Cisco Ios
329 CVEs affecting Cisco Ios. Latest disclosed: 2026-03-25. Critical: 1, High: 63.
| CVE | Severity | Score | Published | Summary |
|---|---|---|---|---|
CVE-2025-20363 | Critical | 9.0 | 2025-09-25 | A vulnerability in the web services of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software, Cisco Secure Firewall Threat Defense (FTD) Software, C… |
CVE-2017-6744 | High | 8.8 | 2017-07-17 | The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS and IOS XE Software contains multiple vulnerabilities that could allow an authenticated, r… |
CVE-2017-6743 | High | 8.8 | 2017-07-17 | The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS and IOS XE Software contains multiple vulnerabilities that could allow an authenticated, r… |
CVE-2017-6740 | High | 8.8 | 2017-07-17 | The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS and IOS XE Software contains multiple vulnerabilities that could allow an authenticated, r… |
CVE-2017-6738 | High | 8.8 | 2017-07-17 | The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS and IOS XE Software contains multiple vulnerabilities that could allow an authenticated, r… |
CVE-2017-6737 | High | 8.8 | 2017-07-17 | A vulnerability in the SNMP implementation of could allow an authenticated, remote attacker to cause a reload of the affected system or to remotely execute cod… |
CVE-2017-6736 | High | 8.8 | 2017-07-17 | The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS and IOS XE Software contains multiple vulnerabilities that could allow an authenticated, r… |
CVE-2026-20012 | High | 8.6 | 2026-03-25 | A vulnerability in the Internet Key Exchange version 2 (IKEv2) feature of Cisco IOS Software, Cisco IOS XE Software, Cisco Secure Firewall Adaptive Security Ap… |
CVE-2025-20239 | High | 8.6 | 2025-08-14 | A vulnerability in the Internet Key Exchange Version 2 (IKEv2) feature of Cisco IOS Software, IOS XE Software, Secure Firewall Adaptive Security Appliance (ASA… |
CVE-2024-20433 | High | 8.6 | 2024-09-25 | A vulnerability in the Resource Reservation Protocol (RSVP) feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote atta… |
CVE-2024-20308 | High | 8.6 | 2024-03-27 | A vulnerability in the IKEv1 fragmentation code of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a heap… |
CVE-2024-20311 | High | 8.6 | 2024-03-27 | A vulnerability in the Locator ID Separation Protocol (LISP) feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote att… |
CVE-2017-3863 | High | 8.6 | 2017-04-20 | Multiple vulnerabilities in the EnergyWise module of Cisco IOS (12.2 and 15.0 through 15.6) and Cisco IOS XE (3.2 through 3.18) could allow an unauthenticated… |
CVE-2017-3862 | High | 8.6 | 2017-04-20 | Multiple vulnerabilities in the EnergyWise module of Cisco IOS (12.2 and 15.0 through 15.6) and Cisco IOS XE (3.2 through 3.18) could allow an unauthenticated… |
CVE-2017-3861 | High | 8.6 | 2017-04-20 | Multiple vulnerabilities in the EnergyWise module of Cisco IOS (12.2 and 15.0 through 15.6) and Cisco IOS XE (3.2 through 3.18) could allow an unauthenticated… |
CVE-2017-3860 | High | 8.6 | 2017-04-20 | Multiple vulnerabilities in the EnergyWise module of Cisco IOS (12.2 and 15.0 through 15.6) and Cisco IOS XE (3.2 through 3.18) could allow an unauthenticated… |
CVE-2017-3864 | High | 8.6 | 2017-03-22 | A vulnerability in the DHCP client implementation of Cisco IOS (12.2, 12.4, and 15.0 through 15.6) and Cisco IOS XE (3.3 through 3.7) could allow an unauthenti… |
CVE-2025-20164 | High | 8.3 | 2025-05-07 | A vulnerability in the Cisco Industrial Ethernet Switch Device Manager (DM) of Cisco IOS Software could allow an authenticated, remote attacker to elevate priv… |
CVE-2025-20160 | High | 8.1 | 2025-09-24 | A vulnerability in the implementation of the TACACS+ protocol in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker t… |
CVE-2016-6380 | High | 8.1 | 2016-10-05 | The DNS forwarder in Cisco IOS 12.0 through 12.4 and 15.0 through 15.6 and IOS XE 3.1 through 3.15 allows remote attackers to obtain sensitive information from… |