Medium severity · published Oct 21, 2021
CVE-2021-40123
A vulnerability in the web-based management interface of Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker with administrative read-only…
6.5
CVSS
0.8%
EPSS
No
On KEV
Description
A vulnerability in the web-based management interface of Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker with administrative read-only privileges to download files that should be restricted. This vulnerability is due to incorrect permissions settings on an affected device. An attacker could exploit this vulnerability by sending a crafted HTTP request to the device. A successful exploit could allow the attacker to download files that should be restricted.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 56% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IS
Identity Services Engine · Cisco
through 2.6; 2.6.0; 2.6.0; 2.6.0; 2.6.0; 2.6.0; +19 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-40123
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-40123
Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-file-download-B3BR5KQA
More from Identity Services Engine
10.0
CVE-2026-76460
Cisco Identity Services Engine Authentication Bypass Vulnerability
10.0
CVE-2025-20337
Cisco ISE API Unauthenticated Remote Code Execution Vulnerability
10.0
CVE-2025-20281
Cisco ISE API Unauthenticated Remote Code Execution Vulnerability
10.0
CVE-2026-20130
Cisco Identity Services Engine Hardening Release - Improper Neutralization Vulnerabilities
10.0
CVE-2026-20192
Cisco Identity Services Engine Hardening Release - Access Control Vulnerabilities
