Cisco vulnerabilities being exploited
21 Cisco flaws were confirmed exploited in the wild in the past 365 days, 2 used in ransomware, across 14 products: Catalyst SD-WAN, Catalyst SD-WAN Controller and Manager, Catalyst SD-WAN Manager, Catalyst SD-WAN Manger, IOS, Identity Services Engine, Multiple Products, SD-WAN and more. If you run any of them, patch these first.
| Added | Exploited vulnerability | Fix by |
|---|---|---|
| 2026-10-29 | CVE-2026-76418 Secure Firewall ASA Software and Cisco Secure FTD Software Cisco Secure Firewall ASA Software and Cisco Secure FTD Software Unchecked Return Value to NULL Pointer Dereference Vulnerability Cisco Secure Firewall ASA Software and Cisco Secure FTD Software contains an unchecked return value to NULL pointer dereference vulnerability that could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition. | 2026-11-01 |
| 2026-10-14 | CVE-2026-76519 Secure Email Gateway Cisco Secure Email Gateway Relative Path Traversal Vulnerability Cisco Secure Email Gateway contains a relative path traversal vulnerability that could allow an unauthenticated, remote attacker to write arbitrary files on the underlying operating system. | 2026-10-17 |
| 2026-09-30 | CVE-2026-76504 Catalyst SD-WAN Manager Cisco Catalyst SD-WAN Manager Hex Encoding Vulnerability Cisco Catalyst SD-WAN Manager contains a hex encoding vulnerability that could allow an unauthenticated, remote attacker to access an affected system with privileges of the admin user due to improper handling of URI encoding in an HTTP request. | 2026-10-03 |
| 2026-09-16 | CVE-2026-76460 Identity Services Engine Cisco Identity Services Engine Incorrect Use of Privileged APIs Vulnerability Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) contain an incorrect use of privileged APIs vulnerability that could allow an unauthenticated, remote attacker to gain unauthorized access to the affected device by bypassing the web-based management interface. | 2026-09-19 |
| 2026-09-14 | CVE-2026-76461 Secure Email Gateway Cisco Secure Email Gateway SQL Injection Vulnerability Cisco AsyncOS software for Cisco Secure Email Gateway (SEG) contains a SQL injection vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary commands with root privileges on the underlying operating system. | 2026-09-17 |
| 2026-09-09 | CVE-2026-20079 Secure Firewall Management Center (FMC) and Security Cloud Control (SCC) Firewall Management Cisco Firewall Management Center Authentication Bypass Using an Alternate Path or Channel Vulnerability Cisco Secure Firewall Management Center (FMC) Software and Cisco Security Cloud Control (SCC) Firewall Management contain an authentication Bypass using an alternate path or channel vulnerability that could allow an unauthenticated, remote attacker to bypass authentication and execute script files on an affected device to obtain root access to the underlying operating system. | 2026-09-12 |
| 2026-08-11 | CVE-2026-20349 Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Heap Inspection Vulnerability Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) contain a heap inspection vulnerability that could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition. | 2026-08-14 |
| 2026-07-29 | CVE-2026-20316 Secure Firewall Management Center (FMC) ransomwareCisco Secure Firewall Management Center Use of Hard-coded Password Vulnerability Cisco Secure Firewall Management Center (FMC) formerly known as Firepower Management Center contains a use of hard-coded password vulnerability that could allow an unauthenticated, remote attacker to log in to an affected device using a low-privileged account to access sensitive data within the impacted systems. | 2026-08-01 |
| 2026-07-13 | CVE-2008-4128 IOS Cisco IOS Cross-Site Request Forgery Vulnerability Cisco IOS 12.4 contains multiple cross-site forgery vulnerabilities that allows remote attackers to execute arbitrary commands via (1) a certain "show privilege" command to the /level/15/exec/- URI, and (2) a certain "alias exec" command to the /level/15/exec/-/configure/http URI. | 2026-07-16 |
| 2026-06-25 | CVE-2026-20230 Unified Communications Manager Cisco Unified Communications Manager Server-Side Request Forgery (SSRF) Vulnerability Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) contain a server-side request forgery (SSRF) Vulnerability that could allow an unauthenticated, remote attacker to write files to the underlying operating system that could be used later to elevate to root. | 2026-06-28 |
| 2026-06-15 | CVE-2026-20262 Catalyst SD-WAN Manager Cisco Catalyst SD-WAN Manager Directory or Path Traversal Vulnerability Cisco Catalyst SD-WAN Manager contains a directory or path traversal vulnerability that could allow an authenticated, remote attacker to create a file or overwrite any file on the filesystem of an affected system. | 2026-06-29 |
| 2026-06-09 | CVE-2026-20245 Catalyst SD-WAN Manager Cisco Catalyst SD-WAN Manager Improper Encoding or Escaping of Output Vulnerability Cisco Catalyst SD-WAN Manager formerly SD-WAN vManage contains an improper encoding or escaping of output vulnerability. This vulnerability could allow an authenticated, local attacker to execute arbitrary commands as root by supplying a crafted file to the affected system. | 2026-06-23 |
| 2026-05-14 | CVE-2026-20182 Catalyst SD-WAN Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability Cisco Catalyst SD-WAN Controller & Manager contain an authentication bypass vulnerability that allows an unauthenticated, remote attacker to bypass authentication and obtain administrative privileges on an affected system. | 2026-05-17 |
| 2026-04-20 | CVE-2026-20133 Catalyst SD-WAN Manager Cisco Catalyst SD-WAN Manager Exposure of Sensitive Information to an Unauthorized Actor Vulnerability Cisco Catalyst SD-WAN Manager contains an exposure of sensitive information to an unauthorized actor vulnerability that could allow remote attackers to view sensitive information on affected systems. | 2026-04-23 |
| 2026-04-20 | CVE-2026-20128 Catalyst SD-WAN Manager Cisco Catalyst SD-WAN Manager Storing Passwords in a Recoverable Format Vulnerability Cisco Catalyst SD-WAN Manager contains a storing passwords in a recoverable format vulnerability that allows an authenticated, local attacker to gain DCA user privileges by accessing a credential file for the DCA user on the filesystem as a low-privileged user. | 2026-04-23 |
| 2026-04-20 | CVE-2026-20122 Catalyst SD-WAN Manger Cisco Catalyst SD-WAN Manager Incorrect Use of Privileged APIs Vulnerability Cisco Catalyst SD-WAN Manager contains an incorrect use of privileged APIs vulnerability due to improper file handling on the API interface of an affected system. An attacker could exploit this vulnerability by uploading a malicious file on the local file system. A successful exploit could allow the attacker to overwrite arbitrary files on the affected system and gain vmanage user privileges. | 2026-04-23 |
| 2026-03-19 | CVE-2026-20131 Secure Firewall Management Center (FMC) ransomwareCisco Secure Firewall Management Center (FMC) Software and Cisco Security Cloud Control (SCC) Firewall Management Deserialization of Untrusted Data Vulnerability Cisco Secure Firewall Management Center (FMC) Software and Cisco Security Cloud Control (SCC) Firewall Management contain a deserialization of untrusted data vulnerability in the web-based management interface that could allow an unauthenticated, remote attacker to execute arbitrary Java code as root on an affected device. | 2026-03-22 |
| 2026-02-25 | CVE-2026-20127 Catalyst SD-WAN Controller and Manager Cisco Catalyst SD-WAN Controller and Manager Authentication Bypass Vulnerability Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, and Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, contain an authentication bypass vulnerability could allow an unauthenticated, remote attacker to bypass authentication and obtain administrative privileges on an affected system. This vulnerability exists because the peering authentication mechanism in an affected system is not working properly. An attacker could exploit this vulnerability by sending crafted requests to an affected system. A successful exploit could allow the attacker to log in to an affected Cisco Catalyst SD-WAN Controller as an internal, high-privileged, non-root user account. Using this account, the attacker could access NETCONF, which would then allow the attacker to manipulate network configuration for the SD-WAN fabric. | 2026-02-27 |
| 2026-02-25 | CVE-2022-20775 SD-WAN Cisco SD-WAN Path Traversal Vulnerability Cisco SD-WAN CLI contains a path traversal vulnerability that could allow an authenticated local attacker to gain elevated privileges via improper access controls on commands within the application CLI. A successful exploit could allow the attacker to execute arbitrary commands as the root user. | 2026-02-27 |
| 2026-01-21 | CVE-2026-20045 Unified Communications Manager Cisco Unified Communications Products Code Injection Vulnerability Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager Session Management Edition (Unified CM SME), Cisco Unified Communications Manager IM & Presence Service (Unified CM IM&P), Cisco Unity Connection, and Cisco Webex Calling Dedicated Instance contain a code injection vulnerability that could allow the attacker to obtain user-level access to the underlying operating system and then elevate privileges to root. | 2026-02-11 |
| 2025-12-17 | CVE-2025-20393 Multiple Products Cisco Multiple Products Improper Input Validation Vulnerability Cisco Secure Email Gateway, Secure Email, AsyncOS Software, and Web Manager appliances contains an improper input validation vulnerability that allows threat actors to execute arbitrary commands with root privileges on the underlying operating system of an affected appliance. | 2025-12-24 |
Source: CISA Known Exploited Vulnerabilities catalog 2026.10.29 (live). A listing means some versions are affected: check yours in the advisory. Guidance only.