CVE-2026-17526

Keycloak-services: keycloak-services: privilege escalation via impersonation role allows takeover of realm administrator accounts

Keycloak is an open-source identity and access management solution. A vulnerability was discovered where a user with the impersonation role can impersonate a realm administrator. This allows the attacker to gain full administrative control over the realm, including the ability to manage users, clients, and roles.

CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Build Keycloak Build Of Keycloak Data Grid 8 and 4 more

CVE-2026-19607

Keycloak-services: keycloak-services: broker-originated username collision causes account lockout

A flaw was found in the first-broker-login flow of the keycloak-services component. This component handles the initial authentication and account linking when a user logs in via an external identity provider. The issue allows an attacker to register a matching username on an external provider to trigger a collision in Keycloak, which results in the legitimate user being locked out of their account.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Build Keycloak Build Of Keycloak Red Hat Single Sign On

CVE-2026-20306

Cisco Identity Services Engine Command Injection Vulnerability

A vulnerability in the REST API of Cisco ISE and ISE-PIC could allow an authenticated, remote attacker to perform command injection attacks on the underlying operating system and elevate privileges to root. To exploit this vulnerability, the attacker must have valid administrative credentials. This vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by sending crafted commands to the web-based management interface of an affected device. A successful exploit could allow the attacker to execute arbitrary code on the device and elevate privileges to root. In single-node deployments, successful exploitation of this vulnerability could cause the affected ISE node to become unavailable, resulting in a DoS condition. In that condition, endpoints that have not already authenticated would be unable to access the network until the node is restored.

CVSS 3.1 · 9.1 Critical EPSS 1.6% KEV · Not listed

Vendors

Cisco

Products

Identity Services Engine Passive Identity Connector Identity Services Engine Software

CVE-2026-20305

Cisco Identity Services Engine Command Injection Vulnerability

A vulnerability in the diagnostic tools of Cisco ISE and ISE-PIC could allow an authenticated, remote attacker to perform command injection attacks on the underlying operating system and elevate privileges to&nbsp;root. To exploit this vulnerability, the attacker must have valid administrative credentials. This vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by sending crafted commands to the web-based management interface of an affected device. A successful exploit could allow the attacker to execute arbitrary code on the device and elevate privileges to root. In single-node deployments, successful exploitation of this vulnerability could cause the affected ISE node to become unavailable, resulting in a denial of service (DoS) condition. In that condition, endpoints that have not already authenticated would be unable to access the network until the node is restored.

CVSS 3.1 · 9.1 Critical EPSS 1.6% KEV · Not listed

Vendors

Cisco

Products

Identity Services Engine Passive Identity Connector Identity Services Engine Software

CVE-2026-20307

Cisco Identity Services Engine Remote Code Execution Vulnerability

A vulnerability in the web-based management interface of Cisco ISE could allow an authenticated, remote attacker to execute arbitrary commands on the underlying operating system of an affected device. To exploit this vulnerability, the attacker must have at least low-privileged administrative credentials. This vulnerability is due to insecure deserialization of a user-supplied Java byte stream. An attacker could exploit this vulnerability by sending a crafted serialized Java object to the web-based management interface of an affected device. A successful exploit could allow the attacker to execute arbitrary code on the device and elevate privileges to root. In single-node deployments, successful exploitation of this vulnerability could cause the affected ISE node to become unavailable, resulting in a denial of service (DoS) condition. In that condition, endpoints that have not already authenticated would be unable to access the network until the node is restored.

CVSS 3.1 · 9.9 Critical EPSS < 1% KEV · Not listed

Vendors

Cisco

Products

Identity Services Engine Software

CVE-2026-76420

Cisco Secure Firewall Management Center Software Impersonated sftunnel Connection Vulnerability

A vulnerability in the internal configuration of the Apache JServ Protocol (AJP)&nbsp;connector for Cisco Secure FMC Software could allow an unauthenticated, remote attacker to impersonate a peer device. This vulnerability is due to incorrect initialization of encryption parameters for the AJP connector at boot time. An attacker could exploit this vulnerability by sending crafted packets to the AJP connector. A&nbsp;successful exploit could allow the attacker to execute commands as root and&nbsp;gain full control over the FMC REST APIs on the affected device. Note: This vulnerability can be exploited only if the valid sftunnel connection between Cisco Secure FMC Software and Cisco Secure FTD Software is down.

CVSS 3.1 · 9 Critical EPSS < 1% KEV · Not listed

Vendors

Cisco

Products

Secure Firewall Management Center

CVE-2026-20331

Cisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software and Secure Firewall Management Center Software Hardening Release - Protection Mechanism Failure Vulnerabilities

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Adaptive Security Appliance Software, Cisco Secure Firewall Threat Defense Software and Cisco Secure Firewall Management Center Software engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. &nbsp; The vulnerabilities tracked by CVE-2026-20331 are related to the failure of protection mechanisms issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-693.

CVSS 3.1 · 9.6 Critical EPSS < 1% KEV · Not listed

Vendors

Cisco

Products

Adaptive Security Appliance Software Identity Services Engine Passive Identity Connector Secure Firewall Management Center

CVE-2026-84397

Adobe Experience Manager | Cross-site Scripting (Stored XSS) (CWE-79)

Adobe Experience Manager is affected by a stored Cross-Site Scripting (XSS) vulnerability that could be abused by a low-privileged attacker to inject malicious scripts into vulnerable form fields. Malicious JavaScript may be executed in a victim's browser when they browse to the page containing the vulnerable field. Scope is changed.

CVSS 3.1 · 5.4 Medium EPSS < 1% KEV · Not listed

Vendors

Adobe

Products

Adobe Experience Manager Experience Manager Cloud Service

CVE-2026-86003

CoreDNS DoH/DoQ/gRPC bypass UPDATE rejection enforced on UDP/TCP

CoreDNS is a DNS server written in Go. Prior to 1.14.7, the DNS-over-HTTPS, DNS-over-HTTP/3, DNS-over-QUIC, and DNS-over-gRPC listeners in plugin/pkg/doh/doh.go, core/dnsserver/server_quic.go, and core/dnsserver/server_grpc.go call dns.Msg.Unpack without the dns.DefaultMsgAcceptFunc request policy used by UDP, TCP, and DNS-over-TLS. An unauthenticated client can send an RFC 2136 UPDATE that the proxy or forward plugin passes unchanged to an update-capable upstream. If that upstream trusts CoreDNS's source address or connection and does not require an attacker-unknown end-to-end TSIG, the request appears to originate from CoreDNS and can add, replace, or delete DNS records, redirect traffic, take over names, alter mail routing, or disrupt the writable zone. This issue is fixed in version 1.14.7.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Coredns.io

Products

Coredns

CVE-2026-81875

HAPI FHIR: SHCParser unbounded DEFLATE decompression causes denial of service

HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java. Prior to version 6.9.12, SHCParser in org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/elementmodel/SHCParser.java can consume attacker-controlled Smart Health Card JWT content whose header contains zip: "DEF" and whose small raw-DEFLATE payload expands to a very large value. SHCParser.decodeJWT() passes the decoded payload to SHCParser.inflate(), which accumulates all decompressed bytes in a ByteArrayOutputStream without an output-size limit before JSON parsing, and SHCParser.decompress() contains the same unbounded pattern. An application or validator service that accepts attacker-supplied SHC content can therefore suffer excessive heap allocation, severe garbage-collection pressure, request failure, process instability, or process termination. This issue is fixed in version 6.9.12.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Hapifhir

Products

Hl7 Fhir Core

CVE-2026-73443

On affected platforms running Arista EOS with VRRPv2 IP-AH authentication configured, an unauthenticated attacker within the same layer 2 network segment on which VRRP is running can capture a legitimate authenticated VRRP advertisement and replay it indef

On affected platforms running Arista EOS with VRRPv2 IP-AH authentication configured, an unauthenticated attacker within the same layer 2 network segment on which VRRP is running can capture a legitimate authenticated VRRP advertisement and replay it indefinitely. Replayed advertisements can be used to advertise stale VRRP state, for example to prevent a backup router from taking over the virtual gateway after the original master has gone down, resulting in a denial of service for hosts using the virtual gateway address.

CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed

Vendors

Arista

Products

Eos

CVE-2026-81876

HAPI FHIR: SHCParser DEFLATE infinite loop causes denial of service

HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java. Prior to version 6.9.12, SHCParser in org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/elementmodel/SHCParser.java can enter an infinite loop while processing attacker-controlled Smart Health Card JWT content whose header contains zip: "DEF" and whose raw-DEFLATE payload is empty or truncated. SHCParser.decodeJWT() reaches SHCParser.inflate(), where Inflater.inflate() can return zero while Inflater.finished() remains false and Inflater.needsInput() is true. The loop also lacks an Inflater.needsDictionary() termination check, SHCParser.decompress() contains the same zero-progress pattern, and ResourceChecker.java can reach SHC parsing during file-format detection. A malformed validation request can pin a JVM worker thread indefinitely, and concurrent requests can exhaust all validation workers. This issue is fixed in version 6.9.12.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Hapifhir

Products

Hl7 Fhir Core

CVE-2026-73442

On affected platforms running Arista EOS with VRRP enabled, the peer device VRRP authentication credentials are logged in cleartext on the switch, allowing an authenticated user with sufficient privileges to view agent trace logs (or a system receiving for

On affected platforms running Arista EOS with VRRP enabled, the peer device VRRP authentication credentials are logged in cleartext on the switch, allowing an authenticated user with sufficient privileges to view agent trace logs (or a system receiving forwarded log output) to obtain the peer device VRRP authentication credentials without having access to the network segment on which VRRP is running.

CVSS 4.0 · 2.1 Low EPSS < 1% KEV · Not listed

Vendors

Arista

Products

Eos

CVE-2026-73462

On affected platforms running Arista EOS with IGMP (Internet Group Management Protocol) snooping configured (enabled by default on all VLANs), a network-adjacent unauthenticated attacker can send malformed network packets on an affected VLAN to cause the I

On affected platforms running Arista EOS with IGMP (Internet Group Management Protocol) snooping configured (enabled by default on all VLANs), a network-adjacent unauthenticated attacker can send malformed network packets on an affected VLAN to cause the IGMP snooping agent to terminate unexpectedly. This results in a temporary disruption of multicast traffic management, which may cause multicast traffic to be flooded to all ports of the affected VLAN until the service recovers. Repeated exploitation could result in a prolonged loss of intended multicast forwarding behavior.

CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed

Vendors

Arista

Products

Eos

CVE-2026-20329

Cisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software and Secure Firewall Management Center Software Hardening Release - Exceptional Conditions Handling Vulnerabilities

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Adaptive Security Appliance Software, Cisco Secure Firewall Threat Defense Software and Cisco Secure Firewall Management Center Software engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. &nbsp; The vulnerabilities tracked by CVE-2026-20329 are related to issues concerning improper handling of exceptional conditions that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-703.

CVSS 3.1 · 9.9 Critical EPSS < 1% KEV · Not listed

Vendors

Cisco

Products

Adaptive Security Appliance Software Secure Firewall Management Center Secure Firewall Threat Defense

CVE-2026-20322

Cisco Nexus Dashboard Software Security Hardening Release September 2026 - Improper Access Control

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Nexus Dashboard&nbsp;engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20322 are related to improper access control issues that are grouped under the Common Weakness Enumeration (CWE) CWE-284.

CVSS 3.1 · 9.9 Critical EPSS < 1% KEV · Not listed

Vendors

Cisco

Products

Nexus Dashboard

CVE-2026-20330

Cisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software and Secure Firewall Management Center Software Hardening Release - Improper Neutralization Vulnerabilities

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Adaptive Security Appliance Software, Cisco Secure Firewall Threat Defense Software and Cisco Secure Firewall Management Center Software engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. &nbsp; The vulnerabilities tracked by CVE-2026-20330 are related to improper neutralization issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-707.

CVSS 3.1 · 9.9 Critical EPSS < 1% KEV · Not listed

Vendors

Cisco

Products

Adaptive Security Appliance Software Secure Firewall Management Center Secure Firewall Threat Defense

CVE-2026-20211

Cisco Identity Services Engine Remote Code Execution Vulnerability

A vulnerability in Cisco ISE could allow an authenticated, remote attacker to execute arbitrary commands on the underlying operating system of an affected device. To exploit this vulnerability, the attacker must have valid high-privileged administrative credentials. This vulnerability is due to insecure deserialization of Java objects by the affected software. An attacker could exploit this vulnerability by sending a crafted serialized Java object to an affected device. A successful exploit could allow the attacker to obtain user-level access to the underlying operating system and then elevate privileges to&nbsp;root. In single-node deployments, successful exploitation of this vulnerability could cause the affected ISE node to become unavailable, resulting in a DoS condition. In that condition, endpoints that have not already authenticated would be unable to access the network until the node is restored.

CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed

Vendors

Cisco

Products

Identity Services Engine Software

CVE-2026-20194

Cisco Identity Services Engine Hardening Release - Incorrect Resource Transfer Vulnerabilities

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC), engineering teams have conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20194 are related to incorrect resource transfer between spheres that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-669.

CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed

Vendors

Cisco

Products

Identity Services Engine Passive Identity Connector Identity Services Engine Software

CVE-2026-20325

Cisco Nexus Dashboard Software Security Hardening Release September 2026 - Improper Neutralization of Special Elements used in a Command

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Nexus Dashboard&nbsp;engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20325 are related to improper neutralization of special elements used in a command issue that are grouped under the Common Weakness Enumeration (CWE) CWE-77.

CVSS 3.1 · 9.9 Critical EPSS < 1% KEV · Not listed

Vendors

Cisco

Products

Nexus Dashboard