{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-20353",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-20353",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-14T16:08:50.062Z",
    "updatedAt": "2026-09-15T17:03:57.940Z",
    "importedAt": "2026-10-24T01:57:55.771Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "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.\r\n\r\nThe vulnerabilities tracked by CVE-2026-20353 are related to issues with improper control of a resource through its lifetime that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-664.",
      "affected": [
        {
          "vendor": "Cisco",
          "product": "Cisco Secure Email",
          "defaultStatus": "unknown",
          "versions": [
            {
              "version": "14.0.0-698",
              "status": "affected"
            },
            {
              "version": "13.5.1-277",
              "status": "affected"
            },
            {
              "version": "13.0.0-392",
              "status": "affected"
            },
            {
              "version": "14.2.0-620",
              "status": "affected"
            },
            {
              "version": "13.0.5-007",
              "status": "affected"
            },
            {
              "version": "13.5.4-038",
              "status": "affected"
            },
            {
              "version": "14.2.1-020",
              "status": "affected"
            },
            {
              "version": "14.3.0-032",
              "status": "affected"
            },
            {
              "version": "15.0.0-104",
              "status": "affected"
            },
            {
              "version": "15.0.1-030",
              "status": "affected"
            },
            {
              "version": "15.5.0-048",
              "status": "affected"
            },
            {
              "version": "15.5.1-055",
              "status": "affected"
            },
            {
              "version": "15.5.2-018",
              "status": "affected"
            },
            {
              "version": "16.0.0-050",
              "status": "affected"
            },
            {
              "version": "15.0.3-002",
              "status": "affected"
            },
            {
              "version": "16.0.0-054",
              "status": "affected"
            },
            {
              "version": "15.5.3-022",
              "status": "affected"
            },
            {
              "version": "16.0.1-017",
              "status": "affected"
            },
            {
              "version": "15.5.4-012",
              "status": "affected"
            },
            {
              "version": "16.0.4-016",
              "status": "affected"
            },
            {
              "version": "15.0.5-016",
              "status": "affected"
            },
            {
              "version": "16.0.2-112",
              "status": "affected"
            },
            {
              "version": "16.0.3-044",
              "status": "affected"
            }
          ]
        }
      ]
    }
  }
}