{"schema_version":1,"title":"Cisco IOS XR vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 30 vulnerabilities in Cisco IOS XR: 0 in the last 7 days and 1 in the last 90 days, 27 of them critical and 27 exploited in the wild. The most recent, CVE-2026-20278, was published on 2 September 2026.","url":"https://junglewise.ai/threats/technologies/ios-xr","json_url":"https://junglewise.ai/threats/technologies/ios-xr.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/ios-xr","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":3,"all_time":30,"critical":27,"exploited":27,"last_7_days":0,"last_30_days":1,"last_90_days":1,"last_365_days":4},"latest":[{"cve":"CVE-2026-20278","cvss":8.8,"epss":0.003,"slug":"cve-2026-20278-cisco-ios-xr-software-improper-neutralization-in-command","title":"Cisco IOS XR Software improper neutralization in command processing","severity":"high","exploited":false,"published_at":"2026-09-02T17:17:33.267+00:00","url":"https://junglewise.ai/threats/cve-2026-20278-cisco-ios-xr-software-improper-neutralization-in-command"},{"cve":"CVE-2026-20046","cvss":8.8,"epss":0.0014,"slug":"cve-2026-20046-cisco-ios-xr-software-privilege-escalation-in-task-group","title":"Cisco IOS XR Software privilege escalation in task group assignment","severity":"high","exploited":false,"published_at":"2026-03-11T17:16:55.23+00:00","url":"https://junglewise.ai/threats/cve-2026-20046-cisco-ios-xr-software-privilege-escalation-in-task-group"},{"cve":"CVE-2026-20040","cvss":8.8,"epss":0.0017,"slug":"cve-2026-20040-cisco-ios-xr-software-privilege-escalation-in-cli","title":"Cisco IOS XR Software privilege escalation in CLI","severity":"high","exploited":false,"published_at":"2026-03-11T17:16:54.747+00:00","url":"https://junglewise.ai/threats/cve-2026-20040-cisco-ios-xr-software-privilege-escalation-in-cli"},{"cve":"CVE-2025-20352","cvss":7.7,"epss":0.0364,"slug":"cve-2025-20352-cisco-ios-and-ios-xe-stack-overflow-in-snmp-subsystem","title":"Cisco IOS and IOS XE stack overflow in SNMP subsystem","severity":"critical","exploited":true,"published_at":"2025-09-29T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2025-20352-cisco-ios-and-ios-xe-stack-overflow-in-snmp-subsystem"},{"cve":"CVE-2023-20109","cvss":6.6,"slug":"cve-2023-20109-cisco-ios-and-ios-xe-group-encrypted-transport-vpn-out-of-bounds","title":"Cisco IOS and IOS XE Group Encrypted Transport VPN Out-of-Bounds Write Vulnerability","severity":"critical","exploited":true,"published_at":"2023-10-10T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2023-20109-cisco-ios-and-ios-xe-group-encrypted-transport-vpn-out-of-bounds"},{"cve":"CVE-2016-6415","cvss":7.5,"slug":"cve-2016-6415-cisco-ios-ios-xr-and-ios-xe-ikev1-information-disclosure","title":"Cisco IOS, IOS XR, and IOS XE IKEv1 Information Disclosure Vulnerability","severity":"critical","exploited":true,"published_at":"2023-05-19T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2016-6415-cisco-ios-ios-xr-and-ios-xe-ikev1-information-disclosure"},{"cve":"CVE-2004-1464","cvss":5.9,"slug":"cve-2004-1464-cisco-ios-denial-of-service-vulnerability","title":"Cisco IOS Denial-of-Service Vulnerability","severity":"critical","exploited":true,"published_at":"2023-05-19T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2004-1464-cisco-ios-denial-of-service-vulnerability"},{"cve":"CVE-2017-6742","cvss":8.8,"slug":"cve-2017-6742-cisco-ios-and-ios-xe-software-snmp-remote-code-execution","title":"Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability","severity":"critical","exploited":true,"published_at":"2023-04-19T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2017-6742-cisco-ios-and-ios-xe-software-snmp-remote-code-execution"},{"cve":"CVE-2022-20821","cvss":6.5,"slug":"cve-2022-20821-cisco-ios-xr-open-port-vulnerability","title":"Cisco IOS XR Open Port Vulnerability","severity":"critical","exploited":true,"published_at":"2022-05-23T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2022-20821-cisco-ios-xr-open-port-vulnerability"},{"cve":"CVE-2009-2055","cvss":5.9,"slug":"cve-2009-2055-cisco-ios-xr-border-gateway-protocol-bgp-denial-of-service","title":"Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service Vulnerability","severity":"critical","exploited":true,"published_at":"2022-03-25T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2009-2055-cisco-ios-xr-border-gateway-protocol-bgp-denial-of-service"},{"cve":"CVE-2017-3881","cvss":9.8,"slug":"cve-2017-3881-cisco-ios-and-ios-xe-remote-code-execution-vulnerability","title":"Cisco IOS and IOS XE Remote Code Execution Vulnerability","severity":"critical","exploited":true,"published_at":"2022-03-25T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2017-3881-cisco-ios-and-ios-xe-remote-code-execution-vulnerability"},{"cve":"CVE-2010-3035","cvss":7.5,"slug":"cve-2010-3035-cisco-ios-xr-border-gateway-protocol-bgp-denial-of-service","title":"Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service Vulnerability","severity":"critical","exploited":true,"published_at":"2022-03-25T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2010-3035-cisco-ios-xr-border-gateway-protocol-bgp-denial-of-service"},{"cve":"CVE-2017-6737","cvss":8.8,"slug":"cve-2017-6737-cisco-ios-and-ios-xe-software-snmp-remote-code-execution","title":"Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability","severity":"critical","exploited":true,"published_at":"2022-03-03T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2017-6737-cisco-ios-and-ios-xe-software-snmp-remote-code-execution"},{"cve":"CVE-2017-6738","cvss":8.8,"slug":"cve-2017-6738-cisco-ios-and-ios-xe-software-snmp-remote-code-execution","title":"Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability","severity":"critical","exploited":true,"published_at":"2022-03-03T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2017-6738-cisco-ios-and-ios-xe-software-snmp-remote-code-execution"},{"cve":"CVE-2017-6743","cvss":8.8,"slug":"cve-2017-6743-cisco-ios-and-ios-xe-software-snmp-remote-code-execution","title":"Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability","severity":"critical","exploited":true,"published_at":"2022-03-03T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2017-6743-cisco-ios-and-ios-xe-software-snmp-remote-code-execution"},{"cve":"CVE-2017-6663","cvss":6.5,"slug":"cve-2017-6663-cisco-ios-software-and-cisco-ios-xe-software-denial-of-service","title":"Cisco IOS Software and Cisco IOS XE Software Denial-of-Service Vulnerability","severity":"critical","exploited":true,"published_at":"2022-03-03T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2017-6663-cisco-ios-software-and-cisco-ios-xe-software-denial-of-service"},{"cve":"CVE-2017-6740","cvss":8.8,"slug":"cve-2017-6740-cisco-ios-and-ios-xe-software-snmp-remote-code-execution","title":"Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability","severity":"critical","exploited":true,"published_at":"2022-03-03T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2017-6740-cisco-ios-and-ios-xe-software-snmp-remote-code-execution"},{"cve":"CVE-2017-6739","cvss":8.8,"slug":"cve-2017-6739-cisco-ios-and-ios-xe-software-snmp-remote-code-execution","title":"Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability","severity":"critical","exploited":true,"published_at":"2022-03-03T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2017-6739-cisco-ios-and-ios-xe-software-snmp-remote-code-execution"},{"cve":"CVE-2018-0151","cvss":9.8,"slug":"cve-2018-0151-cisco-ios-software-and-cisco-ios-xe-software-quality-of-service","title":"Cisco IOS Software and Cisco IOS XE Software Quality of Service Remote Code Execution Vulnerability","severity":"critical","exploited":true,"published_at":"2022-03-03T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2018-0151-cisco-ios-software-and-cisco-ios-xe-software-quality-of-service"},{"cve":"CVE-2017-6627","cvss":7.5,"slug":"cve-2017-6627-cisco-ios-software-and-cisco-ios-xe-software-udp-packet-processing","title":"Cisco IOS Software and Cisco IOS XE Software UDP Packet Processing Denial-of-Service Vulnerability","severity":"critical","exploited":true,"published_at":"2022-03-03T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2017-6627-cisco-ios-software-and-cisco-ios-xe-software-udp-packet-processing"},{"cve":"CVE-2017-6736","cvss":8.8,"slug":"cve-2017-6736-cisco-ios-and-ios-xe-software-snmp-remote-code-execution","title":"Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability","severity":"critical","exploited":true,"published_at":"2022-03-03T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2017-6736-cisco-ios-and-ios-xe-software-snmp-remote-code-execution"},{"cve":"CVE-2017-12240","cvss":9.8,"slug":"cve-2017-12240-cisco-ios-and-ios-xe-software-dhcp-remote-code-execution","title":"Cisco IOS and IOS XE Software DHCP Remote Code Execution Vulnerability","severity":"critical","exploited":true,"published_at":"2022-03-03T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2017-12240-cisco-ios-and-ios-xe-software-dhcp-remote-code-execution"},{"cve":"CVE-2018-0175","cvss":8,"slug":"cve-2018-0175-cisco-ios-xr-and-xe-software-buffer-overflow-vulnerability","title":"Cisco IOS, XR, and XE Software Buffer Overflow Vulnerability","severity":"critical","exploited":true,"published_at":"2022-03-03T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2018-0175-cisco-ios-xr-and-xe-software-buffer-overflow-vulnerability"},{"cve":"CVE-2017-12237","cvss":7.5,"slug":"cve-2017-12237-cisco-ios-and-ios-xe-software-internet-key-exchange-denial-of","title":"Cisco IOS and IOS XE Software Internet Key Exchange Denial-of-Service Vulnerability","severity":"critical","exploited":true,"published_at":"2022-03-03T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2017-12237-cisco-ios-and-ios-xe-software-internet-key-exchange-denial-of"},{"cve":"CVE-2018-0173","cvss":8.6,"slug":"cve-2018-0173-cisco-ios-and-ios-xe-software-improper-input-validation","title":"Cisco IOS and IOS XE Software Improper Input Validation Vulnerability","severity":"critical","exploited":true,"published_at":"2022-03-03T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2018-0173-cisco-ios-and-ios-xe-software-improper-input-validation"}],"weekly":[{"week":"2026-06-29","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":1},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0}],"related":[{"name":"Cisco IOS","slug":"ios","vulnerabilities":69,"url":"https://junglewise.ai/threats/technologies/ios"},{"name":"Cisco IOS XE","slug":"ios-xe","vulnerabilities":53,"url":"https://junglewise.ai/threats/technologies/ios-xe"},{"name":"Cisco Identity Services Engine","slug":"identity-services-engine","vulnerabilities":51,"url":"https://junglewise.ai/threats/technologies/identity-services-engine"},{"name":"Cisco Firepower Threat Defense Software","slug":"firepower-threat-defense-software","vulnerabilities":32,"url":"https://junglewise.ai/threats/technologies/firepower-threat-defense-software"},{"name":"Cisco IOS XE Software","slug":"ios-xe-software","vulnerabilities":27,"url":"https://junglewise.ai/threats/technologies/ios-xe-software"},{"name":"Cisco Firepower Threat Defense","slug":"firepower-threat-defense","vulnerabilities":22,"url":"https://junglewise.ai/threats/technologies/firepower-threat-defense"},{"name":"Cisco Adaptive Security Appliance Software","slug":"secure-firewall-asa-software","vulnerabilities":22,"url":"https://junglewise.ai/threats/technologies/secure-firewall-asa-software"},{"name":"Cisco Ios Software","slug":"ios-software","vulnerabilities":19,"url":"https://junglewise.ai/threats/technologies/ios-software"},{"name":"Cisco ISE Passive Identity Connector","slug":"ise-passive-identity-connector","vulnerabilities":19,"url":"https://junglewise.ai/threats/technologies/ise-passive-identity-connector"},{"name":"Cisco Secure Firewall Management Center","slug":"secure-firewall-management-center","vulnerabilities":16,"url":"https://junglewise.ai/threats/technologies/secure-firewall-management-center"},{"name":"Cisco Catalyst SD-WAN Manager","slug":"catalyst-sd-wan-manager","vulnerabilities":12,"url":"https://junglewise.ai/threats/technologies/catalyst-sd-wan-manager"},{"name":"Cisco Adaptive Security Appliance (ASA)","slug":"adaptive-security-appliance-asa","vulnerabilities":10,"url":"https://junglewise.ai/threats/technologies/adaptive-security-appliance-asa"}],"technology":{"hub":true,"name":"Cisco IOS XR","slug":"ios-xr","vendor":{"name":"Cisco","slug":"cisco","url":"https://junglewise.ai/threats/vendors/cisco"},"aliases":[],"category":"operating-system","homepage":"https://www.cisco.com/c/en/us/products/ios-nx-os-software/ios-xr-software/index.html","description":"A network operating system designed for high-availability service provider routers and networking equipment.","url":"https://junglewise.ai/threats/technologies/ios-xr"},"most_severe":[{"cve":"CVE-2017-3881","cvss":9.8,"slug":"cve-2017-3881-cisco-ios-and-ios-xe-remote-code-execution-vulnerability","title":"Cisco IOS and IOS XE Remote Code Execution Vulnerability","severity":"critical","exploited":true,"published_at":"2022-03-25T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2017-3881-cisco-ios-and-ios-xe-remote-code-execution-vulnerability"},{"cve":"CVE-2018-0151","cvss":9.8,"slug":"cve-2018-0151-cisco-ios-software-and-cisco-ios-xe-software-quality-of-service","title":"Cisco IOS Software and Cisco IOS XE Software Quality of Service Remote Code Execution Vulnerability","severity":"critical","exploited":true,"published_at":"2022-03-03T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2018-0151-cisco-ios-software-and-cisco-ios-xe-software-quality-of-service"},{"cve":"CVE-2017-12240","cvss":9.8,"slug":"cve-2017-12240-cisco-ios-and-ios-xe-software-dhcp-remote-code-execution","title":"Cisco IOS and IOS XE Software DHCP Remote Code Execution Vulnerability","severity":"critical","exploited":true,"published_at":"2022-03-03T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2017-12240-cisco-ios-and-ios-xe-software-dhcp-remote-code-execution"},{"cve":"CVE-2017-6742","cvss":8.8,"slug":"cve-2017-6742-cisco-ios-and-ios-xe-software-snmp-remote-code-execution","title":"Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability","severity":"critical","exploited":true,"published_at":"2023-04-19T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2017-6742-cisco-ios-and-ios-xe-software-snmp-remote-code-execution"},{"cve":"CVE-2017-6743","cvss":8.8,"slug":"cve-2017-6743-cisco-ios-and-ios-xe-software-snmp-remote-code-execution","title":"Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability","severity":"critical","exploited":true,"published_at":"2022-03-03T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2017-6743-cisco-ios-and-ios-xe-software-snmp-remote-code-execution"},{"cve":"CVE-2017-6739","cvss":8.8,"slug":"cve-2017-6739-cisco-ios-and-ios-xe-software-snmp-remote-code-execution","title":"Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability","severity":"critical","exploited":true,"published_at":"2022-03-03T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2017-6739-cisco-ios-and-ios-xe-software-snmp-remote-code-execution"},{"cve":"CVE-2017-6738","cvss":8.8,"slug":"cve-2017-6738-cisco-ios-and-ios-xe-software-snmp-remote-code-execution","title":"Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability","severity":"critical","exploited":true,"published_at":"2022-03-03T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2017-6738-cisco-ios-and-ios-xe-software-snmp-remote-code-execution"},{"cve":"CVE-2017-6740","cvss":8.8,"slug":"cve-2017-6740-cisco-ios-and-ios-xe-software-snmp-remote-code-execution","title":"Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability","severity":"critical","exploited":true,"published_at":"2022-03-03T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2017-6740-cisco-ios-and-ios-xe-software-snmp-remote-code-execution"},{"cve":"CVE-2017-6736","cvss":8.8,"slug":"cve-2017-6736-cisco-ios-and-ios-xe-software-snmp-remote-code-execution","title":"Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability","severity":"critical","exploited":true,"published_at":"2022-03-03T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2017-6736-cisco-ios-and-ios-xe-software-snmp-remote-code-execution"},{"cve":"CVE-2018-0167","cvss":8.8,"slug":"cve-2018-0167-cisco-ios-xr-and-xe-software-buffer-overflow-vulnerability","title":"Cisco IOS, XR, and XE Software Buffer Overflow Vulnerability","severity":"critical","exploited":true,"published_at":"2022-03-03T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2018-0167-cisco-ios-xr-and-xe-software-buffer-overflow-vulnerability"}],"generated_at":"2026-09-26T09:11:00.170868+00:00"}