Cisco Secure Firewall Adaptive Security Appliance Software and Secure Firewall Threat Defense Software VPN Web Server Unauthorized Access Vulnerability

Update: On November 5, 2025, Cisco became aware of a new attack variant against devices running Cisco Secure ASA Software or Cisco Secure FTD Software releases that are affected by CVE-2025-20333 and CVE-2025-20362. This attack can cause unpatched devices to unexpectedly reload, leading to denial...

Cisco Secure Firewall Adaptive Security Appliance Software and Secure Firewall Threat Defense Software VPN Web Server Remote Code Execution Vulnerability

Update: On November 5, 2025, Cisco became aware of a new attack variant against devices running Cisco Secure ASA Software or Cisco Secure FTD Software releases that are affected by CVE-2025-20333 and CVE-2025-20362. This attack can cause unpatched devices to unexpectedly reload, leading to denial...

Cisco IOS XE Software Web Authentication Reflected Cross-Site Scripting Vulnerability

A vulnerability in the Web Authentication feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to conduct a reflected cross-site scripting attack XSS on an affected device. This vulnerability is due to improper sanitization of user-supplied input. An attacker could...

Cisco IOS and IOS XE Software TACACS+ Authentication Bypass Vulnerability

A vulnerability in the implementation of the TACACS+ protocol in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to view sensitive data or bypass authentication. This vulnerability exists because the system does not properly check whether the required...

Cisco IOS XE Software CLI Argument Injection Vulnerability

A vulnerability in the CLI of Cisco IOS XE Software could allow an authenticated, local attacker with administrative privileges to execute arbitrary commands as root on the underlying operating system of an affected device. This vulnerability is due to insufficient validation of user arguments th...

Cisco IOS XE Software Network-Based Application Recognition Denial of Service Vulnerability

A vulnerability in the Network-Based Application Recognition NBAR feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, causing a denial of service DoS condition. This vulnerability is due to improper handling of malformed Control...

Cisco IOS XE Software Secure Boot Bypass Vulnerabilities

Multiple vulnerabilities in Cisco IOS XE Software could allow an authenticated, local attacker with level-15 privileges or an unauthenticated attacker with physical access to an affected device to execute persistent code at boot time and break the chain of trust. These vulnerabilities are due...

Cisco Wireless Access Point Software Device Analytics Action Frame Injection Vulnerability

A vulnerability in the Device Analytics action frame processing of Cisco Wireless Access Point AP Software could allow an unauthenticated, adjacent attacker to inject wireless 802.11 action frames with arbitrary information. This vulnerability is due to insufficient verification checks of incomin...

Cisco IOS Software Industrial Ethernet Switch Device Manager Denial of Service Vulnerability

A vulnerability in the web UI of Cisco IOS Software could allow an authenticated, remote attacker with low privileges to cause a denial of service DoS condition on an affected device. This vulnerability is due to improper input validation. An attacker could exploit this vulnerability by sending a...

Cisco IOS XE Software for Catalyst 9000 Series Switches Denial of Service Vulnerability

A vulnerability in the handling of certain Ethernet frames in Cisco IOS XE Software for Catalyst 9000 Series Switches could allow an unauthenticated, adjacent attacker to cause an egress port to become blocked and drop all outbound traffic. This vulnerability is due to improper handling of crafte...

Cisco IOS XE Software Simple Network Management Protocol Denial of Service Vulnerability

A vulnerability in the Simple Network Management Protocol SNMP subsystem of Cisco IOS XE Software could allow an authenticated, remote attacker to cause a denial of service DoS condition on an affected device. This vulnerability is due to improper error handling when parsing a specific SNMP...

Cisco IOS and IOS XE Software SNMP Denial of Service and Remote Code Execution Vulnerability

A vulnerability in the Simple Network Management Protocol SNMP subsystem of Cisco IOS Software and Cisco IOS XE Software could allow the following: An authenticated, remote attacker with low privileges could cause a denial of service DoS condition on an affected device that is running Cisco IOS...

Cisco SD-WAN vEdge Software Access Control List Bypass Vulnerability

A vulnerability in the access control list ACL processing of IPv4 packets of Cisco SD-WAN vEdge Software could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to the improper enforcement of the implicit deny all at the end of a configured ACL. An...

Cisco IOS XE Software on Cisco Catalyst 9500X and 9600X Series Switches Virtual Interface Access Control List Bypass Vulnerability

A vulnerability in the access control list ACL programming of Cisco IOS XE Software for Cisco Catalyst 9500X and 9600X Series Switches could allow an unauthenticated, remote attacker to bypass a configured ACL on an affected device. This vulnerability is due to the flooding of traffic from an...

Cisco IOS XE Software for Catalyst 9800 Series Wireless Controller for Cloud Unauthenticated Access to Certificate Enrollment Service Vulnerability

A vulnerability in the Day One setup process of Cisco IOS XE Software for Catalyst 9800 Series Wireless Controllers for Cloud 9800-CL could allow an unauthenticated, remote attacker to access the public-key infrastructure PKI server that is running on an affected device. This vulnerability is due...

Cisco IOS XE Software HTTP API Command Injection Vulnerability

A vulnerability in the HTTP API subsystem of Cisco IOS XE Software could allow a remote attacker to inject commands that will execute with root privileges into the underlying operating system. This vulnerability is due to insufficient input validation. An attacker with administrative privileges...

Cisco IOS and IOS XE Software CLI Denial of Service Vulnerability

A vulnerability in the CLI of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, local attacker to cause an affected device to reload unexpectedly, resulting in a denial of service DoS condition. This vulnerability is due to a buffer overflow. An attacker with a...

Cisco Access Point Software Intermittent IPv6 Gateway Change Vulnerability

A vulnerability in the IPv6 Router Advertisement RA packet processing of Cisco Access Point Software could allow an unauthenticated, adjacent attacker to modify the IPv6 gateway on an affected device. This vulnerability is due to a logic error in the processing of IPv6 RA packets that are receive...

Cisco IOS XR ARP Broadcast Storm Denial of Service Vulnerability

A vulnerability in the Address Resolution Protocol ARP implementation of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to trigger a broadcast storm, leading to a denial of service DoS condition on an affected device. This vulnerability is due to how Cisco IOS XR Software...

Cisco IOS XR Software Management Interface ACL Bypass Vulnerability

A vulnerability in the management interface access control list ACL processing feature in Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass configured ACLs for the SSH, NetConf, and gRPC features. This vulnerability exists because management interface ACLs have not...

Cisco IOS XR Software Image Verification Bypass Vulnerability

A vulnerability in the installation process of Cisco IOS XR Software could allow an authenticated, local attacker to bypass Cisco IOS XR Software image signature verification and load unsigned software on an affected device. To exploit this vulnerability, the attacker must have root-system...

Cisco Unified Communications Manager Cross-Site Request Forgery Vulnerability

A vulnerability in the web-based management interface of Cisco Unified Communications Manager Unified CM Software and Cisco Unified CM Session Management Edition SME Software could allow an unauthenticated, remote attacker to conduct a cross-site request forgery CSRF attack on an affected device...

Cisco Evolved Programmable Network Manager and Cisco Prime Infrastructure Stored Cross-Site Scripting Vulnerability

A vulnerability in the web-based management interface of Cisco Evolved Programmable Network Manager EPNM and Cisco Prime Infrastructure could allow an authenticated, remote attacker to conduct a stored cross-site scripting XSS attack against users of the interface of an affected system. This...

Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Software Vulnerabilities

Multiple vulnerabilities in the directory permissions of Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video Phone 8875 with Cisco Session Initiation Protocol SIP Software could allow an unauthenticated, remote attacker to conduct arbitrary file write and informatio...

Cisco Webex Meetings URL Redirection Vulnerability

A vulnerability in Cisco Webex Meetings could have allowed an unauthenticated, remote attacker to redirect a targeted Webex Meetings user to an untrusted website. Cisco has addressed this vulnerability in the Cisco Webex Meetings service, and no customer action is needed. This vulnerability exist...

Cisco Evolved Programmable Network Manager and Cisco Prime Infrastructure Information Disclosure Vulnerability

A vulnerability in the web-based management interface of Cisco Evolved Programmable Network Manager EPNM and Cisco Prime Infrastructure could allow an authenticated, remote attacker to obtain sensitive information from an affected system. This vulnerability is due to improper validation of reques...

Cisco Webex Meetings Cross-Site Scripting Vulnerability

A vulnerability in the user profile component of Cisco Webex Meetings could have allowed an authenticated, remote attacker with low privileges to conduct a cross-site scripting XSS attack against a user of the web-based interface. Cisco has addressed this vulnerability in the Cisco Webex Meetings...

Cisco Unified Communications Manager IM & Presence Service Cross-Site Scripting Vulnerability

A vulnerability in the web-based management interface of Cisco Unified Communications Manager IM & Presence Service Unified CM IM&P could allow an unauthenticated, remote attacker to conduct a cross-site scripting XSS attack against a user of the interface. This vulnerability exists because the...

Cisco Evolved Programmable Network Manager Arbitrary File Upload Vulnerability

A vulnerability in the web-based management interface of Cisco Evolved Programmable Network Manager EPNM could allow an authenticated, remote attacker to upload arbitrary files to an affected device. This vulnerability is due to improper validation of files that are uploaded to the web-based...

Cisco Integrated Management Controller Virtual Keyboard Video Monitor Open Redirect Vulnerability

A vulnerability in the Virtual Keyboard Video Monitor vKVM connection handling of Cisco Integrated Management Controller IMC could allow an unauthenticated, remote attacker to redirect a user to a malicious website. This vulnerability is due to insufficient verification of vKVM endpoints. An...

Cisco UCS Manager Software Command Injection Vulnerabilities

Multiple vulnerabilities in the CLI and web-based management interface of Cisco UCS Manager Software could allow an authenticated attacker with administrative privileges to perform command injection attacks on an affected system and elevate privileges to root. For more information about these...

Cisco Nexus 3000 and 9000 Series Switches Intermediate System-to-Intermediate System Denial of Service Vulnerability

A vulnerability in the Intermediate System-to-Intermediate System IS-IS feature of Cisco NX-OS Software for Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches in standalone NX-OS mode could allow an unauthenticated, adjacent attacker to cause the IS-IS process to unexpectedly...

Cisco NX-OS Software Command Injection Vulnerability

A vulnerability in the CLI of Cisco NX-OS Software could allow an authenticated, local attacker to execute a command injection attack on the underlying operating system of an affected device. To exploit this vulnerability, the attacker must have valid user credentials on the affected device. This...

Cisco Nexus Dashboard Path Traversal Vulnerability

A vulnerability in the backup restore functionality of Cisco Nexus Dashboard could allow an authenticated, remote attacker to conduct a path traversal attack on an affected device. This vulnerability is due to insufficient validation of the contents of a backup file. An attacker with valid...

Cisco Integrated Management Controller Virtual Keyboard Video Monitor Stored Cross-Site Scripting Vulnerability

A vulnerability in the Virtual Keyboard Video Monitor vKVM connection handling of Cisco Integrated Management Controller IMC could allow an authenticated, remote attacker with low privileges to conduct a stored cross-site scripting XSS attack against a user of the interface. This vulnerability is...

Cisco UCS Manager Software Stored Cross-Site Scripting Vulnerability

A vulnerability in the web-based management interface of Cisco UCS Manager Software could allow an authenticated, remote attacker to conduct a stored cross-site scripting XSS attack against a user of the interface. This vulnerability is due to insufficient validation of user-supplied input by the...

Cisco Nexus 3000 and 9000 Series Switches Protocol Independent Multicast Version 6 Denial of Service Vulnerability

A vulnerability in the Protocol Independent Multicast Version 6 PIM6 feature of Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches in standalone NX-OS mode could allow an authenticated, low-privileged, remote attacker to trigger a crash of the PIM6 process, resulting in a denia...

Cisco Nexus Dashboard and Nexus Dashboard Fabric Controller Unauthorized REST API Vulnerabilities

Multiple vulnerabilities in the REST API endpoints of Cisco Nexus Dashboard and Cisco Nexus Dashboard Fabric Controller NDFC could allow an authenticated, low-privileged, remote attacker to view sensitive information or upload and modify files on an affected device. These vulnerabilities exist...

Cisco NX-OS Software Sensitive Log Information Disclosure Vulnerability

A vulnerability in the logging feature of Cisco NX-OS Software for Cisco Nexus 3000 Series Switches, Cisco Nexus 9000 Series Switches in standalone NX-OS mode, Cisco UCS 6400 Fabric Interconnects, Cisco UCS 6500 Series Fabric Interconnects, and Cisco UCS 9108 100G Fabric Interconnects could allow...

Cisco Evolved Programmable Network Manager and Cisco Prime Infrastructure Sensitive Information Disclosure Vulnerability

A vulnerability in the web-based management interface of Cisco Evolved Programmable Network Manager EPNM and Cisco Prime Infrastructure could allow an authenticated, low-privileged, remote attacker to retrieve arbitrary files from the underlying file system on an affected device. This vulnerabili...

Cisco Duo Authentication Proxy Information Disclosure Vulnerability

A vulnerability in the debug logging function of Cisco Duo Authentication Proxy could allow an authenticated, high-privileged, remote attacker to view sensitive information in a system log file. This vulnerability is due to insufficient masking of sensitive information before it is written to...

Cisco Identity Services Engine Arbitrary File Upload Vulnerability

A vulnerability in the GUI of Cisco Identity Services Engine ISE could allow an authenticated, remote attacker with administrative privileges to upload files to an affected device. This vulnerability is due to improper validation of the file copy function. An attacker could exploit this...

Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software SSL/TLS Certificate Denial of Service Vulnerability

A vulnerability in the certificate processing 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 DoS...

Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Access Control Rules Bypass Vulnerability

A vulnerability in the implementation of access control rules for loopback interfaces in Cisco Secure Firewall Adaptive Security Appliance ASA Software and Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, remote attacker to send traffic that should have been block...

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

A vulnerability in the DHCP client functionality of Cisco Secure Firewall Adaptive Security Appliance ASA Software and Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, adjacent attacker to exhaust available memory. This vulnerability is due to improper validation ...

Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Authenticated Command Injection Vulnerabilities

Multiple vulnerabilities in Cisco Secure Firewall Adaptive Security Appliance ASA Software and Cisco Secure Firewall Threat Defense FTD Software could allow an authenticated, local attacker to execute arbitrary commands on the underlying operating system with root-level privileges. To exploit the...

Cisco Secure Firewall Management Center Software Authorization Bypass Vulnerabilities

Multiple vulnerabilities in the web-based management interface of Cisco Secure Firewall Management Center FMC Software could allow an authenticated, remote attacker to access files that they are not authorized to access. For more information about these vulnerabilities, see the Details "details"...

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

A vulnerability in the Remote Access SSL VPN service for Cisco Secure Firewall Adaptive Security Appliance ASA Software and Cisco Secure Firewall Threat Defense FTD Software could allow a remote attacker that is authenticated as a VPN user to cause the device to reload unexpectedly, resulting in ...

Cisco Secure Firewall Threat Defense Software Snort 3 Denial of Service Vulnerability

A vulnerability in the packet inspection functionality of the Snort 3 Detection Engine of Cisco Secure Firewall Threat Defense FTD Software could allow an unauthenticated, remote attacker to cause a denial of service DoS condition on an affected device. This vulnerability is due to incorrect...

Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Network Address Translation DNS Inspection Denial of Service Vulnerability

A vulnerability in the function that performs IPv4 and IPv6 Network Address Translation NAT DNS inspection 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 the device t...