CVE-2026-2812 (GCVE-0-2026-2812)

Vulnerability from cvelistv5 – Published: 2026-05-20 17:47 – Updated: 2026-05-20 19:30
VLAI
Title
Improper Authentication issue in ArcGIS Server
Summary
ArcGIS Server contains an improper authentication vulnerability in an undocumented administrative endpoint. An unauthenticated attacker could exploit this issue by sending a crafted request to the endpoint. Successful exploitation may result in disruption of the web-based browsing interface. This issue affects ArcGIS Server 12.0 and earlier.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-287 - Improper Authentication
Assigner
References
Impacted products
Vendor Product Version
Esri ArcGIS Server Affected: 11.1 , ≤ 12.0 (custom)
Create a notification for this product.
Date Public
2026-05-06 17:47
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-2812",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-20T19:30:27.592167Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-20T19:30:36.857Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Windows",
            "Linux"
          ],
          "product": "ArcGIS Server",
          "vendor": "Esri",
          "versions": [
            {
              "lessThanOrEqual": "12.0",
              "status": "affected",
              "version": "11.1",
              "versionType": "custom"
            }
          ]
        }
      ],
      "datePublic": "2026-05-06T17:47:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "ArcGIS Server contains an improper authentication vulnerability in an undocumented administrative endpoint. An unauthenticated attacker could exploit this issue by sending a crafted request to the endpoint. Successful exploitation may result in disruption of the web-based browsing interface. This issue affects ArcGIS Server 12.0 and earlier."
            }
          ],
          "value": "ArcGIS Server contains an improper authentication vulnerability in an undocumented administrative endpoint. An unauthenticated attacker could exploit this issue by sending a crafted request to the endpoint. Successful exploitation may result in disruption of the web-based browsing interface. This issue affects ArcGIS Server 12.0 and earlier."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-287",
              "description": "CWE-287 Improper Authentication",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-20T17:47:40.451Z",
        "orgId": "cedc17bb-4939-4f40-a1f4-30ae8af1094e",
        "shortName": "Esri"
      },
      "references": [
        {
          "url": "https://www.esri.com/arcgis-blog/products/trust-arcgis/administration/april2026_security_bulletin"
        }
      ],
      "source": {
        "defect": [
          "BUG-000182852"
        ],
        "discovery": "UNKNOWN"
      },
      "title": "Improper Authentication issue in ArcGIS Server",
      "x_generator": {
        "engine": "Vulnogram 0.1.0-dev"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "cedc17bb-4939-4f40-a1f4-30ae8af1094e",
    "assignerShortName": "Esri",
    "cveId": "CVE-2026-2812",
    "datePublished": "2026-05-20T17:47:40.451Z",
    "dateReserved": "2026-02-19T16:37:22.095Z",
    "dateUpdated": "2026-05-20T19:30:36.857Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-2812",
      "date": "2026-07-31",
      "epss": "0.0036",
      "percentile": "0.28682"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-2812\",\"sourceIdentifier\":\"psirt@esri.com\",\"published\":\"2026-05-20T20:16:36.930\",\"lastModified\":\"2026-07-23T12:10:00.110\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"ArcGIS Server contains an improper authentication vulnerability in an undocumented administrative endpoint. An unauthenticated attacker could exploit this issue by sending a crafted request to the endpoint. Successful exploitation may result in disruption of the web-based browsing interface. This issue affects ArcGIS Server 12.0 and earlier.\"},{\"lang\":\"es\",\"value\":\"ArcGIS Server contiene una vulnerabilidad de autenticaci\u00f3n impropia en un endpoint administrativo no documentado. Un atacante no autenticado podr\u00eda explotar este problema enviando una solicitud especialmente dise\u00f1ada al endpoint. La explotaci\u00f3n exitosa podr\u00eda resultar en la interrupci\u00f3n de la interfaz de navegaci\u00f3n basada en web. Este problema afecta a ArcGIS Server 12.0 y versiones anteriores.\"}],\"affected\":[{\"source\":\"psirt@esri.com\",\"affectedData\":[{\"vendor\":\"Esri\",\"product\":\"ArcGIS Server\",\"defaultStatus\":\"unaffected\",\"platforms\":[\"Windows\",\"Linux\"],\"versions\":[{\"version\":\"11.1\",\"lessThanOrEqual\":\"12.0\",\"versionType\":\"custom\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"psirt@esri.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-05-20T19:30:27.592167Z\",\"id\":\"CVE-2026-2812\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"yes\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"psirt@esri.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-287\"}]}],\"configurations\":[{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:esri:arcgis_server:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"11.1\",\"versionEndIncluding\":\"12.0\",\"matchCriteriaId\":\"330075C0-D0B5-40C9-B384-37764EB8D139\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"703AF700-7A70-47E2-BC3A-7FD03B3CA9C1\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A2572D17-1DE6-457B-99CC-64AFD54487EA\"}]}]}],\"references\":[{\"url\":\"https://www.esri.com/arcgis-blog/products/trust-arcgis/administration/april2026_security_bulletin\",\"source\":\"psirt@esri.com\",\"tags\":[\"Vendor Advisory\"]}]}}",
    "redhat_vex": {
      "current_release_date": "2026-06-05T19:29:47+00:00",
      "cve": "CVE-2026-2812",
      "id": "CVE-2026-2812",
      "initial_release_date": "2026-05-06T17:47:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "Improper Authentication issue in ArcGIS Server",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2812.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-2812\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-05-20T19:30:27.592167Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-05-20T19:30:33.045Z\"}}], \"cna\": {\"title\": \"Improper Authentication issue in ArcGIS Server\", \"source\": {\"defect\": [\"BUG-000182852\"], \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.3, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N\", \"integrityImpact\": \"LOW\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"Esri\", \"product\": \"ArcGIS Server\", \"versions\": [{\"status\": \"affected\", \"version\": \"11.1\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"12.0\"}], \"platforms\": [\"Windows\", \"Linux\"], \"defaultStatus\": \"unaffected\"}], \"datePublic\": \"2026-05-06T17:47:00.000Z\", \"references\": [{\"url\": \"https://www.esri.com/arcgis-blog/products/trust-arcgis/administration/april2026_security_bulletin\"}], \"x_generator\": {\"engine\": \"Vulnogram 0.1.0-dev\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"ArcGIS Server contains an improper authentication vulnerability in an undocumented administrative endpoint. An unauthenticated attacker could exploit this issue by sending a crafted request to the endpoint. Successful exploitation may result in disruption of the web-based browsing interface. This issue affects ArcGIS Server 12.0 and earlier.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"ArcGIS Server contains an improper authentication vulnerability in an undocumented administrative endpoint. An unauthenticated attacker could exploit this issue by sending a crafted request to the endpoint. Successful exploitation may result in disruption of the web-based browsing interface. This issue affects ArcGIS Server 12.0 and earlier.\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-287\", \"description\": \"CWE-287 Improper Authentication\"}]}], \"providerMetadata\": {\"orgId\": \"cedc17bb-4939-4f40-a1f4-30ae8af1094e\", \"shortName\": \"Esri\", \"dateUpdated\": \"2026-05-20T17:47:40.451Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-2812\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-20T19:30:36.857Z\", \"dateReserved\": \"2026-02-19T16:37:22.095Z\", \"assignerOrgId\": \"cedc17bb-4939-4f40-a1f4-30ae8af1094e\", \"datePublished\": \"2026-05-20T17:47:40.451Z\", \"assignerShortName\": \"Esri\"}",
      "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.