Cisco security advisories, March 2026

Every Cisco security advisory published in March 2026, from Cisco Security Advisories, with its severity, CVEs and CISA KEV status. Open a record for affected and fixed versions and the vendor's own link.

Advisories: 43
Critical: 2
High: 14
In CISA KEV: 2
CVEs: 68

Cisco advisories published in March 2026

Mar 25, 2026
High [CVE-2026-20004] Cisco IOS XE Software TLS Memory Exhaustion Denial of Service Vulnerability
High7.4
Mar 25, 2026
High [CVE-2026-20086] Cisco IOS XE Wireless Controller Software for the Catalyst CW9800 Family CAPWAP Denial of Service Vulnerability
High8.6
Mar 25, 2026
High [CVE-2026-20084] Cisco IOS XE Software for Catalyst 9000 Series Switches DHCP Snooping Denial of Service Vulnerability
High8.6
Mar 25, 2026
High [CVE-2026-20125] Cisco IOS Software and IOS XE Software Release 3E HTTP Server Denial of Service Vulnerability
High7.7
Mar 25, 2026
High [CVE-2026-20012] Cisco IOS, IOS XE, Secure Firewall Adaptive Security Appliance, and Secure Firewall Threat Defense Software IKEv2 Denial of Service Vulnerability
High8.6
Mar 25, 2026
Medium [CVE-2026-20083] Cisco IOS XE Software Secure Copy Protocol Server Denial of Service Vulnerability
Medium6.5
Mar 25, 2026
Medium [CVE-2026-20104] Cisco IOS XE Software for Cisco Catalyst and Rugged Series Switches Secure Boot Bypass Vulnerability
Medium6.1
Mar 25, 2026
Medium [CVE-2026-20115] Cisco IOS XE Software Secure Channel for Meraki Information Disclosure Vulnerability
Medium6.1
Mar 25, 2026
Medium [CVE-2026-20113] Cisco IOx Application Hosting Environment Carriage Return Line Feed Injection Vulnerability
Medium5.3
Mar 25, 2026
Medium [CVE-2026-20112] Cisco IOx Application Hosting Environment Stored Cross-Site Scripting Vulnerability
Medium4.8
Mar 25, 2026
Medium [CVE-2026-20108] Cisco Catalyst SD-WAN Manager Cross-Site Scripting Vulnerability
Medium5.4
Mar 25, 2026
Medium [CVE-2026-20114] Cisco IOS XE Software Lobby Ambassador Privilege Escalation Vulnerability
Medium5.4
Mar 11, 2026
High [CVE-2026-20040 +1] Cisco IOS XR Software CLI Privilege Escalation Vulnerabilities
High8.8
Mar 11, 2026
High [CVE-2026-20074] Cisco IOS XR Software Multi-Instance Intermediate System-to-Intermediate System Denial of Service Vulnerability
High7.4
Mar 11, 2026
Medium [CVE-2026-20116 +1] Multiple Cisco Contact Center Products Cross-Site Scripting Vulnerabilities
Medium6.1
Mar 11, 2026
Medium [CVE-2026-20118] Cisco IOS XR Egress Packet Network Interface Aligner Interrupt Denial of Service Vulnerability
Medium6.8Exploited
Mar 4, 2026
Critical [CVE-2026-20131] Cisco Secure Firewall Management Center Software Remote Code Execution Vulnerability
Critical10.0ExploitedCISA KEV
Mar 4, 2026
Critical [CVE-2026-20079] Cisco Secure Firewall Management Center Software Authentication Bypass Vulnerability
Critical10.0ExploitedCISA KEV
Mar 4, 2026
High [CVE-2026-20049] Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software IPsec Denial of Service Vulnerability
High7.7
Mar 4, 2026
High [CVE-2026-20039] Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software VPN Web Server Denial of Service Vulnerability
High8.6
Mar 4, 2026
High [CVE-2026-20100 +4] Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Remote Access SSL VPN Denial of Service Vulnerabilities
High8.6
Mar 4, 2026
High [CVE-2026-20082] Cisco Secure Firewall Adaptive Security Appliance Software TCP Flood Denial of Service Vulnerability
High8.6
Mar 4, 2026
High [CVE-2026-20062] Cisco Secure Firewall Adaptive Security Appliance Software Multiple Context Mode SCP Unauthorized File Access Vulnerability
High7.2
Mar 4, 2026
High [CVE-2026-20001 +2] Cisco Secure Firewall Management Center Software SQL Injection Vulnerabilities
High8.1
Mar 4, 2026
High [CVE-2026-20013 +2] Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software IKEv2 Denial of Service Vulnerabilities
High7.7
Mar 4, 2026
Medium [CVE-2026-20005 +4] Multiple Cisco Products Snort 3 Denial of Service Vulnerabilities
Medium5.8
Mar 4, 2026
Medium [CVE-2026-20009] Cisco Secure Firewall Adaptive Security Appliance Software SSH Partial Private Key Authentication Bypass Vulnerability
Medium5.3
Mar 4, 2026
Medium [CVE-2026-20052] Cisco Secure Firewall Threat Defense Software Snort 3 SSL Memory Management Denial of Service Vulnerability
Medium5.8
Mar 4, 2026
Medium [CVE-2026-20050] Cisco Secure Firewall Threat Defense Software SSL Decryption Policy Denial of Service Vulnerability
Medium6.8
Mar 4, 2026
Medium [CVE-2026-20006] Cisco Secure Firewall Threat Defense Software TLS with Snort 3 Detection Engine Denial of Service Vulnerability
Medium5.8
Mar 4, 2026
Medium [CVE-2026-20020 +5] Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software OSPF Protocol Vulnerabilities
Medium6.8
Mar 4, 2026
Medium [CVE-2026-20007] Cisco Secure Firewall Threat Defense Software Snort Deep Inspection Bypass Vulnerability
Medium5.8
Mar 4, 2026
Medium [CVE-2026-20008] Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Lua Code Injection Vulnerability
Medium6.0
Mar 4, 2026
Medium [CVE-2026-20102] Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software SAML Reflected Cross-Site Scripting Vulnerability
Medium6.1
Mar 4, 2026
Medium [CVE-2026-20073] Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Access Control List Bypass Vulnerability
Medium5.8
Mar 4, 2026
Medium [CVE-2026-20070] Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software VPN Web Services Cross-Site Scripting Vulnerability
Medium6.1
Mar 4, 2026
Medium [CVE-2026-20069] Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software VPN Web Services Client-Side Request Smuggling Vulnerability
Medium4.3
Mar 4, 2026
Medium [CVE-2026-20149] Cisco Webex Services Cross-Site Scripting Vulnerability
Medium6.1
Mar 4, 2026
Medium [CVE-2026-20044] Cisco Secure Firewall Management Center Software Command Injection Vulnerability
Medium6.0
Mar 4, 2026
Medium [CVE-2026-20016 +3] Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Authenticated Command Injection Vulnerabilities
Medium6.5
Mar 4, 2026
Medium [CVE-2026-20031] ClamAV Cascading Style Sheets Image Parsing Error Handling Denial of Service Vulnerability
Medium5.3
Mar 4, 2026
Medium [CVE-2026-20018] Cisco Secure Firewall Management Center and Secure Firewall Threat Defense Software Path Traversal Vulnerability
Medium5.9
Mar 4, 2026
Medium [CVE-2026-20053 +3] Multiple Cisco Products Snort 3 Visual Basic for Applications Denial of Service Vulnerabilities
Medium5.8

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Dates are each advisory's publication date at the source, in UTC; a record with no source date is filed under the day VulniPulse first saw it.