CVE-2025-20125 | Cisco Identity Services Engine Insufficient Authorization Bypass Vulnerability

Exp

A vulnerability in an API of Cisco ISE could allow an authenticated, remote attacker with valid read-only credentials to obtain sensitive information, change node configurations, and restart the node. This vulnerability is due to a lack of authorization in a specific API and improper validation of user-supplied data. An attacker could exploit this vulnerability by sending a crafted HTTP request to a specific API on the device. A successful exploit could allow the attacker to attacker to obtain information, modify system configuration, and reload the device. Note: To successfully exploit this vulnerability, the attacker must have valid read-only administrative credentials. In a single-node deployment, new devices will not be able to authenticate during the reload time.

Published: 2025-02-05 Last update: 2025-03-28 Assigner: [email protected] Source: [email protected]

Conclusion & alert: CVE-2025-20125 is rated High Exploit Risk (90.1/100): CVSS Critical severity, with high exploitation likelihood (EPSS 14.50%, 96th percentile). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +12.38% over the last day, indicating growing attacker interest. Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2025-20125

EDB-ID Source Kind Published Link
52397 exploit_db edb 2025-08-11 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2025-20125

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 2.12% 14.50% +12.38%
2 2026-03-16 0.15% 2.12% +1.97%
3 2025-08-13 0.15%

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-20125

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.1 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
3.1 5.3 [email protected]
7.2 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
1.2 5.9 [email protected]

Weakness enumeration for CVE-2025-20125

Affected software / configurations for CVE-2025-20125

Vendor Product Version Raw CPE
cisco identity_services_engine < 3.1 cpe:2.3:a:cisco:identity_services_engine:*:*:*:*:*:*:*:*
cisco identity_services_engine 3.1.0 cpe:2.3:a:cisco:identity_services_engine:3.1.0:-:*:*:*:*:*:*
cisco identity_services_engine 3.1.0 cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch1:*:*:*:*:*:*
cisco identity_services_engine 3.1.0 cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch2:*:*:*:*:*:*
cisco identity_services_engine 3.1.0 cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch3:*:*:*:*:*:*
cisco identity_services_engine 3.1.0 cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch4:*:*:*:*:*:*
cisco identity_services_engine 3.1.0 cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch5:*:*:*:*:*:*
cisco identity_services_engine 3.1.0 cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch6:*:*:*:*:*:*
cisco identity_services_engine 3.1.0 cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch7:*:*:*:*:*:*
cisco identity_services_engine 3.1.0 cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch8:*:*:*:*:*:*
cisco identity_services_engine 3.1.0 cpe:2.3:a:cisco:identity_services_engine:3.1.0:patch9:*:*:*:*:*:*
cisco identity_services_engine 3.2.0 cpe:2.3:a:cisco:identity_services_engine:3.2.0:-:*:*:*:*:*:*
cisco identity_services_engine 3.2.0 cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch1:*:*:*:*:*:*
cisco identity_services_engine 3.2.0 cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch2:*:*:*:*:*:*
cisco identity_services_engine 3.2.0 cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch3:*:*:*:*:*:*
cisco identity_services_engine 3.2.0 cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch4:*:*:*:*:*:*
cisco identity_services_engine 3.2.0 cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch5:*:*:*:*:*:*
cisco identity_services_engine 3.2.0 cpe:2.3:a:cisco:identity_services_engine:3.2.0:patch6:*:*:*:*:*:*
cisco identity_services_engine 3.3.0 cpe:2.3:a:cisco:identity_services_engine:3.3.0:-:*:*:*:*:*:*
cisco identity_services_engine 3.3.0 cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch1:*:*:*:*:*:*
cisco identity_services_engine 3.3.0 cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch2:*:*:*:*:*:*
cisco identity_services_engine 3.3.0 cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch3:*:*:*:*:*:*

References for CVE-2025-20125

cvelogic Threat Intelligence