CVE-2026-20190
CVE-2026-20190 is a high-severity vulnerability in Cisco Identity Services Engine with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-285.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- EPSS exploit prediction: 1% (41st percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-37749
- Weakness: CWE-285
- Affected product: Cisco Identity Services Engine
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is CVE-2026-20190?
- 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.
- How severe is CVE-2026-20190?
- CVE-2026-20190 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2026-20190 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-20190?
- CVE-2026-20190 primarily affects Cisco Identity Services Engine. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2026-20190?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2026-20190 have an EU (EUVD) identifier?
- Yes. CVE-2026-20190 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-37749.
- When was CVE-2026-20190 published?
- CVE-2026-20190 was published on 2026-06-17 and last updated on 2026-09-25.
References
Affected products (15)
- cpe:2.3:a:cisco:identity_services_engine:3.4.0:-:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.4.0:patch1:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.4.0:patch2:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.4.0:patch3:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.4.0:patch4:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.4.0:patch5:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.5.0:-:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.5.0:patch1:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.5.0:patch2:*:*:*:*:*:*
- cpe:2.3:a: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:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:patch2:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:patch3:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:patch4:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:patch5:*:*:*:*:*:*
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