CVE-2026-76439

EUVD-2026-81142
A vulnerability in the endpoint posture status reporting functionality of the guest portal web application of Cisco ISE could allow an unauthenticated, remote attacker to submit forged posture status events into the endpoint posture pipeline.

This vulnerability is due to insufficient authentication on an internal interface that is exposed through the guest portal. An attacker could exploit this vulnerability by sending a crafted request to an affected system. A successful exploit could allow the attacker to manipulate the posture status on the affected system.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.3 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 32.94%
Affected Products (NVD)
VendorProductVersion
ciscoidentity_services_engine
𝑥
< 3.3.0
ciscoidentity_services_engine
3.3.0:patch1
ciscoidentity_services_engine
3.3.0:patch10
ciscoidentity_services_engine
3.3.0:patch11
ciscoidentity_services_engine
3.3.0:patch2
ciscoidentity_services_engine
3.3.0:patch3
ciscoidentity_services_engine
3.3.0:patch4
ciscoidentity_services_engine
3.3.0:patch5
ciscoidentity_services_engine
3.3.0:patch6
ciscoidentity_services_engine
3.3.0:patch7
ciscoidentity_services_engine
3.3.0:patch8
ciscoidentity_services_engine
3.3.0:patch9
ciscoidentity_services_engine
3.4.0
ciscoidentity_services_engine
3.4.0:patch1
ciscoidentity_services_engine
3.4.0:patch2
ciscoidentity_services_engine
3.4.0:patch3
ciscoidentity_services_engine
3.4.0:patch4
ciscoidentity_services_engine
3.4.0:patch5
ciscoidentity_services_engine
3.4.0:patch6
ciscoidentity_services_engine
3.5.0
ciscoidentity_services_engine
3.5.0:patch1
ciscoidentity_services_engine
3.5.0:patch2
ciscoidentity_services_engine
3.5.0:patch3
ciscoidentity_services_engine_passive_identity_connector
𝑥
< 3.3.0
ciscoidentity_services_engine_passive_identity_connector
3.3.0:patch1
ciscoidentity_services_engine_passive_identity_connector
3.3.0:patch10
ciscoidentity_services_engine_passive_identity_connector
3.3.0:patch11
ciscoidentity_services_engine_passive_identity_connector
3.3.0:patch2
ciscoidentity_services_engine_passive_identity_connector
3.3.0:patch3
ciscoidentity_services_engine_passive_identity_connector
3.3.0:patch4
ciscoidentity_services_engine_passive_identity_connector
3.3.0:patch5
ciscoidentity_services_engine_passive_identity_connector
3.3.0:patch6
ciscoidentity_services_engine_passive_identity_connector
3.3.0:patch7
ciscoidentity_services_engine_passive_identity_connector
3.3.0:patch8
ciscoidentity_services_engine_passive_identity_connector
3.3.0:patch9
ciscoidentity_services_engine_passive_identity_connector
3.4.0
ciscoidentity_services_engine_passive_identity_connector
3.4.0:patch1
ciscoidentity_services_engine_passive_identity_connector
3.4.0:patch2
ciscoidentity_services_engine_passive_identity_connector
3.4.0:patch3
ciscoidentity_services_engine_passive_identity_connector
3.4.0:patch4
ciscoidentity_services_engine_passive_identity_connector
3.4.0:patch5
ciscoidentity_services_engine_passive_identity_connector
3.4.0:patch6
𝑥
= Vulnerable software versions