CVE-2026-20190 | Cisco Identity Services Engine Information Disclosure Vulnerability

A vulnerability in Cisco ISE and ISE-PIC could allow an unauthenticated, remote attacker to view sensitive information on an affected device. This vulnerability is due to improper authorization checks when a resource is accessed. An attacker could exploit this vulnerability by sending crafted traffic to an affected device. A successful exploit could allow the attacker to gain access to sensitive information, including hashed credentials that could be used in future attacks.

Published: 2026-06-17 Last update: 2026-06-22 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-20190 is rated Moderate Risk (40.1/100): CVSS High severity, with low exploitation likelihood (EPSS 0.37%). Review affected assets and schedule remediation.

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

Exploit prediction scoring system (EPSS) score for CVE-2026-20190

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 2026-06-18 — 0.37% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-20190

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N 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:N)
No account or special rights needed—anonymous or random user is enough.
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:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 3.6 [email protected]

Weakness enumeration for CVE-2026-20190

GitHub Security Advisory for CVE-2026-20190

GHSA-6x4j-83f8-hhx2 · Severity: high — A vulnerability in Cisco ISE and ISE-PIC could allow an unauthenticated, remote attacker to view...

Affected software / configurations for CVE-2026-20190

Vendor Product Version Raw CPE
cisco identity_services_engine 3.4.0 cpe:2.3:a:cisco:identity_services_engine:3.4.0:-:*:*:*:*:*:*
cisco identity_services_engine 3.4.0 cpe:2.3:a:cisco:identity_services_engine:3.4.0:patch1:*:*:*:*:*:*
cisco identity_services_engine 3.4.0 cpe:2.3:a:cisco:identity_services_engine:3.4.0:patch2:*:*:*:*:*:*
cisco identity_services_engine 3.4.0 cpe:2.3:a:cisco:identity_services_engine:3.4.0:patch3:*:*:*:*:*:*
cisco identity_services_engine 3.4.0 cpe:2.3:a:cisco:identity_services_engine:3.4.0:patch4:*:*:*:*:*:*
cisco identity_services_engine 3.4.0 cpe:2.3:a:cisco:identity_services_engine:3.4.0:patch5:*:*:*:*:*:*
cisco identity_services_engine 3.5.0 cpe:2.3:a:cisco:identity_services_engine:3.5.0:-:*:*:*:*:*:*
cisco identity_services_engine 3.5.0 cpe:2.3:a:cisco:identity_services_engine:3.5.0:patch1:*:*:*:*:*:*
cisco identity_services_engine 3.5.0 cpe:2.3:a:cisco:identity_services_engine:3.5.0:patch2:*:*:*:*:*:*
cisco identity_services_engine_passive_identity_connector 3.4.0 cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:-:*:*:*:*:*:*
cisco identity_services_engine_passive_identity_connector 3.4.0 cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:patch1:*:*:*:*:*:*
cisco identity_services_engine_passive_identity_connector 3.4.0 cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:patch2:*:*:*:*:*:*
cisco identity_services_engine_passive_identity_connector 3.4.0 cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:patch3:*:*:*:*:*:*
cisco identity_services_engine_passive_identity_connector 3.4.0 cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:patch4:*:*:*:*:*:*
cisco identity_services_engine_passive_identity_connector 3.4.0 cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:patch5:*:*:*:*:*:*
cisco identity_services_engine_passive_identity_connector 3.5.0 cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.5.0:-:*:*:*:*:*:*
cisco identity_services_engine_passive_identity_connector 3.5.0 cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.5.0:patch1:*:*:*:*:*:*
cisco identity_services_engine_passive_identity_connector 3.5.0 cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.5.0:patch2:*:*:*:*:*:*

References for CVE-2026-20190

cvelogic Threat Intelligence