Cisco Unified Communications Manager Cross-Site Scripting Vulnerability

A vulnerability in the web-based management interface of Cisco Unified Communications Manager Unified CM and Cisco Unified Communications Manager Session Management Edition Unified CM SME could allow an unauthenticated, remote attacker to conduct a cross-site scripting XSS attack against a user o...

Cisco UCS Central Software Remote Code Execution Vulnerability

A vulnerability in the web-based management interface of Cisco UCS Central Software could allow an authenticated, remote attacker to achieve remote code execution or conduct information disclosure attacks on an affected device. This vulnerability is due to insufficient validation of user-supplied...

Cisco Identity Services Engine Authorization Bypass Vulnerability

A vulnerability in the authorization mechanism of Cisco Identity Services Engine ISE and Cisco ISE Passive Identity Connector ISE-PIC could allow an unauthenticated, remote attacker to obtain an endpoint identity certificate. This vulnerability is due to improper authorization checks. An attacker...

Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Remote Access SSL VPN Tunnel Denial of Service Vulnerability

A vulnerability in the Remote Access SSL VPN service of Cisco Secure Firewall Adaptive Security Appliance ASA Software and Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service...

Cisco Advance Notification for Publication of November 4, 2026, Security Advisories

On November 4, 2026, the Cisco Product Security Incident Response Team PSIRT published the following advisories: Cisco Security Advisory CVE ID Security Impact Rating CVSS Base Score Cisco UCS Central Software Remote Code Execution Vulnerability...

Vulnerabilities in Node.js and Brotli Affecting Cisco Products: October 2026

On October 21, 2026, Node.js announced the availability of fixes for multiple vulnerabilities across the following supported release lines: 22.x, 24.x, and 26.x. These vulnerabilities impact critical operations such as the Brotli decoder, DNS resolution, and TLS certificate validation. The...

Cisco Informational for Emergency Distrust of eMudhra Root and Intermediate Certificate Authorities

Between October 17 and October 20, 2026, a critical security compromise involving Certificate Authorities that are managed by eMudhra was uncovered. A security researcher demonstrated that the private keys for eight eMudhra intermediate certificates were fundamentally broken due to an unprecedent...

Cisco IOS XR Software for ASR 9000 Series Routers IPv4 Unicast Packets Denial of Service Vulnerability

A vulnerability in the IPv4 packet processing functionality of Cisco IOS XR Software that affects Cisco ASR 9000 and 9900 Series Aggregation Services Routers as well as Cisco ASR 9902 and 9903 Compact High-Performance Routers could allow an unauthenticated, remote attacker to cause network...

Multiple Cisco Products Snort 3 Denial of Service Vulnerabilities

Multiple Cisco products are affected by vulnerabilities in the Snort 3 Detection Engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a denial of service DoS condition. For more information about these...

Multiple Cisco Products Snort 3 Generic Routing Encapsulation Denial of Service Vulnerability

Multiple Cisco products are affected by a vulnerability in the generic routing encapsulation GRE tunnel decapsulation feature of the Snort 3 Detection Engine that could allow an unauthenticated, remote attacker to cause an unexpected restart of the Snort 3 Detection Engine. This vulnerability is...

Multiple Cisco Products Snort 3 Visual Basic for Applications Buffer Overflow Denial of Service Vulnerability

A vulnerability in the Snort 3 Visual Basic for Applications VBA Decompression Engine of multiple Cisco products could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart unexpectedly, resulting in a denial of service DoS condition. This vulnerability is due...

Cisco Expressway Series Security Hardening Release: October 2026

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Expressway Series software engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered...

Multiple Cisco Products Snort 3 Security Hardening Release: October 2026

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco owned Open Source Snort 3 Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered...

Multiple Cisco Products Snort 3 Denial of Service Vulnerability

Multiple Cisco products are affected by a vulnerability in the Snort 3 Detection Engine that could allow an unauthenticated, remote attacker to cause the detection engine to unexpectedly restart, resulting in a denial of service DoS condition. The vulnerability is due to a flaw in logic handling...

Cisco Unified Communications Manager Improper Access Control Vulnerability

A vulnerability in Cisco Unified Communications Manager Unified CM and Cisco Unified Communications Manager Session Management Edition Unified CM SME could allow an unauthenticated, remote attacker to conduct access control bypass attacks on an affected device. This vulnerability is due to improp...

Cisco Expressway Series Information Disclosure Vulnerability

A vulnerability in Cisco Expressway Series could allow an unauthenticated, remote attacker to obtain sensitive information from an affected device. This vulnerability is due to insufficient authorization checks of HTTP requests during Mobile and Remote Access MRA provisioning. An attacker could...

Cisco Secure Client Secure Firewall Posture Module Privilege Escalation Vulnerability

A vulnerability in the interprocess communication IPC channel of the Secure Firewall Posture module in Cisco Secure Client could allow an authenticated, local attacker to elevate privileges on an affected device. This vulnerability is due to insufficient validation of user-supplied input. An...

Open Source Snort 3 Control Channel Socket Arbitrary Command Execution Vulnerability

A vulnerability in the control channel socket implementation of Open Source Snort 3 could allow an authenticated, local attacker with low privileges to execute arbitrary commands as the Snort 3 process user. This vulnerability is due to a lack of authentication when a local user connects to the...

Cisco Expressway Series Remote Code Execution Vulnerability

A vulnerability in the database service feature of Cisco Expressway Series could allow an unauthenticated, remote attacker with network access to a Cisco Expressway device to execute arbitrary operating system commands as root. This vulnerability is due to the use of persistent cookies...

Multiple Cisco Products Snort 3 SMTP MIME Denial of Service Vulnerability

Multiple Cisco products are affected by a vulnerability in the Snort 3 SMTP MIME Decoder that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart. This vulnerability is due to a lack of error checking when the MIME fields of the SMTP header are parsed...

Cisco Unified Communications Products Security Hardening Release: October 2026

As part of Cisco's ongoing commitment to proactive security and product quality, engineering teams for Cisco Emergency Responder, Cisco Prime Collaboration Deployment, Cisco Unified Communications Manager Unified CM, Cisco Unified Communications Manager IM & Presence Service Unified CM IM&P, Cisc...

Cisco Advance Notification for Publication of October 21, 2026, Security Advisories

On October 21, 2026, the Cisco Product Security Incident Response Team PSIRT published the following advisories. To remediate the vulnerabilities that were disclosed on October 21, 2026, Cisco strongly recommends that customers upgrade to the fixed software that is indicated in the advisories. Fo...

Cisco Secure Email Gateway Arbitrary File Write Vulnerability

A vulnerability in the Advanced Malware Protection AMP feature of Cisco Secure Email Gateway could allow an unauthenticated, remote attacker to write arbitrary files on the underlying operating system. This vulnerability is due to improper handling of email attachments when the file reputation...

Cisco Nexus 3000 and 9000 Series Switches MPLS OAM Remote Code Execution Vulnerability

A vulnerability in the MPLS Operation, Administration, and Maintenance OAM feature of Cisco NX-OS Software for Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches could allow an unauthenticated, remote attacker to execute arbitrary code with root privileges or cause a denial of...

Cisco Application Policy Infrastructure Controller API Command Injection Vulnerability

A vulnerability in the web-based management API for Cisco Application Policy Infrastructure Controller APIC could allow an authenticated, remote attacker to execute arbitrary commands as the root user. To exploit this vulnerability, the attacker must have valid administrative credentials. This...

Cisco NX-OS Software NX-API Remote Code Execution Vulnerability

A vulnerability in the NX-API feature of Cisco NX-OS Software could allow an unauthenticated, remote attacker to execute arbitrary code with root privileges or cause a denial of service DoS condition on an affected device. The vulnerability is due to insufficient input validation of data that is...

Cisco NX-OS Software Security Hardening Release: October 2026

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco NX-OS Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. These...

Cisco NX-OS Software Control Plane Denial of Service Vulnerability

A vulnerability in Cisco NX-OS Software could allow an unauthenticated, remote attacker to exhaust system resources, causing a denial of service DoS condition. This vulnerability exists because rate limiting was improperly applied to some protocols. An attacker could exploit this vulnerability by...

Cisco Application Policy Infrastructure Controller Unauthorized File Access Vulnerability

A vulnerability in the export policies functionality of Cisco Application Policy Infrastructure Controller APIC could allow an authenticated, remote attacker to access sensitive files on an affected device. To exploit this vulnerability, the attacker must have valid administrative credentials. Th...

Cisco License (Smart Software Manager) On-Prem Vulnerabilities

Multiple vulnerabilities in the web-based management interface and API endpoints of Cisco License On-Prem, formerly Cisco Smart Software Manager On-Prem SSM On-Prem, could allow a remote attacker to gain unauthorized access, access sensitive information, cause a denial of service DoS condition, o...

Cisco Application Policy Infrastructure Controller Security Hardening Release: October 2026

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Application Policy Infrastructure Controller APIC engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internall...

Cisco Finesse Server-Side Request Forgery Vulnerability

A vulnerability in the web-based management interface of Cisco Finesse could allow an unauthenticated, remote attacker to conduct server-side request forgery SSRF attacks through an affected device. This vulnerability is due to improper input validation for specific HTTP requests. An attacker cou...

Cisco Nexus 9000 Series Fabric Switches in ACI Mode Endpoint Group Contract Bypass Vulnerability

A vulnerability in the endpoint group EPG contract functionality of Cisco Nexus 9000 Series Fabric Switches in ACI Mode could allow an unauthenticated, remote attacker to bypass configured EPG contracts. This vulnerability is due to an improper control with EPG contracts. An attacker could exploi...

Cisco Nexus 3000 and 9000 Series Switches NGOAM Remote Code Execution Vulnerabilities

Multiple vulnerabilities in the Operation, Administration, and Maintenance OAM feature of Cisco NX-OS Software, known as Next Generation OAM NGOAM, could allow an unauthenticated, remote attacker to execute arbitrary code with root privileges or cause a denial of service DoS condition on an...

Cisco NX-OS Software Python Sandbox Escape Vulnerability

A vulnerability in the Python interpreter of Cisco NX-OS Software could allow an authenticated, local attacker with low privileges to escape the Python sandbox and gain unauthorized access to the underlying operating system of an affected device. This vulnerability is due to insufficient validati...

Cisco License (Smart Software Manager) On-Prem Security Hardening Release: October 2026

As part of Cisco's ongoing commitment to proactive security and product quality, the engineering team for Cisco License On-Prem, formerly Cisco Smart Software Manager On-Prem SSM On-Prem, has conducted a comprehensive internal security review. This review resulted in software hardening releases...

Cisco Meraki Security Hardening Release: October 2026

As part of Cisco's ongoing commitment to proactive security and product quality, engineering teams conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. These vulnerabilities were found...

Cisco Advance Notification for Publication of October 7, 2026, Security Advisories

On October 7, 2026, the Cisco Product Security Incident Response Team PSIRT published the advisories that are listed in the following tables. To remediate the vulnerabilities that were disclosed on October 7, 2026, Cisco strongly recommends that customers upgrade to the fixed software that is...

Cisco Catalyst SD-WAN Manager API Authentication Bypass Vulnerability

A vulnerability in the API session-based authentication management of Cisco Catalyst SD-WAN Manager could allow an unauthenticated, remote attacker to access an affected system with privileges of the admin user. This vulnerability is due to improper handling of URI encoding in an HTTP request,...

Cisco Identity Services Engine Remote Code Execution Vulnerabilities

Multiple vulnerabilities in Cisco Identity Services Engine ISE could allow an authenticated, remote attacker to execute arbitrary commands on the underlying operating system of an affected device. To exploit these vulnerabilities, the attacker must have valid administrative credentials. For more...

Cisco Identity Services Engine Multiple Path Traversal Vulnerabilities

Multiple vulnerabilities in Cisco Identity Services Engine ISE and Cisco ISE Passive Identity Connector ISE-PIC could allow a remote attacker to conduct path traversal attacks on an affected device. For more information about these vulnerabilities, see the Details "details" section of this...

Cisco Secure Firewall Management Center Software Vulnerabilities

Multiple vulnerabilities in Cisco Secure Firewall Management Center FMC Software could allow a remote attacker to gain root access, download sensitive files, perform a SQL injection attack, or cause a denial of service DoS condition. For more information about these vulnerabilities, see the Detai...

Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software EIGRP Denial of Service Vulnerability

A vulnerability in the EIGRP implementation in Cisco Secure Firewall Adaptive Security Appliance ASA Software and Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, adjacent attacker to cause the device to reload unexpectedly, resulting in a denial of service DoS...

Cisco Secure Firewall Management Center Software Java Deserialization Remote Code Execution Vulnerability

A vulnerability in the External Database Access feature of Cisco Secure Firewall Management Center FMC Software could allow an unauthenticated, remote attacker to execute arbitrary commands as root on an affected device. This vulnerability is due to insecure deserialization of a user-supplied Jav...

Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software for Secure Firewall 3100 and 4200 Series DTLS Denial of Service Vulnerability

A vulnerability in Datagram TLS DTLS message handling of Cisco Secure Firewall Adaptive Security Appliance ASA Software and Cisco Secure Firewall Threat Defense FTD Software for Cisco Secure Firewall 3100 Series and 4200 Series devices could allow an unauthenticated, remote attacker to cause a...

Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Object Group Access Control List Bypass Vulnerabilities

Multiple vulnerabilities in the access control list ACL Object Group Search OGS implementation of Cisco Secure Firewall Adaptive Security Appliance ASA Software and Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, remote attacker to bypass configured access...

Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software IKEv2 Certificate Authentication Denial of Service Vulnerability

A vulnerability in the certification authentication feature of Internet Key Exchange version 2 IKEv2 for Cisco Secure Firewall Adaptive Security Appliance ASA Software and Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, remote attacker to cause an affected device...

Cisco Secure Firewall Management Center Software sftunnel Root Arbitrary Code Execution Vulnerability

A vulnerability in the sftunnel inter-device communication protocol of Cisco Secure Firewall Management Center FMC Software could allow an authenticated, remote attacker to execute arbitrary commands as root. This vulnerability exists because a registered sftunnel peer has incorrect permissions t...

Cisco Identity Services Engine RADIUS Denial of Service Vulnerability

A vulnerability in the RADIUS feature of Cisco Identity Services Engine ISE could allow an unauthenticated, remote attacker to cause a denial of service DoS condition on an affected device. This vulnerability is due to improper handling of certain RADIUS requests. An attacker could exploit this...

Cisco Identity Services Engine Authenticated Remote Code Execution and API Vulnerabilities

Multiple vulnerabilities in Cisco Identity Services Engine ISE could allow an authenticated, remote attacker to conduct SQL injections, modify data, or execute arbitrary commands on the underlying operating system on an affected device. For more information about these vulnerabilities, see the...