Vulnerability-Lookup

CVE-2026-76434 (GCVE-0-2026-76434)

Vulnerability from cvelistv5 – Published: 2026-09-16 20:19 – Updated: 2026-09-17 16:00

Title

Cisco Identity Services Engine Arbitrary File Read Vulnerability

Summary

A vulnerability in the certificate import functionality of the web-based management interface of Cisco ISE and Cisco ISE-PIC could allow an authenticated, remote attacker to read arbitrary files from the affected system. To exploit this vulnerability, the attacker must have valid administrative credentials. This vulnerability is due to insufficient validation of user-supplied input by the affected feature. An attacker could exploit this vulnerability by sending a crafted request to the web-based management interface of an affected device. A successful exploit could allow the attacker to read arbitrary files from the affected device, which could contain sensitive information.

Severity

4.9 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-17 16:00 UTC

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

cisco CNA under the mitre root

CNA scorecard C 66/100 over 443 records in the last 180 days details

References

1 reference

URL	Tags
https://sec.cloudapps.cisco.com/security/center/c…

Impacted products

2 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	guessed
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

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}

CISCO-SA-ISE-MULTI-TRAVERSAL-WDTGYCDN

Vulnerability from csaf_cisco - Published: 2026-09-16 16:00 - Updated: 2026-09-16 16:00

Summary

Cisco Identity Services Engine Multiple Path Traversal Vulnerabilities

Scope

4 vulnerabilities in this advisory, including CVE-2026-76434.

CVE-2026-76434

4.9 (Medium)


                
                  CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Known affected: 52 products

https://software.cisco.com

Open the full advisory

FKIE_CVE-2026-76434

Vulnerability from fkie_nvd - Published: 2026-09-16 21:17 - Updated: 2026-09-28 13:14

Severity

4.9 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Summary

References

	URL	Tags
	psirt@cisco.com	https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-multi-traversal-WDTgYCdn	Vendor Advisory

Impacted products

Vendor	Product	Version
cisco	identity_services_engine	*
cisco	identity_services_engine	3.3.0
cisco	identity_services_engine	3.3.0
cisco	identity_services_engine	3.3.0
cisco	identity_services_engine	3.3.0
cisco	identity_services_engine	3.3.0
cisco	identity_services_engine	3.3.0
cisco	identity_services_engine	3.3.0
cisco	identity_services_engine	3.3.0
cisco	identity_services_engine	3.3.0
cisco	identity_services_engine	3.3.0
cisco	identity_services_engine	3.3.0
cisco	identity_services_engine	3.4.0
cisco	identity_services_engine	3.4.0
cisco	identity_services_engine	3.4.0
cisco	identity_services_engine	3.4.0
cisco	identity_services_engine	3.4.0
cisco	identity_services_engine	3.4.0
cisco	identity_services_engine	3.4.0
cisco	identity_services_engine	3.5.0
cisco	identity_services_engine	3.5.0
cisco	identity_services_engine	3.5.0
cisco	identity_services_engine	3.5.0
cisco	identity_services_engine_passive_identity_connector	*
cisco	identity_services_engine_passive_identity_connector	3.3.0
cisco	identity_services_engine_passive_identity_connector	3.3.0
cisco	identity_services_engine_passive_identity_connector	3.3.0
cisco	identity_services_engine_passive_identity_connector	3.3.0
cisco	identity_services_engine_passive_identity_connector	3.3.0
cisco	identity_services_engine_passive_identity_connector	3.3.0
cisco	identity_services_engine_passive_identity_connector	3.3.0
cisco	identity_services_engine_passive_identity_connector	3.3.0
cisco	identity_services_engine_passive_identity_connector	3.3.0
cisco	identity_services_engine_passive_identity_connector	3.3.0
cisco	identity_services_engine_passive_identity_connector	3.3.0
cisco	identity_services_engine_passive_identity_connector	3.4.0
cisco	identity_services_engine_passive_identity_connector	3.4.0
cisco	identity_services_engine_passive_identity_connector	3.4.0
cisco	identity_services_engine_passive_identity_connector	3.4.0
cisco	identity_services_engine_passive_identity_connector	3.4.0
cisco	identity_services_engine_passive_identity_connector	3.4.0
cisco	identity_services_engine_passive_identity_connector	3.4.0

JSON

To clipboard

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    }
  ],
  "id": "CVE-2026-76434",
  "lastModified": "2026-09-28T13:14:16.233",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
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    }
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      ],
      "source": "psirt@cisco.com",
      "type": "Secondary"
    }
  ]
}

GHSA-2WHP-8F85-4CQH

Vulnerability from github – Published: 2026-09-16 21:32 – Updated: 2026-09-16 21:32

Details

This vulnerability is due to insufficient validation of user-supplied input by the affected feature. An attacker could exploit this vulnerability by sending a crafted request to the web-based management interface of an affected device. A successful exploit could allow the attacker to read arbitrary files from the affected device, which could contain sensitive information.

Severity

4.9 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-76434"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-16T21:17:15Z",
    "severity": "MODERATE"
  },
  "details": "A vulnerability in the certificate import functionality of the web-based management interface of Cisco ISE and Cisco ISE-PIC could allow an authenticated, remote attacker to read arbitrary files from the affected system. To exploit this vulnerability, the attacker must have valid administrative credentials.\n\nThis vulnerability is due to insufficient validation of user-supplied input by the affected feature. An attacker could exploit this vulnerability by sending a crafted request to the web-based management interface of an affected device. A successful exploit could allow the attacker to read arbitrary files from the affected device, which could contain sensitive information.",
  "id": "GHSA-2whp-8f85-4cqh",
  "modified": "2026-09-16T21:32:51Z",
  "published": "2026-09-16T21:32:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-76434"
    },
    {
      "type": "WEB",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-multi-traversal-WDTgYCdn"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.

Action not permitted

CVE-2026-76434 (GCVE-0-2026-76434)

CISCO-SA-ISE-MULTI-TRAVERSAL-WDTGYCDN

FKIE_CVE-2026-76434

GHSA-2WHP-8F85-4CQH

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Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour