GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2026-76427 (GCVE-0-2026-76427)

Vulnerability from cvelistv5 – Published: 2026-09-16 20:24 – Updated: 2026-09-16 20:24
VLAI
Title
Cisco ISE XML External Entity Injection Vulnerability
Summary
A vulnerability in the offline profiler feed service of Cisco ISE could allow an authenticated, remote attacker to read arbitrary files that are stored on an affected device. This vulnerability is due to the parsing of attacker-controlled feed metadata with an XML parser that does not disable external entity resolution. An attacker could exploit this vulnerability by uploading a crafted offline feed package through the administrative interface. A successful exploit could allow the attacker to read arbitrary files from the file system and issue requests to internal systems from the affected device. To exploit this vulnerability, the attacker must have valid administrative credentials.
CWE
  • CWE-611 - Improper Restriction of XML External Entity Reference
Impacted products
Vendor Product Version CPE status
Cisco Cisco Identity Services Engine Software Affected: 3.1.0
Affected: 3.1.0 p1
Affected: 3.1.0 p3
Affected: 3.1.0 p2
Affected: 3.2.0
Affected: 3.1.0 p4
Affected: 3.1.0 p5
Affected: 3.2.0 p1
Affected: 3.1.0 p6
Affected: 3.2.0 p2
Affected: 3.1.0 p7
Affected: 3.3.0
Affected: 3.2.0 p3
Affected: 3.2.0 p4
Affected: 3.1.0 p8
Affected: 3.2.0 p5
Affected: 3.2.0 p6
Affected: 3.1.0 p9
Affected: 3.3 Patch 2
Affected: 3.3 Patch 1
Affected: 3.3 Patch 3
Affected: 3.4.0
Affected: 3.2.0 p7
Affected: 3.3 Patch 4
Affected: 3.4 Patch 1
Affected: 3.1.0 p10
Affected: 3.3 Patch 5
Affected: 3.3 Patch 6
Affected: 3.4 Patch 2
Affected: 3.3 Patch 7
Affected: 3.4 Patch 3
Affected: 3.5.0
Affected: 3.4 Patch 4
Affected: 3.3 Patch 8
Affected: 3.2 Patch 8
Affected: 3.5 Patch 1
Affected: 3.3 Patch 9
Affected: 3.2 Patch 9
Affected: 3.4 Patch 5
Affected: 3.5 Patch 3
Affected: 3.5 Patch 2
Affected: 3.3 Patch 10
Affected: 3.3 Patch 11
Affected: 3.4 Patch 6
Affected: 3.2 Patch 10
Affected: 3.1.0 p72
Affected: 3.1.0 p11
Affected: 3.3 Patch 12
guessed Create a notification for this product.
Cisco Cisco ISE Passive Identity Connector Affected: 3.2.0
Affected: 3.1.0
Affected: 3.3.0
Affected: 3.4.0
Affected: 3.5.0
guessed Create a notification for this product.
Show details on NVD website

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "Cisco Identity Services Engine Software",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "3.1.0"
            },
            {
              "status": "affected",
              "version": "3.1.0 p1"
            },
            {
              "status": "affected",
              "version": "3.1.0 p3"
            },
            {
              "status": "affected",
              "version": "3.1.0 p2"
            },
            {
              "status": "affected",
              "version": "3.2.0"
            },
            {
              "status": "affected",
              "version": "3.1.0 p4"
            },
            {
              "status": "affected",
              "version": "3.1.0 p5"
            },
            {
              "status": "affected",
              "version": "3.2.0 p1"
            },
            {
              "status": "affected",
              "version": "3.1.0 p6"
            },
            {
              "status": "affected",
              "version": "3.2.0 p2"
            },
            {
              "status": "affected",
              "version": "3.1.0 p7"
            },
            {
              "status": "affected",
              "version": "3.3.0"
            },
            {
              "status": "affected",
              "version": "3.2.0 p3"
            },
            {
              "status": "affected",
              "version": "3.2.0 p4"
            },
            {
              "status": "affected",
              "version": "3.1.0 p8"
            },
            {
              "status": "affected",
              "version": "3.2.0 p5"
            },
            {
              "status": "affected",
              "version": "3.2.0 p6"
            },
            {
              "status": "affected",
              "version": "3.1.0 p9"
            },
            {
              "status": "affected",
              "version": "3.3 Patch 2"
            },
            {
              "status": "affected",
              "version": "3.3 Patch 1"
            },
            {
              "status": "affected",
              "version": "3.3 Patch 3"
            },
            {
              "status": "affected",
              "version": "3.4.0"
            },
            {
              "status": "affected",
              "version": "3.2.0 p7"
            },
            {
              "status": "affected",
              "version": "3.3 Patch 4"
            },
            {
              "status": "affected",
              "version": "3.4 Patch 1"
            },
            {
              "status": "affected",
              "version": "3.1.0 p10"
            },
            {
              "status": "affected",
              "version": "3.3 Patch 5"
            },
            {
              "status": "affected",
              "version": "3.3 Patch 6"
            },
            {
              "status": "affected",
              "version": "3.4 Patch 2"
            },
            {
              "status": "affected",
              "version": "3.3 Patch 7"
            },
            {
              "status": "affected",
              "version": "3.4 Patch 3"
            },
            {
              "status": "affected",
              "version": "3.5.0"
            },
            {
              "status": "affected",
              "version": "3.4 Patch 4"
            },
            {
              "status": "affected",
              "version": "3.3 Patch 8"
            },
            {
              "status": "affected",
              "version": "3.2 Patch 8"
            },
            {
              "status": "affected",
              "version": "3.5 Patch 1"
            },
            {
              "status": "affected",
              "version": "3.3 Patch 9"
            },
            {
              "status": "affected",
              "version": "3.2 Patch 9"
            },
            {
              "status": "affected",
              "version": "3.4 Patch 5"
            },
            {
              "status": "affected",
              "version": "3.5 Patch 3"
            },
            {
              "status": "affected",
              "version": "3.5 Patch 2"
            },
            {
              "status": "affected",
              "version": "3.3 Patch 10"
            },
            {
              "status": "affected",
              "version": "3.3 Patch 11"
            },
            {
              "status": "affected",
              "version": "3.4 Patch 6"
            },
            {
              "status": "affected",
              "version": "3.2 Patch 10"
            },
            {
              "status": "affected",
              "version": "3.1.0 p72"
            },
            {
              "status": "affected",
              "version": "3.1.0 p11"
            },
            {
              "status": "affected",
              "version": "3.3 Patch 12"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "Cisco ISE Passive Identity Connector",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "3.2.0"
            },
            {
              "status": "affected",
              "version": "3.1.0"
            },
            {
              "status": "affected",
              "version": "3.3.0"
            },
            {
              "status": "affected",
              "version": "3.4.0"
            },
            {
              "status": "affected",
              "version": "3.5.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in the offline profiler feed service of Cisco ISE could allow an authenticated, remote attacker to read arbitrary files that are stored on an affected device.\r\n\r\nThis vulnerability is due to the parsing of attacker-controlled feed metadata with an XML parser that does not disable external entity resolution. An attacker could exploit this vulnerability by uploading a crafted offline feed package through the administrative interface. A successful exploit could allow the attacker to read arbitrary files from the file system and issue requests to internal systems from the affected device. To exploit this vulnerability, the attacker must have valid administrative credentials."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "format": "cvssV3_1"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-611",
              "description": "Improper Restriction of XML External Entity Reference",
              "lang": "en",
              "type": "cwe"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-16T20:24:45.440Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "cisco-sa-ise-multi-hrP9jQSQ",
          "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-multi-hrP9jQSQ"
        }
      ],
      "source": {
        "advisory": "cisco-sa-ise-multi-hrP9jQSQ",
        "defects": [
          "CSCwu27428"
        ],
        "discovery": "INTERNAL"
      },
      "title": "Cisco ISE XML External Entity Injection Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2026-76427",
    "datePublished": "2026-09-16T20:24:45.440Z",
    "dateReserved": "2026-08-19T12:02:03.634Z",
    "dateUpdated": "2026-09-16T20:24:45.440Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-76427",
      "date": "2026-09-17",
      "epss": "0.00334",
      "percentile": "0.26714"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-76427\",\"sourceIdentifier\":\"psirt@cisco.com\",\"published\":\"2026-09-16T21:17:14.393\",\"lastModified\":\"2026-09-16T21:17:14.393\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A vulnerability in the offline profiler feed service of Cisco ISE could allow an authenticated, remote attacker to read arbitrary files that are stored on an affected device.\\r\\n\\r\\nThis vulnerability is due to the parsing of attacker-controlled feed metadata with an XML parser that does not disable external entity resolution. An attacker could exploit this vulnerability by uploading a crafted offline feed package through the administrative interface. A successful exploit could allow the attacker to read arbitrary files from the file system and issue requests to internal systems from the affected device. To exploit this vulnerability, the attacker must have valid administrative credentials.\"}],\"affected\":[{\"source\":\"psirt@cisco.com\",\"affectedData\":[{\"vendor\":\"Cisco\",\"product\":\"Cisco Identity Services Engine Software\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"3.1.0\",\"status\":\"affected\"},{\"version\":\"3.1.0 p1\",\"status\":\"affected\"},{\"version\":\"3.1.0 p3\",\"status\":\"affected\"},{\"version\":\"3.1.0 p2\",\"status\":\"affected\"},{\"version\":\"3.2.0\",\"status\":\"affected\"},{\"version\":\"3.1.0 p4\",\"status\":\"affected\"},{\"version\":\"3.1.0 p5\",\"status\":\"affected\"},{\"version\":\"3.2.0 p1\",\"status\":\"affected\"},{\"version\":\"3.1.0 p6\",\"status\":\"affected\"},{\"version\":\"3.2.0 p2\",\"status\":\"affected\"},{\"version\":\"3.1.0 p7\",\"status\":\"affected\"},{\"version\":\"3.3.0\",\"status\":\"affected\"},{\"version\":\"3.2.0 p3\",\"status\":\"affected\"},{\"version\":\"3.2.0 p4\",\"status\":\"affected\"},{\"version\":\"3.1.0 p8\",\"status\":\"affected\"},{\"version\":\"3.2.0 p5\",\"status\":\"affected\"},{\"version\":\"3.2.0 p6\",\"status\":\"affected\"},{\"version\":\"3.1.0 p9\",\"status\":\"affected\"},{\"version\":\"3.3 Patch 2\",\"status\":\"affected\"},{\"version\":\"3.3 Patch 1\",\"status\":\"affected\"},{\"version\":\"3.3 Patch 3\",\"status\":\"affected\"},{\"version\":\"3.4.0\",\"status\":\"affected\"},{\"version\":\"3.2.0 p7\",\"status\":\"affected\"},{\"version\":\"3.3 Patch 4\",\"status\":\"affected\"},{\"version\":\"3.4 Patch 1\",\"status\":\"affected\"},{\"version\":\"3.1.0 p10\",\"status\":\"affected\"},{\"version\":\"3.3 Patch 5\",\"status\":\"affected\"},{\"version\":\"3.3 Patch 6\",\"status\":\"affected\"},{\"version\":\"3.4 Patch 2\",\"status\":\"affected\"},{\"version\":\"3.3 Patch 7\",\"status\":\"affected\"},{\"version\":\"3.4 Patch 3\",\"status\":\"affected\"},{\"version\":\"3.5.0\",\"status\":\"affected\"},{\"version\":\"3.4 Patch 4\",\"status\":\"affected\"},{\"version\":\"3.3 Patch 8\",\"status\":\"affected\"},{\"version\":\"3.2 Patch 8\",\"status\":\"affected\"},{\"version\":\"3.5 Patch 1\",\"status\":\"affected\"},{\"version\":\"3.3 Patch 9\",\"status\":\"affected\"},{\"version\":\"3.2 Patch 9\",\"status\":\"affected\"},{\"version\":\"3.4 Patch 5\",\"status\":\"affected\"},{\"version\":\"3.5 Patch 3\",\"status\":\"affected\"},{\"version\":\"3.5 Patch 2\",\"status\":\"affected\"},{\"version\":\"3.3 Patch 10\",\"status\":\"affected\"},{\"version\":\"3.3 Patch 11\",\"status\":\"affected\"},{\"version\":\"3.4 Patch 6\",\"status\":\"affected\"},{\"version\":\"3.2 Patch 10\",\"status\":\"affected\"},{\"version\":\"3.1.0 p72\",\"status\":\"affected\"},{\"version\":\"3.1.0 p11\",\"status\":\"affected\"},{\"version\":\"3.3 Patch 12\",\"status\":\"affected\"}]},{\"vendor\":\"Cisco\",\"product\":\"Cisco ISE Passive Identity Connector\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"3.2.0\",\"status\":\"affected\"},{\"version\":\"3.1.0\",\"status\":\"affected\"},{\"version\":\"3.3.0\",\"status\":\"affected\"},{\"version\":\"3.4.0\",\"status\":\"affected\"},{\"version\":\"3.5.0\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"psirt@cisco.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":4.9,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.2,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"psirt@cisco.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-611\"}]}],\"references\":[{\"url\":\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-multi-hrP9jQSQ\",\"source\":\"psirt@cisco.com\"}]}}"
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

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.

Loading…

Detection rules are retrieved from Rulezet.

Loading…

Loading…

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


Loading…