Cisco Security Advisories & CVEs
97 advisories tracked · Cisco Security Advisories · direct feeds checked every minute; rate-limited backstops use a safe source cadence
Android app · Google Play
Monitor Cisco CVEs from your phone.
Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 32 official vendor sources and 160+ reviewed platform categories.
Check if your Cisco device is affected
Pick your device's OS (and platform, where it matters), choose the software release it runs, and we'll check it against Cisco's recent security advisories — the same data behind the Cisco Software Checker.
Official source
Cisco Security Advisories
Polled via the official Cisco PSIRT RSS feed. Advisory pages are fetched for new items to extract fixed software and workarounds.
Latest Cisco advisories
Medium [CVE-2025-20204 +1] Cisco Identity Services Engine Stored Cross-Site Scripting Vulnerabilities
Multiple vulnerabilities in the web-based management interface of Cisco Identity Services Engine (ISE) guest portals could allow an authenticated, remote attacker to conduct cross-site scripting (XSS) attacks against a user of the interface. These vulnerabilities are due to insufficient validation of user-supplied input by the web-based management interface of an affected system. An attacker could exploit these vulnerabilities by injecting malicious code into specific pages of the interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information. To exploit these vulnerabilities, the attacker must have valid administrative credentials. Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities. Affected product named by the advisory: Cisco Identity Services Engine Software.
Medium [CVE-2026-20085 +4] Cisco Integrated Management Controller Cross-Site Scripting Vulnerabilities
Multiple vulnerabilities in the web-based management interface of Cisco Integrated Management Controller (IMC) could allow a remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. For more information about these vulnerabilities, see the Details section of this advisory. Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities. Affected products named by the advisory: Unified Computing System (Standalone); Unified Computing System E-Series Software (UCSE); Enterprise NFV Infrastructure Software.
Medium [CVE-2026-20152] Cisco Secure Web Appliance Authentication Bypass Vulnerability
A vulnerability in the authentication service feature of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to bypass authentication policy requirements. This vulnerability is due to improper validation of user-supplied authentication input in HTTP requests. An attacker could exploit this vulnerability by sending HTTP requests that contain specific authentication requests to an affected device. A successful exploit could allow the attacker to bypass policy enforcement on the device. There is no direct impact to the Cisco Secure Web Appliance. However, as a result of exploiting this vulnerability, an attacker could send HTTP requests that should be restricted through the device. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
Medium [CVE-2026-20136] Cisco Identity Services Engine Authenticated Privilege Escalation Vulnerability
A vulnerability in the CLI of Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) could allow an authenticated, local attacker with administrative privileges to perform a command injection attack on the underlying operating system and elevate privileges to root. This vulnerability is due to insufficient validation of user supplied input. An attacker could exploit this vulnerability by providing crafted input to a specific CLI command. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. Affected products named by the advisory: Identity Services Engine Software.
Medium [CVE-2026-20132] Cisco Identity Services Engine Multiple Cross-Site Scripting Vulnerabilities
Multiple vulnerabilities in the web-based management interface of Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker with administrative write privileges to conduct a stored cross-site scripting (XSS) attack or a reflected XSS attack against a user of the web-based management interface of an affected device. These vulnerabilities are due to insufficient sanitization of user-supplied data that is stored in the web page. An attacker could exploit these vulnerabilities by convincing a user of the interface to click a specific link or view an affected web page. The injected script code may be executed in the context of the web-based management interface or allow the attacker to access sensitive browser-based information. Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities. Affected products named by the advisory: Identity Services Engine Software.
Medium [CVE-2026-20161] Cisco ThousandEyes Enterprise Agent Arbitrary File Overwrite Vulnerability
A vulnerability in the CLI of Cisco ThousandEyes Enterprise Agent could allow an authenticated, local attacker with low privileges to overwrite arbitrary files on the local system of an affected device. This vulnerability is due to improper access controls on files that are on the local file system of an affected device. An attacker could exploit this vulnerability by placing a symbolic link in a specific location on the local file system. A successful exploit could allow the attacker to bypass file system permissions and overwrite arbitrary files on the affected device. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
Medium [CVE-2026-20078 +1] Cisco Unity Connection Arbitrary File Download Vulnerabilities
Multiple vulnerabilities in Cisco Unity Connection could allow an authenticated, remote attacker to download arbitrary files from an affected system. To exploit these vulnerabilities, the attacker must have valid administrative credentials. These vulnerabilities are due to improper sanitization of user input to the web-based management interface. An attacker could exploit these vulnerabilities by sending a crafted HTTPS request. A successful exploit could allow the attacker to download arbitrary files from an affected system. Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.
Medium [CVE-2026-20059 +2] Cisco Unity Connection Cross-Site Scripting, Open Redirect, and SQL Injection Vulnerabilities
Multiple vulnerabilities in Cisco Unity Connection could allow a remote attacker to conduct a cross-site scripting (XSS) attack, an open redirect attack, and an SQL injection attack. For more information about these vulnerabilities, see the Details section of this advisory. Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.
Medium [CVE-2026-20170] Cisco Webex Contact Center Cross-Site Scripting Vulnerability
A vulnerability in the Desktop Agent functionality of Cisco Webex Contact Center could have allowed an unauthenticated, remote attacker to conduct cross-site scripting attacks. Cisco has addressed this vulnerability in the Cisco Webex Contact Center service, and no customer action is needed. This vulnerability existed because HTML and script content was not properly handled. Prior to this vulnerability being addressed, an attacker could have exploited this vulnerability by persuading a user to follow a malicious link. A successful exploit could have allowed the attacker to steal sensitive information from the browser, including authentication and session information. There are no workarounds that address this vulnerability.
Medium [CVE-2026-20110] Cisco IOS XE Software Denial of Service Vulnerability
A vulnerability in the CLI of Cisco IOS XE Software could allow an authenticated, local attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability exists because incorrect privileges are associated with the start maintenance command. An attacker could exploit this vulnerability by accessing the management CLI of the affected device as a low-privileged user and using the start maintenance command. A successful exploit could allow the attacker to put the device in maintenance mode, which shuts down interfaces, resulting in a denial of service (DoS) condition. In case of exploitation, a device administrator can connect to the CLI and use the stop maintenance command to restore operations. Cisco has released software updates that address this vulnerability. There are workarounds that address this vulnerability. This advisory is part of the March 2026 release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication.
Medium [CVE-2026-20041] Cisco Nexus Dashboard and Nexus Dashboard Insights Server-Side Request Forgery Vulnerability
A vulnerability in Cisco Nexus Dashboard and Cisco Nexus Dashboard Insights could allow an unauthenticated, remote attacker to conduct a server-side request forgery (SSRF) attack through an affected device. This vulnerability is due to improper input validation for specific HTTP requests. An attacker could exploit this vulnerability by persuading an authenticated user of the device management interface to click a crafted link. A successful exploit could allow the attacker to send arbitrary network requests that are sourced from the affected device to an attacker-controlled server. The attac…
Medium [CVE-2026-20042] Cisco Nexus Dashboard Configuration Backup REST API Unauthorized Access Vulnerability
A vulnerability in the configuration backup feature of Cisco Nexus Dashboard could allow an attacker who has the encryption password and access to Full or Config-only backup files to access sensitive information. This vulnerability exists because authentication details are included in the encrypted backup files. An attacker with a valid backup file and encryption password from an affected device could decrypt the backup file. The attacker could then use the authentication details in the backup file to access internal-only APIs on the affected device. A successful exploit could allow the att…
Medium [CVE-2026-20174] Cisco Nexus Dashboard Insights Arbitrary File Write Vulnerability
A vulnerability in the Metadata update feature of Cisco Nexus Dashboard Insights could allow an authenticated, remote attacker to write arbitrary files to an affected system. This vulnerability is due to insufficient validation of the metadata update file.
Medium [CVE-2026-20083] Cisco IOS XE Software Secure Copy Protocol Server Denial of Service Vulnerability
A vulnerability in the Secure Copy Protocol (SCP) server feature of Cisco IOS XE Software could allow an authenticated, local attacker with low privileges to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper handling of a malformed SCP request. An attacker could exploit this vulnerability by issuing a crafted command through SSH. A successful exploit could allow the attacker to cause the device to reload unexpectedly, resulting in a DoS condition. Cisco has released software updates that address this vulnerability. There are no workaround… Affected products named by the advisory: Cisco IOS XE Software 3.5.0E; Cisco IOS XE Software 3.5.1E; Cisco IOS XE Software 3.5.2E; Cisco IOS XE Software 3.5.3E; and 4 more.
Medium [CVE-2026-20104] Cisco IOS XE Software for Cisco Catalyst and Rugged Series Switches Secure Boot Bypass Vulnerability
A vulnerability in the bootloader of Cisco IOS XE Software for Cisco Catalyst 9200 Series Switches, Cisco Catalyst ESS9300 Embedded Series Switches, Cisco Catalyst IE9310 and IE9320 Rugged Series Switches, and Cisco IE3500 and IE3505 Rugged Series Switches could allow an authenticated, local attacker with level-15 privileges or an unauthenticated attacker with physical access to an affected device to execute arbitrary code at boot time and break the chain of trust. This vulnerability is due to insufficient validation of software at boot time. An attacker could exploit this vulnerability by … Affected products named by the advisory: Cisco IOS XE Software 16.12.8; Cisco IOS XE Software 16.12.6a; Cisco IOS XE Software 16.12.7; Cisco IOS XE Software 17.3.3; and 3 more.
Medium [CVE-2026-20115] Cisco IOS XE Software Secure Channel for Meraki Information Disclosure Vulnerability
A vulnerability in Cisco IOS XE Software for Cisco Meraki could allow a remote, unauthenticated attacker to view confidential device information. This vulnerability is due to a device configuration upload being performed over an insecure tunnel. An attacker could exploit this vulnerability by conducting an on-path attack between the affected device and the Cisco Meraki Dashboard. A successful exploit could allow the attacker to view sensitive device configuration information. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vuln… Affected products named by the advisory: Cisco IOS XE Software 17.14.1a; Cisco IOS XE Software 17.15.1w; Cisco IOS XE Software 17.15.1a; Cisco IOS XE Software 17.15.2; and 2 more.
Medium [CVE-2026-20113] Cisco IOx Application Hosting Environment Carriage Return Line Feed Injection Vulnerability
A vulnerability in the web-based Cisco IOx application hosting environment management interface of Cisco IOS XE Software could allow an unauthenticated, remote attacker to perform a carriage return line feed (CRLF) injection attack against a user. This vulnerability is due to insufficient validation of user input. An attacker could exploit this vulnerability by sending crafted packets to an affected device. A successful exploit could allow the attacker to arbitrarily inject log entries, manipulate the structure of log files, or obscure legitimate log events. Cisco has released software upda… Affected products named by the advisory: Cisco IOS XE Software 16.6.1; Cisco IOS XE Software 16.6.2; Cisco IOS XE Software 16.6.3; Cisco IOS XE Software 16.6.4s; and 2 more.
Medium [CVE-2026-20112] Cisco IOx Application Hosting Environment Stored Cross-Site Scripting Vulnerability
A vulnerability in the web-based Cisco IOx application hosting environment management interface of Cisco IOS XE Software could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user of the web-based management interface of an affected device. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by injecting malicious code into specific pages of the interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected in… Affected products named by the advisory: Cisco IOS XE Software 16.6.1; Cisco IOS XE Software 16.6.2; Cisco IOS XE Software 16.6.3; Cisco IOS XE Software 16.6.4s; and 2 more.
Medium [CVE-2026-20108] Cisco Catalyst SD-WAN Manager Cross-Site Scripting Vulnerability
A vulnerability in the web-based management interface of Cisco Catalyst SD-WAN Manager could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface of an affected device. This vulnerability is due to insufficient validation of user input. An attacker could exploit this vulnerability by persuading a user of the web-based management interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based informatio…
Medium [CVE-2026-20114] Cisco IOS XE Software Lobby Ambassador Privilege Escalation Vulnerability
A vulnerability in the Lobby Ambassador web-based management API of Cisco IOS XE Software could allow an authenticated, remote attacker to elevate their privileges and access management APIs that would not normally be available for Lobby Ambassador users. This vulnerability exists because parameters that are received by an API endpoint are not sufficiently validated. An attacker could exploit this vulnerability by authenticating as a Lobby Ambassador user and sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to create a new user with privile… Affected products named by the advisory: Cisco IOS XE Software 16.11.1a; Cisco IOS XE Software 16.11.1b; Cisco IOS XE Software 16.11.2; Cisco IOS XE Software 16.11.1s; and 2 more.