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Cisco ISE CVE-2026-76427

| EUVDEUVD-2026-81015 MEDIUM
Improper Restriction of XML External Entity Reference (CWE-611)
2026-09-16 cisco GHSA-46xj-2h8f-mw97
4.9
CVSS 3.1 · NVD
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Severity by source

Vendor (cisco) PRIMARY
MEDIUM
qualitative
NVD
4.9 MEDIUM
AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
vuln.today AI
4.9 MEDIUM

Remote administrative upload path (AV:N, AC:L), but valid admin credentials required (PR:H); XXE yields file read and SSRF, so confidentiality-only C:H with I:N/A:N and no scope change.

3.1 AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (cisco).

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

2
Analysis Generated
Sep 16, 2026 - 22:21 vuln.today
CVE Published
Sep 16, 2026 - 20:24 nvd
MEDIUM 4.9

DescriptionNVD

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.

AnalysisAI

XML external entity (XXE) injection in the offline profiler feed service of Cisco Identity Services Engine (ISE) allows an authenticated remote administrator to read arbitrary files from the appliance and to use it as a pivot for requests to internal systems. The flaw affects ISE and ISE Passive Identity Connector releases across the 3.1 through 3.5 trains, and exploitation requires high-privilege administrative credentials (CVSS 3.1 vector AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N, score 4.9) plus the ability to upload a crafted offline feed package through the administrative interface. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation Requires valid Cisco ISE administrative credentials (PR:H) and the ability to upload a crafted offline profiler feed package through the administrative interface. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment This is a genuine but bounded issue, correctly rated Medium (CVSS 4.9). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Apply the fixed software release identified for your ISE and ISE Passive Identity Connector train in Cisco's advisory (cisco-sa-ise-multi-hrP9jQSQ, https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-multi-hrP9jQSQ), and use https://nvd.nist.gov/vuln/detail/CVE-2026-76427 to confirm the affected/fixed version mapping; no public exploit exists, so planned maintenance windows are reasonable, though the flaw should not be left indefinitely. … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-76427 vulnerability details – vuln.today

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