CVE-2026-20240 (GCVE-0-2026-20240)

Vulnerability from cvelistv5 – Published: 2026-05-20 16:32 – Updated: 2026-05-20 17:47
VLAI
Title
Denial of Service through coldToFrozen.sh Script in Splunk Enterprise
Summary
In Splunk Enterprise versions below 10.2.2, 10.0.5, 9.4.11, and 9.3.12, and Splunk Cloud Platform versions below 10.4.2603.1, 10.3.2512.9, 10.2.2510.11, 10.1.2507.21, 10.0.2503.13, and 9.3.2411.129, a low-privileged user that does not hold the ‘admin’ or ‘power’ Splunk roles could cause a Denial of Service by exploiting the `coldToFrozen.sh` script in the `splunk_archiver` app to rename critical Splunk directories, making the instance non-functional.<br><br>The Denial of Service is possible because of missing input validation in the `coldToFrozen.sh` script, which accepts arbitrary file paths and renames them without restricting operations to safe directories.
Severity
7.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-20 - The product does not validate or incorrectly validates input that can affect the control flow or data flow of a program.
Assigner
References
Impacted products
Vendor Product Version
Splunk Splunk Enterprise Affected: 10.2 , < 10.2.2 (custom)
Affected: 10.0 , < 10.0.5 (custom)
Affected: 9.4 , < 9.4.11 (custom)
Affected: 9.3 , < 9.3.12 (custom)
Create a notification for this product.
Splunk Splunk Cloud Platform Affected: 10.4.2603 , < 10.4.2603.1 (custom)
Affected: 10.3.2512 , < 10.3.2512.9 (custom)
Affected: 10.2.2510 , < 10.2.2510.11 (custom)
Affected: 10.1.2507 , < 10.1.2507.21 (custom)
Affected: 10.0.2503 , < 10.0.2503.13 (custom)
Affected: 9.3.2411 , < 9.3.2411.129 (custom)
Create a notification for this product.
Date Public
2026-05-20 00:00
Credits
Alex Hordijk (hordalex)
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-20240",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-20T17:47:29.920729Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-20T17:47:46.372Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Splunk Enterprise",
          "vendor": "Splunk",
          "versions": [
            {
              "lessThan": "10.2.2",
              "status": "affected",
              "version": "10.2",
              "versionType": "custom"
            },
            {
              "lessThan": "10.0.5",
              "status": "affected",
              "version": "10.0",
              "versionType": "custom"
            },
            {
              "lessThan": "9.4.11",
              "status": "affected",
              "version": "9.4",
              "versionType": "custom"
            },
            {
              "lessThan": "9.3.12",
              "status": "affected",
              "version": "9.3",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Splunk Cloud Platform",
          "vendor": "Splunk",
          "versions": [
            {
              "lessThan": "10.4.2603.1",
              "status": "affected",
              "version": "10.4.2603",
              "versionType": "custom"
            },
            {
              "lessThan": "10.3.2512.9",
              "status": "affected",
              "version": "10.3.2512",
              "versionType": "custom"
            },
            {
              "lessThan": "10.2.2510.11",
              "status": "affected",
              "version": "10.2.2510",
              "versionType": "custom"
            },
            {
              "lessThan": "10.1.2507.21",
              "status": "affected",
              "version": "10.1.2507",
              "versionType": "custom"
            },
            {
              "lessThan": "10.0.2503.13",
              "status": "affected",
              "version": "10.0.2503",
              "versionType": "custom"
            },
            {
              "lessThan": "9.3.2411.129",
              "status": "affected",
              "version": "9.3.2411",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Alex Hordijk (hordalex)"
        }
      ],
      "datePublic": "2026-05-20T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "In Splunk Enterprise versions below 10.2.2, 10.0.5, 9.4.11, and 9.3.12, and Splunk Cloud Platform versions below 10.4.2603.1, 10.3.2512.9, 10.2.2510.11, 10.1.2507.21, 10.0.2503.13, and 9.3.2411.129, a low-privileged user that does not hold the \u2018admin\u2019 or \u2018power\u2019 Splunk roles could cause a Denial of Service by exploiting the `coldToFrozen.sh` script in the `splunk_archiver` app to rename critical Splunk directories, making the instance non-functional.\u003cbr\u003e\u003cbr\u003eThe Denial of Service is possible because of missing input validation in the `coldToFrozen.sh` script, which accepts arbitrary file paths and renames them without restricting operations to safe directories."
            }
          ],
          "value": "In Splunk Enterprise versions below 10.2.2, 10.0.5, 9.4.11, and 9.3.12, and Splunk Cloud Platform versions below 10.4.2603.1, 10.3.2512.9, 10.2.2510.11, 10.1.2507.21, 10.0.2503.13, and 9.3.2411.129, a low-privileged user that does not hold the \u2018admin\u2019 or \u2018power\u2019 Splunk roles could cause a Denial of Service by exploiting the `coldToFrozen.sh` script in the `splunk_archiver` app to rename critical Splunk directories, making the instance non-functional.\u003cbr\u003e\u003cbr\u003eThe Denial of Service is possible because of missing input validation in the `coldToFrozen.sh` script, which accepts arbitrary file paths and renames them without restricting operations to safe directories."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "The product does not validate or incorrectly validates input that can affect the control flow or data flow of a program.",
              "lang": "en",
              "type": "cwe"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-20T16:32:05.687Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "url": "https://advisory.splunk.com/advisories/SVD-2026-0504"
        }
      ],
      "source": {
        "advisory": "SVD-2026-0504"
      },
      "title": "Denial of Service through coldToFrozen.sh Script in Splunk Enterprise"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2026-20240",
    "datePublished": "2026-05-20T16:32:05.687Z",
    "dateReserved": "2025-10-08T11:59:15.400Z",
    "dateUpdated": "2026-05-20T17:47:46.372Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-20240",
      "date": "2026-06-18",
      "epss": "0.00383",
      "percentile": "0.29957"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-20240\",\"sourceIdentifier\":\"psirt@cisco.com\",\"published\":\"2026-05-20T18:16:26.637\",\"lastModified\":\"2026-05-21T19:40:59.380\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In Splunk Enterprise versions below 10.2.2, 10.0.5, 9.4.11, and 9.3.12, and Splunk Cloud Platform versions below 10.4.2603.1, 10.3.2512.9, 10.2.2510.11, 10.1.2507.21, 10.0.2503.13, and 9.3.2411.129, a low-privileged user that does not hold the \u2018admin\u2019 or \u2018power\u2019 Splunk roles could cause a Denial of Service by exploiting the `coldToFrozen.sh` script in the `splunk_archiver` app to rename critical Splunk directories, making the instance non-functional.\u003cbr\u003e\u003cbr\u003eThe Denial of Service is possible because of missing input validation in the `coldToFrozen.sh` script, which accepts arbitrary file paths and renames them without restricting operations to safe directories.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"psirt@cisco.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"psirt@cisco.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-20\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*\",\"versionStartIncluding\":\"9.3.0\",\"versionEndExcluding\":\"9.3.12\",\"matchCriteriaId\":\"22F3493D-997F-40A9-A5A9-4B4250603E8B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*\",\"versionStartIncluding\":\"9.4.0\",\"versionEndExcluding\":\"9.4.11\",\"matchCriteriaId\":\"41BB20C9-CF42-4222-8664-74104A2D98E6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*\",\"versionStartIncluding\":\"10.0.0\",\"versionEndExcluding\":\"10.0.5\",\"matchCriteriaId\":\"D5A01879-50A5-4266-A08C-F55584F442ED\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*\",\"versionStartIncluding\":\"10.2.0\",\"versionEndExcluding\":\"10.2.2\",\"matchCriteriaId\":\"9F3A147D-2A67-469A-A223-248DEFB413E0\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"9.3.2411\",\"versionEndExcluding\":\"9.3.2411.129\",\"matchCriteriaId\":\"ED26E5C7-F23C-4FB8-9B9C-509987065586\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"10.0.2503\",\"versionEndExcluding\":\"10.0.2503.13\",\"matchCriteriaId\":\"D5C098C2-9ED5-41B4-BE57-984B71027144\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"10.1.2507\",\"versionEndExcluding\":\"10.1.2507.21\",\"matchCriteriaId\":\"2C302734-E81B-49DE-B3D6-ACD20DD3A57A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"10.2.2510\",\"versionEndExcluding\":\"10.2.2510.11\",\"matchCriteriaId\":\"5F7423BE-EADA-4D07-A021-D0F9EBBF966F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"10.3.2512\",\"versionEndExcluding\":\"10.3.2512.9\",\"matchCriteriaId\":\"BECCFE49-3763-435F-B5E2-26A7546E17CB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:splunk:splunk_cloud_platform:10.4.2603:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"C405F2EE-1E1E-45EA-ACB4-E5F5AE4811EB\"}]}]}],\"references\":[{\"url\":\"https://advisory.splunk.com/advisories/SVD-2026-0504\",\"source\":\"psirt@cisco.com\",\"tags\":[\"Vendor Advisory\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-20240\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-05-20T17:47:29.920729Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-05-20T17:47:37.105Z\"}}], \"cna\": {\"title\": \"Denial of Service through coldToFrozen.sh Script in Splunk Enterprise\", \"source\": {\"advisory\": \"SVD-2026-0504\"}, \"credits\": [{\"lang\": \"en\", \"value\": \"Alex Hordijk (hordalex)\"}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 7.1, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"Splunk\", \"product\": \"Splunk Enterprise\", \"versions\": [{\"status\": \"affected\", \"version\": \"10.2\", \"lessThan\": \"10.2.2\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"10.0\", \"lessThan\": \"10.0.5\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"9.4\", \"lessThan\": \"9.4.11\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"9.3\", \"lessThan\": \"9.3.12\", \"versionType\": \"custom\"}]}, {\"vendor\": \"Splunk\", \"product\": \"Splunk Cloud Platform\", \"versions\": [{\"status\": \"affected\", \"version\": \"10.4.2603\", \"lessThan\": \"10.4.2603.1\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"10.3.2512\", \"lessThan\": \"10.3.2512.9\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"10.2.2510\", \"lessThan\": \"10.2.2510.11\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"10.1.2507\", \"lessThan\": \"10.1.2507.21\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"10.0.2503\", \"lessThan\": \"10.0.2503.13\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"9.3.2411\", \"lessThan\": \"9.3.2411.129\", \"versionType\": \"custom\"}]}], \"datePublic\": \"2026-05-20T00:00:00.000Z\", \"references\": [{\"url\": \"https://advisory.splunk.com/advisories/SVD-2026-0504\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"In Splunk Enterprise versions below 10.2.2, 10.0.5, 9.4.11, and 9.3.12, and Splunk Cloud Platform versions below 10.4.2603.1, 10.3.2512.9, 10.2.2510.11, 10.1.2507.21, 10.0.2503.13, and 9.3.2411.129, a low-privileged user that does not hold the \\u2018admin\\u2019 or \\u2018power\\u2019 Splunk roles could cause a Denial of Service by exploiting the `coldToFrozen.sh` script in the `splunk_archiver` app to rename critical Splunk directories, making the instance non-functional.\u003cbr\u003e\u003cbr\u003eThe Denial of Service is possible because of missing input validation in the `coldToFrozen.sh` script, which accepts arbitrary file paths and renames them without restricting operations to safe directories.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"In Splunk Enterprise versions below 10.2.2, 10.0.5, 9.4.11, and 9.3.12, and Splunk Cloud Platform versions below 10.4.2603.1, 10.3.2512.9, 10.2.2510.11, 10.1.2507.21, 10.0.2503.13, and 9.3.2411.129, a low-privileged user that does not hold the \\u2018admin\\u2019 or \\u2018power\\u2019 Splunk roles could cause a Denial of Service by exploiting the `coldToFrozen.sh` script in the `splunk_archiver` app to rename critical Splunk directories, making the instance non-functional.\u003cbr\u003e\u003cbr\u003eThe Denial of Service is possible because of missing input validation in the `coldToFrozen.sh` script, which accepts arbitrary file paths and renames them without restricting operations to safe directories.\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"cwe\", \"cweId\": \"CWE-20\", \"description\": \"The product does not validate or incorrectly validates input that can affect the control flow or data flow of a program.\"}]}], \"providerMetadata\": {\"orgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"shortName\": \"cisco\", \"dateUpdated\": \"2026-05-20T16:32:05.687Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-20240\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-20T17:47:46.372Z\", \"dateReserved\": \"2025-10-08T11:59:15.400Z\", \"assignerOrgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"datePublished\": \"2026-05-20T16:32:05.687Z\", \"assignerShortName\": \"cisco\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.