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CVE-2023-20194

MEDIUM · CVSS 4.9EPSS 0.7%EU EUVD

A vulnerability in the ERS API of Cisco ISE could allow an authenticated, remote attacker to read arbitrary files on the underlying operating system of an affected device. To exploit this vulnerability, an attacker must have valid Administrator-level privileges on the affected device. This vulnerability is due to improper privilege management in the ERS API. An attacker could exploit this vulnerability by sending a crafted request to an affected device. A successful exploit could allow the attacker to elevate their privileges beyond the sphere of their intended access level, which would allow them to obtain sensitive information from the underlying operating system. Note: The ERS is not enabled by default. To verify the status of the ERS API in the Admin GUI, choose Administration > Settings > API Settings > API Service Settings.

Key facts

CVSS score
4.9 (v3.1)
Severity
MEDIUM
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE)
CWE-268
EPSS score
0.7% (53th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2023-24373)
Published
September 7, 2023
NVD last modified
June 17, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2023-24373 in the EU Vulnerability Database. Last updated in EUVD on October 23, 2024.

View on the EU Vulnerability Database

Affected products

  • cisco / identity services engine
  • cisco / identity services engine
  • cisco / identity services engine
  • cisco / identity services engine
  • cisco / identity services engine
  • cisco / identity services engine
  • cisco / identity services engine
  • cisco / identity services engine
  • cisco / identity services engine
  • cisco / identity services engine
  • cisco / identity services engine
  • cisco / identity services engine
  • cisco / identity services engine
  • cisco / identity services engine
  • cisco / identity services engine
  • cisco / identity services engine
  • cisco / identity services engine
  • cisco / identity services engine
  • cisco / identity services engine

Certified products that may be affected

2 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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