Cisco ASR 1000 Series Aggregation Services Routers SNMP High CPU Denial of Service Vulnerability

A vulnerability in Simple Network Management Protocol SNMP functions of Cisco ASR 1000 Series Aggregation Services Routers running Cisco IOS XE Software Release 3.13.6S, 3.16.2S, or 3.17.1S could allow an authenticated, remote attacker to cause high CPU usage on an affected device, resulting in a...

Cisco Firepower URL Bypass Vulnerability

A vulnerability in Cisco Firepower System Software could allow an unauthenticated, remote attacker to maliciously bypass the appliance's ability to block certain web content. The vulnerability is due to insufficient input validation checks within the system's access control rule criteria. An...

Cisco Web Security Appliance Drop Decrypt Policy Bypass Vulnerability

A vulnerability in the Decrypt for End-User Notification configuration parameter of Cisco AsyncOS Software for Cisco Web Security Appliances could allow an unauthenticated, remote attacker to connect to a secure website over Secure Sockets Layer SSL or Transport Layer Security TLS, even if the WS...

Cisco Firepower System Software FTP Malware Vulnerability

A vulnerability in the FTP Representational State Transfer Application Programming Interface REST API for Cisco Firepower System Software could allow an unauthenticated, remote attacker to bypass FTP malware detection rules and download malware over an FTP connection. The vulnerability is due to ...

Cisco Unified Intelligence Center (CUIC) Software Unauthenticated User Account Creation Vulnerability

A vulnerability in the jspringsecurityswitchuser function of Cisco Unified Intelligence Center CUIC Software could allow an unauthenticated, remote attacker to make certain changes to the system. The vulnerability is due to improper implementation of authorization controls when accessing certain...

Cisco Information Server XML Parser Denial of Service Vulnerability

A vulnerability in the default configuration of the XML parser component of Cisco Information Server CIS could allow an unauthenticated, remote attacker to access sensitive data or cause excessive consumption of system resources, which could cause a denial of service DoS condition on a targeted...

Cisco FireSIGHT System Software Convert Timing Channel Vulnerability

A vulnerability in credential authentication for valid and invalid username-password pairs for Cisco FireSIGHT System Software could allow an unauthenticated, remote attacker to determine a list of valid usernames for an affected device. The vulnerability is due to implementation details of how...

Cisco FirePOWER Management Center Unauthenticated Information Disclosure Vulnerability

A vulnerability in the Cisco FirePOWER Management Center could allow an unauthenticated, remote attacker to obtain information about the Cisco FirePOWER Management Center software version from the device login page. The vulnerability is due to verbose output returned when HTML files are retrieved...

Cisco Videoscape Distribution Suite Service Manager Unauthorized Access Vulnerability

A vulnerability in the role-based access control RBAC for certain users of the Cisco Videoscape Distribution Suite Service Manager VDS-SM could allow an authenticated, remote attacker read and write access to an internal database that contains sensitive information. The vulnerability is due to la...

Cisco Prime Collaboration Assurance Default Account Credential Vulnerability

A vulnerability in Cisco Prime Collaboration Assurance PCA Software could allow an unauthenticated, remote attacker to log in to the system shell with the default cmuser user account and access the shell with a limited set of permissions. The vulnerability is due to an undocumented account that h...

Cisco ASA Management Interface XML Parser Denial of Service Vulnerability

A vulnerability in the XML parser of the management interface in Cisco Adaptive Security Appliance ASA Software could allow an authenticated, remote attacker to cause system instability and possibly crash an affected system. The vulnerability is due to insufficient hardening of the XML parser cod...

Cisco Identity Services Engine Guest Portal Unauthorized Access Vulnerability

A vulnerability in the Cisco Identity Services Engine ISE guest portal could allow an unauthenticated, remote attacker to view a customized page on the guest portal. The vulnerability is due to lack of access control for the uploaded HTML files. An attacker could exploit this vulnerability by...

Cisco Unified Web and E-Mail Interaction Manager Broken Authentication Vulnerability

A vulnerability in Cisco Unified Web and E-Mail Interaction Manager could allow an unauthenticated, remote attacker to capture, forge, or brute force a session identifier transmitted as a parameter in GET requests. The vulnerability is due to improper use of session identifiers in GET requests. A...

Cisco IOS Software Internet Key Exchange Version 2 Denial of Service Vulnerability

A vulnerability in the Internet Key Exchange Version 2 IKEv2 module of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a reload of the affected device that would lead to a denial of service DoS condition. The vulnerability is due to how an...

Cisco NX-OS Software Input Validation Vulnerability

A vulnerability in input parsing in Cisco NX-OS Software could allow an authenticated, local attacker to execute commands on the underlying operating system. The vulnerability is due to improper filtering of parameters passed to the Stream Editor sed filter. An attacker could exploit this...

Cisco IOS Software Queue Wedge Denial of Service Vulnerability

A vulnerability in the T1/E1 driver queue implementation of Cisco IOS Software could allow an unauthenticated, remote attacker to cause an interface wedge condition, which could lead to loss of connectivity, loss of routing protocol adjacency, and could result in a denial of service DoS scenario...

Multiple Vulnerabilities in the Cisco Video Surveillance Manager

The Cisco Video Surveillance Manager VSM allows operations managers and system integrators to build customized video surveillance networks to meet their needs. Cisco VSM provides centralized configuration, management, display, and control of video from Cisco and third-party surveillance endpoints...

Cisco IOS Software Session Initiation Protocol Denial of Service Vulnerabilities

Multiple vulnerabilities exist in the Session Initiation Protocol SIP implementation in Cisco IOS® Software that could allow an unauthenticated, remote attacker to cause a reload of an affected device when SIP operation is enabled. Remote code execution may also be possible. Cisco has released...

Multiple Cisco Products Vulnerable to DNS Cache Poisoning Attacks

THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES TH...

Cisco IOS Malformed BGP Packet Causes Reload

...

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 IOS XR Software for ASR 9000 Series Aggregation Services Routers PPPoE Denial of Service Vulnerability

A vulnerability in the PPP over Ethernet PPPoE termination feature of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, adjacent attacker to crash the pppma process, resulting in a denial of service DoS condition. This vulnerability is du...

Cisco NX-OS Software External Border Gateway Protocol Denial of Service Vulnerability

A vulnerability in the External Border Gateway Protocol eBGP implementation of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service DoS condition on an affected device. This vulnerability exists because eBGP traffic is mapped to a shared hardware...

Apache Struts Vulnerability Affecting Cisco Products: December 2023

On December 7, 2023, the following vulnerability in Apache Struts was disclosed: CVE-2023-50164: An attacker can manipulate file upload params to enable paths traversal and under some circumstances this can lead to uploading a malicious file which can be used to perform Remote Code Execution. For...

Cisco Firepower Threat Defense Software Snort 3 Geolocation IP Filter Bypass Vulnerability

A vulnerability in the IP geolocation rules of Snort 3 could allow an unauthenticated, remote attacker to potentially bypass IP address restrictions. This vulnerability exists because the configuration for IP geolocation rules is not parsed properly. An attacker could exploit this vulnerability b...

Cisco Small Business 200, 300, and 500 Series Switches Web-Based Management Stored Cross-Site Scripting Vulnerability

A vulnerability in the web-based management interface of Cisco Small Business 200 Series Smart Switches, Cisco Small Business 300 Series Managed Switches, and Cisco Small Business 500 Series Stackable Managed Switches could allow an authenticated, remote attacker to conduct a stored cross-site...

Cisco Unified Communications Manager Denial of Service Vulnerability

A vulnerability in the Administrative XML Web Service AXL API of Cisco Unified Communications Manager Unified CM and Cisco Unified Communications Manager Session Management Edition Unified CM SME could allow an authenticated, remote attacker to cause a denial of service DoS condition on an affect...

Cisco Email Security Appliance, Cisco Secure Email and Web Manager, and Cisco Secure Web Appliance Next Generation Management Vulnerabilities

Multiple vulnerabilities in the next-generation UI management interface for Cisco Email Security Appliance ESA, Cisco Secure Email and Web Manager, and Cisco Secure Web Appliance, formerly known as Cisco Web Security Appliance WSA, could allow an attacker to elevate privileges or to conduct a SQL...

Cisco Network Services Orchestrator Path Traversal Vulnerability

A vulnerability in the API subsystem and in the web-management interface of Cisco Network Services Orchestrator NSO could allow an unauthenticated, remote attacker to access sensitive data. This vulnerability exists because the web-management interface and certain HTTP-based APIs do not properly...

Cisco SD-WAN vManage Authorization Bypass Vulnerability

A vulnerability in Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to bypass authorization checking and gain restricted access to the configuration information of an affected system. This vulnerability exists because the affected software has insufficient input...

Cisco IoT Field Network Director Unprotected Storage of Credentials Vulnerability

A vulnerability in the web UI of Cisco IoT Field Network Director FND could allow an authenticated, remote attacker to obtain hashes of user passwords on an affected device. The vulnerability is due to insufficient protection of user credentials. An attacker could exploit this vulnerability by...

Cisco Firepower Threat Defense Software SSL Input Validation Denial of Service Vulnerability

A vulnerability in the sslinspection component of Cisco Firepower Threat Defense FTD Software could allow an unauthenticated, remote attacker to crash Snort instances. The vulnerability is due to insufficient input validation in the sslinspection component. An attacker could exploit this...

Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software SSL/TLS Session Denial of Service Vulnerability

Update from October 22nd, 2020: Cisco has become aware of a new Cisco Adaptive Security Appliance vulnerability that could affect the fixed releases recommended for code trains 9.13 and 9.14 in the Fixed Software "fs" section of this advisory. See the Cisco Adaptive Security Appliance Software...

Cisco Firepower Management Center Software and Firepower Threat Defense Software Directory Traversal Vulnerability

A vulnerability in the sfmgr daemon of Cisco Firepower Management Center FMC Software and Cisco Firepower Threat Defense FTD Software could allow an authenticated, remote attacker to perform directory traversal and access directories outside the restricted path. The vulnerability is due to...

Cisco IOS XE Software for Cisco cBR-8 Converged Broadband Routers DHCP Denial of Service Vulnerability

A vulnerability in the DHCP message handler of Cisco IOS XE Software for Cisco cBR-8 Converged Broadband Routers could allow an unauthenticated, remote attacker to cause the supervisor to crash, which could result in a denial of service DoS condition. The vulnerability is due to insufficient erro...

Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family WPA Denial of Service Vulnerability

A vulnerability in the WPA2 and WPA3 security implementation of Cisco IOS XE Wireless Controller Software for the Cisco Catalyst 9000 Family could allow an unauthenticated, adjacent attacker to cause denial of service DoS condition on an affected device. The vulnerability is due to incorrect pack...

Cisco Data Center Network Manager Read File Path Traversal Vulnerability

A vulnerability in a specific REST API of Cisco Data Center Network Manager DCNM Software could allow an authenticated, remote attacker to conduct directory traversal attacks on an affected device. The vulnerability is due to insufficient validation of user-supplied input to the API. An attacker...

Cisco Vision Dynamic Signage Director Stored Cross-Site Scripting Vulnerability

A vulnerability in the web-based management interface of Cisco Vision Dynamic Signage Director could allow an authenticated, remote attacker with administrative privileges to conduct a cross-site scripting XSS attack against a user of the interface on an affected device. The vulnerability exists...

Cisco Data Center Network Manager Path Traversal Vulnerability

A vulnerability in a certain REST API endpoint of Cisco Data Center Network Manager DCNM Software could allow an authenticated, remote attacker to perform a path traversal attack on an affected device. The vulnerability is due to insufficient path restriction enforcement. An attacker could exploi...

Cisco AMP for Endpoints and ClamAV Privilege Escalation Vulnerability

A vulnerability in the endpoint software of Cisco AMP for Endpoints and Clam AntiVirus could allow an authenticated, local attacker to cause the running software to delete arbitrary files on the system. The vulnerability is due to a race condition that could occur when scanning malicious files. A...

Cisco Email Security Appliance URL Filtering Bypass Vulnerability

A vulnerability in the antispam protection mechanisms of Cisco AsyncOS Software for Cisco Email Security Appliance ESA could allow an unauthenticated, remote attacker to bypass the URL reputation filters on an affected device. The vulnerability is due to insufficient input validation of URLs. An...

Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services Information Disclosure Vulnerability

A vulnerability in the web services interface of Cisco Adaptive Security Appliance ASA Software and Cisco Firepower Threat Defense FTD Software could allow an unauthenticated, remote attacker to retrieve memory contents on an affected device, which could lead to the disclosure of confidential...

Cisco NX-OS Software IPv6 Denial of Service Vulnerability

A vulnerability in the IPv6 traffic processing of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause an unexpected restart of the netstack process on an affected device. The vulnerability is due to improper validation of IPv6 traffic sent through an affected device. An...

Cisco Nexus 9000 Series Fabric Switches ACI Mode Border Leaf Endpoint Learning Vulnerability

A vulnerability within the Endpoint Learning feature of Cisco Nexus 9000 Series Switches running in Application Centric Infrastructure ACI mode could allow an unauthenticated, remote attacker to cause a denial of service DoS condition on an endpoint device in certain circumstances. The...

Cisco Expressway Series Directory Traversal Vulnerability

A vulnerability in the management web interface of Cisco Expressway Series could allow an authenticated, remote attacker to perform a directory traversal attack against an affected device. The vulnerability is due to insufficient input validation on the web interface. An attacker could exploit th...

Cisco Application Policy Infrastructure Controller Web-Based Management Interface Cross-Site Scripting Vulnerability

A vulnerability in the web-based management interface of Cisco Application Policy Infrastructure Controller APIC could allow an authenticated, remote attacker to conduct a cross-site scripting XSS attack against a user of the web-based management interface of an affected device. The vulnerability...

Cisco Prime Collaboration Provisioning Cleartext Passwords Written to World-Readable File Vulnerability

A vulnerability in the web portal authentication process of Cisco Prime Collaboration Provisioning could allow an unauthenticated, local attacker to view sensitive data. The vulnerability is due to improper logging of authentication data. An attacker could exploit this vulnerability by monitoring...

Cisco IOS XE Software Authentication, Authorization, and Accounting Login Authentication Remote Code Execution Vulnerability

A vulnerability in the authentication, authorization, and accounting AAA security services of Cisco IOS XE Software could allow an unauthenticated, remote attacker to execute arbitrary code on an affected device or cause an affected device to reload, resulting in a denial of service DoS condition...

Cisco Unified Communications Manager HTTP Interface Information Disclosure Vulnerability

A vulnerability in the web framework of Cisco Unified Communications Manager could allow an authenticated, remote attacker to view sensitive data. The vulnerability is due to insufficient protection of database tables over the web interface. An attacker could exploit this vulnerability by browsin...

Cisco NX-OS System Software Management Interface Denial of Service Vulnerability

A vulnerability in management interface access control list ACL configuration of Cisco NX-OS System Software could allow an unauthenticated, remote attacker to bypass configured ACLs on the management interface. This could allow traffic to be forwarded to the NX-OS CPU for processing, leading to...