{
  "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-2023-0811",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-0811",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2023-03-16T17:41:25.525Z",
    "updatedAt": "2025-01-16T21:42:32.824Z",
    "importedAt": "2026-10-24T01:56:49.724Z",
    "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": null,
      "summary": "\nOmron CJ1M unit v4.0 and prior has improper access controls on the memory region where the UM password is stored. If an adversary issues a PROGRAM AREA WRITE command to a specific memory region, they could overwrite the password. This may lead to disabling UM protections or setting a non-ASCII password (non-keyboard characters) and preventing an engineer from viewing or modifying the user program. \n\n",
      "affected": [
        {
          "vendor": "Omron ",
          "product": "CJ1M SYSMAC CJ-series",
          "packageName": "CJ2H-CPU6 □ -EIP",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "All versions ",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Omron",
          "product": "CJ1M SYSMAC CJ-series",
          "packageName": "CJ2H-CPU6 □",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "All versions ",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Omron",
          "product": "CJ1M SYSMAC CJ-series",
          "packageName": "CJ2M-CPU □ □",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "All versions ",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Omron",
          "product": "CJ1M SYSMAC CJ-series",
          "packageName": "CJ1G-CPU □ □ P",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "All versions ",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Omron ",
          "product": "CJ1M SYSMAC CS-series ",
          "packageName": "CS1H-CPU □ □ H",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "All versions ",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Omron ",
          "product": "CJ1M SYSMAC CS-series ",
          "packageName": "CS1G-CPU □ □ H",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "All versions ",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Omron ",
          "product": "CJ1M SYSMAC CS-series ",
          "packageName": "CS1D-CPU □ □ HA",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "All versions ",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Omron ",
          "product": "CJ1M SYSMAC CS-series ",
          "packageName": "CS1D-CPU □ □ H",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "All versions ",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Omron",
          "product": "CJ1M SYSMAC CS-series ",
          "packageName": "CS1D-CPU □ □ SA",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "All versions ",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Omron ",
          "product": "CJ1M SYSMAC CS-series ",
          "packageName": "CS1D-CPU □ □ S",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "All versions ",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Omron ",
          "product": "CJ1M SYSMAC CS-series ",
          "packageName": "CS1D-CPU □ □ P",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "All versions ",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Omron",
          "product": "CJ1M SYSMAC CP-series",
          "packageName": "CP2E-E □ □ D □ - □",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "All versions ",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Omron",
          "product": "CJ1M SYSMAC CP-series",
          "packageName": "CP2E-S □ □ D □- □",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "All versions ",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Omron",
          "product": "CJ1M SYSMAC CP-series",
          "packageName": "CP2E-N □ □ D □ - □",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "All versions ",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Omron",
          "product": "CJ1M SYSMAC CP-series",
          "packageName": "CP1H-X40D □ - □",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "All versions ",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Omron",
          "product": "CJ1M SYSMAC CP-series",
          "packageName": "CP1H-XA40D □ - □",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "All versions ",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Omron",
          "product": "CJ1M SYSMAC CP-series",
          "packageName": "CP1H-Y20DT-D",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "All versions ",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Omron",
          "product": "CJ1M SYSMAC CP-series",
          "packageName": "CP1L-EL20D □ - □",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "All versions ",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Omron",
          "product": "CJ1M SYSMAC CP-series",
          "packageName": "CP1L-EM □ □ D □ - □",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "All versions ",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Omron",
          "product": "CJ1M SYSMAC CP-series",
          "packageName": "CP1L-L □ □ D □- □",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "All versions ",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Omron",
          "product": "CJ1M SYSMAC CP-series",
          "packageName": "CP1L-M □ □ D □ - □",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "All versions ",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Omron",
          "product": "CJ1M SYSMAC CP-series",
          "packageName": "CP1E-E □ □ D □ - □",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "All versions ",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Omron",
          "product": "CJ1M SYSMAC CP-series",
          "packageName": "CP1E-NA □ □ D □ - □",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "All versions ",
              "status": "affected"
            }
          ]
        }
      ]
    }
  }
}