249 Affected: 13.0.0-277 Affected: 13.8.1-052 Affected: 13.8.1-068 Affected: 13.8.1-074 Affected: 14.0.0-404 Affected: 12.8.1-002 Affected: 14.1.0-227 Affected: 13.6.1-201 Affected: 14.2.0-203 Affected: 14.2.0-212 Affected: 12.8.1-021 Affected: 13.8.1-108 Affected: 14.2.0-224 Affected: 14.3.0-120 Affected: 15.0.0-334 Affected: 15.5.1-024 Affected: 15.5.1-029 Affected: 15.5.2-005 Affected: 16.0.0-195 Affected: 15.5.3-017 Affected: 16.0.1-010 Affected: 15.0.1-035 Affected: 16.0.2-088 Affected: 15.5.4-007 Affected: 15.0.2-007 Affected: 16.0.4-010 Affected: 16.0.3-016

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-76441",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-15T03:56:10.366362Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-15T16:32:12.515Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "descriptions": [
          {
            "lang": "en",
            "value": "The CVE Program recognizes that this CVE Record provides vulnerability information that a Supplier CNA believes is very important to consumers. The CVE Program has flagged this CVE Record as it assigns a single CVE ID to a collection of individual vulnerabilities which does not align with CVE\u0027s \"one vulnerability, one ID\" principle, and therefore provides incomplete information. For further clarification, please see the CVE Program\u0027s blog, \"Preserving Vulnerability-Level Identification\" linked below. Details within the CNA container below are viewable by clicking on the CNA name."
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-15T17:03:57.836Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://www.cve.org/Media/News/item/blog/2026/06/16/Preserving-Vulnerability-Level-Identification"
          }
        ],
        "tags": [
          "x_bundling-flagged-by-CVE-Program"
        ]
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "Cisco Secure Email and Web Manager",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "13.6.2-023"
            },
            {
              "status": "affected",
              "version": "13.6.2-078"
            },
            {
              "status": "affected",
              "version": "13.0.0-249"
            },
            {
              "status": "affected",
              "version": "13.0.0-277"
            },
            {
              "status": "affected",
              "version": "13.8.1-052"
            },
            {
              "status": "affected",
              "version": "13.8.1-068"
            },
            {
              "status": "affected",
              "version": "13.8.1-074"
            },
            {
              "status": "affected",
              "version": "14.0.0-404"
            },
            {
              "status": "affected",
              "version": "12.8.1-002"
            },
            {
              "status": "affected",
              "version": "14.1.0-227"
            },
            {
              "status": "affected",
              "version": "13.6.1-201"
            },
            {
              "status": "affected",
              "version": "14.2.0-203"
            },
            {
              "status": "affected",
              "version": "14.2.0-212"
            },
            {
              "status": "affected",
              "version": "12.8.1-021"
            },
            {
              "status": "affected",
              "version": "13.8.1-108"
            },
            {
              "status": "affected",
              "version": "14.2.0-224"
            },
            {
              "status": "affected",
              "version": "14.3.0-120"
            },
            {
              "status": "affected",
              "version": "15.0.0-334"
            },
            {
              "status": "affected",
              "version": "15.5.1-024"
            },
            {
              "status": "affected",
              "version": "15.5.1-029"
            },
            {
              "status": "affected",
              "version": "15.5.2-005"
            },
            {
              "status": "affected",
              "version": "16.0.0-195"
            },
            {
              "status": "affected",
              "version": "15.5.3-017"
            },
            {
              "status": "affected",
              "version": "16.0.1-010"
            },
            {
              "status": "affected",
              "version": "15.0.1-035"
            },
            {
              "status": "affected",
              "version": "16.0.2-088"
            },
            {
              "status": "affected",
              "version": "15.5.4-007"
            },
            {
              "status": "affected",
              "version": "15.0.2-007"
            },
            {
              "status": "affected",
              "version": "16.0.4-010"
            },
            {
              "status": "affected",
              "version": "16.0.3-016"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "As part of Cisco\u0027s ongoing commitment to proactive security and product quality, the Cisco Secure Email Gateway and Cisco Secure Email and Web Manager engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.\r\n\r\nThe vulnerabilities tracked by CVE-2026-76441 are related to issues with improper access control that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-284."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "Except as otherwise noted previously, the Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "cvssV3_1"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-284",
              "description": "Improper Access Control",
              "lang": "en",
              "type": "cwe"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-14T16:08:50.060Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "cisco-sa-hardening-esa-dfCrfXkm",
          "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-esa-dfCrfXkm"
        }
      ],
      "source": {
        "advisory": "cisco-sa-hardening-esa-dfCrfXkm",
        "defects": [
          "CSCwu56522"
        ],
        "discovery": "INTERNAL"
      },
      "title": "Cisco Secure Email Gateway Security Hardening Release"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2026-76441",
    "datePublished": "2026-09-14T16:08:50.060Z",
    "dateReserved": "2026-08-19T12:02:03.635Z",
    "dateUpdated": "2026-09-15T17:03:57.836Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.