{
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      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-23759",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
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                "role": "CISA Coordinator",
                "timestamp": "2026-03-17T16:09:03.805747Z",
                "version": "2.0.3"
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        "providerMetadata": {
          "dateUpdated": "2026-03-17T16:09:08.925Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "IOLAN STS",
          "vendor": "Perle Systems",
          "versions": [
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              "lessThan": "6.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
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              "lessThan": "6.0",
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              "version": "0",
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      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Victor A. Morales, Senior Pentester Team Leader, GM Sectec, Corp."
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "Omar Crespo, Pentester, GM Sectec, Corp."
        },
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          "lang": "en",
          "type": "coordinator",
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          "lang": "en",
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              "value": "Perle IOLAN STS/SCS terminal server models with firmware versions prior to 6.0 allow authenticated OS command injection via the restricted shell accessed over Telnet or SSH. The shell \u0027ps\u0027 command does not perform proper argument sanitization and passes user-supplied parameters into an \u0027sh -c\u0027 invocation running as root. An authenticated attacker who can log in to the device can inject shell metacharacters after the \u0027ps\u0027 subcommand to execute arbitrary OS commands with root privileges, leading to full compromise of the underlying operating system."
            }
          ],
          "value": "Perle IOLAN STS/SCS terminal server models with firmware versions prior to 6.0 allow authenticated OS command injection via the restricted shell accessed over Telnet or SSH. The shell \u0027ps\u0027 command does not perform proper argument sanitization and passes user-supplied parameters into an \u0027sh -c\u0027 invocation running as root. An authenticated attacker who can log in to the device can inject shell metacharacters after the \u0027ps\u0027 subcommand to execute arbitrary OS commands with root privileges, leading to full compromise of the underlying operating system."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "HIGH",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
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          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
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        },
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          "cvssV3_1": {
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            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
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              "lang": "en",
              "value": "GENERAL"
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      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-78",
              "description": "CWE-78 Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-17T15:20:34.202Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
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      "references": [
        {
          "tags": [
            "product"
          ],
          "url": "https://www.perle.com/downloads/server_sds_sts_rackmount.shtml"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://www.perle.com/support_services/documentation_pdfs/iolan_scs-sds-sts_ug.pdf"
        },
        {
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/perle-iolan-sts-scs-authenticated-command-injection-via-shell-ps"
        }
      ],
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          "lang": "en",
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              "type": "text/html",
              "value": "\u003cspan\u003eThe vendor has stated that the IOLAN SCG and SCR models do not contain this vulnerable functionality.\u003c/span\u003e\u003cbr\u003e"
            }
          ],
          "value": "The vendor has stated that the IOLAN SCG and SCR models do not contain this vulnerable functionality."
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Perle IOLAN STS/SCS Authenticated Command Injection via \u0027shell ps\u0027",
      "x_generator": {
        "engine": "Vulnogram 0.5.0"
      }
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  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-23759",
    "datePublished": "2026-03-17T15:20:10.743Z",
    "dateReserved": "2026-01-15T18:42:20.938Z",
    "dateUpdated": "2026-03-17T16:09:08.925Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2"
}