{"schema_version":1,"title":"Cisco IOS XE vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 53 vulnerabilities in Cisco IOS XE: 0 in the last 7 days and 6 in the last 90 days, 41 of them critical and 40 exploited in the wild. The most recent, CVE-2026-20273, was published on 5 August 2026.","url":"https://junglewise.ai/threats/technologies/ios-xe","json_url":"https://junglewise.ai/threats/technologies/ios-xe.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-xe","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":5,"all_time":53,"critical":41,"exploited":40,"last_7_days":0,"last_30_days":0,"last_90_days":6,"last_365_days":14},"latest":[{"cve":"CVE-2026-20273","cvss":8.6,"epss":0.0047,"slug":"cve-2026-20273-cisco-ios-xe-software-improper-input-validation","title":"Cisco IOS XE Software improper input validation","severity":"high","exploited":false,"published_at":"2026-08-05T17:16:49.29+00:00","url":"https://junglewise.ai/threats/cve-2026-20273-cisco-ios-xe-software-improper-input-validation"},{"cve":"CVE-2026-20272","cvss":9.8,"epss":0.0057,"slug":"cve-2026-20272-cisco-ios-xe-software-improper-neutralization-of-special-elements","title":"Cisco IOS XE Software improper neutralization of special elements","severity":"critical","exploited":false,"published_at":"2026-08-05T17:16:49.053+00:00","url":"https://junglewise.ai/threats/cve-2026-20272-cisco-ios-xe-software-improper-neutralization-of-special-elements"},{"cve":"CVE-2026-20271","cvss":8.6,"epss":0.0047,"slug":"cve-2026-20271-cisco-ios-xe-insufficient-control-flow-management","title":"Cisco IOS XE insufficient control flow management","severity":"high","exploited":false,"published_at":"2026-08-05T17:16:48.81+00:00","url":"https://junglewise.ai/threats/cve-2026-20271-cisco-ios-xe-insufficient-control-flow-management"},{"cve":"CVE-2026-20270","cvss":8.6,"epss":0.0047,"slug":"cve-2026-20270-cisco-ios-xe-software-incorrect-calculation-vulnerability","title":"Cisco IOS XE Software incorrect calculation vulnerability","severity":"high","exploited":false,"published_at":"2026-08-05T17:16:48.34+00:00","url":"https://junglewise.ai/threats/cve-2026-20270-cisco-ios-xe-software-incorrect-calculation-vulnerability"},{"cve":"CVE-2026-20269","cvss":8.6,"epss":0.0047,"slug":"cve-2026-20269-cisco-ios-xe-improper-resource-lifetime-control","title":"Cisco IOS XE improper resource lifetime control","severity":"high","exploited":false,"published_at":"2026-08-05T17:16:48.07+00:00","url":"https://junglewise.ai/threats/cve-2026-20269-cisco-ios-xe-improper-resource-lifetime-control"},{"cve":"CVE-2026-20268","cvss":8.6,"epss":0.0047,"slug":"cve-2026-20268-cisco-ios-xe-software-buffer-overflow-in-memory-operations","title":"Cisco IOS XE Software buffer overflow in memory operations","severity":"high","exploited":false,"published_at":"2026-08-05T17:16:47.83+00:00","url":"https://junglewise.ai/threats/cve-2026-20268-cisco-ios-xe-software-buffer-overflow-in-memory-operations"},{"cve":"CVE-2026-20066","cvss":5.8,"epss":0.0045,"slug":"cve-2026-20066-cisco-snort-3-detection-engine-denial-of-service-in-http","title":"Cisco Snort 3 Detection Engine denial of service in HTTP JavaScript normalization","severity":"medium","exploited":false,"published_at":"2026-03-04T18:16:21.67+00:00","url":"https://junglewise.ai/threats/cve-2026-20066-cisco-snort-3-detection-engine-denial-of-service-in-http"},{"cve":"CVE-2026-20065","cvss":5.8,"epss":0.0037,"slug":"cve-2026-20065-cisco-snort-3-detection-engine-denial-of-service","title":"Cisco Snort 3 Detection Engine denial of service","severity":"medium","exploited":false,"published_at":"2026-03-04T18:16:21.35+00:00","url":"https://junglewise.ai/threats/cve-2026-20065-cisco-snort-3-detection-engine-denial-of-service"},{"cve":"CVE-2026-20058","cvss":5.8,"epss":0.0039,"slug":"cve-2026-20058-cisco-snort-3-vba-decompression-denial-of-service","title":"Cisco Snort 3 VBA decompression denial of service","severity":"medium","exploited":false,"published_at":"2026-03-04T18:16:20.643+00:00","url":"https://junglewise.ai/threats/cve-2026-20058-cisco-snort-3-vba-decompression-denial-of-service"},{"cve":"CVE-2026-20057","cvss":5.8,"epss":0.0043,"slug":"cve-2026-20057-cisco-snort-3-vba-decompression-denial-of-service","title":"Cisco Snort 3 VBA decompression denial of service","severity":"medium","exploited":false,"published_at":"2026-03-04T18:16:20.32+00:00","url":"https://junglewise.ai/threats/cve-2026-20057-cisco-snort-3-vba-decompression-denial-of-service"},{"cve":"CVE-2026-20054","cvss":5.8,"epss":0.0043,"slug":"cve-2026-20054-cisco-snort-3-vba-decompression-denial-of-service","title":"Cisco Snort 3 VBA decompression denial of service","severity":"medium","exploited":false,"published_at":"2026-03-04T18:16:19.92+00:00","url":"https://junglewise.ai/threats/cve-2026-20054-cisco-snort-3-vba-decompression-denial-of-service"},{"cve":"CVE-2026-20053","cvss":5.8,"epss":0.0041,"slug":"cve-2026-20053-cisco-snort-3-vba-decompression-denial-of-service","title":"Cisco Snort 3 VBA decompression denial of service","severity":"medium","exploited":false,"published_at":"2026-03-04T18:16:19.607+00:00","url":"https://junglewise.ai/threats/cve-2026-20053-cisco-snort-3-vba-decompression-denial-of-service"},{"cve":"CVE-2025-20359","cvss":6.5,"epss":0.0048,"slug":"cve-2025-20359-cisco-snort-3-buffer-under-read-in-http-mime-decoder","title":"Cisco Snort 3 buffer under-read in HTTP MIME decoder","severity":"medium","exploited":false,"published_at":"2025-10-15T17:15:49.23+00:00","url":"https://junglewise.ai/threats/cve-2025-20359-cisco-snort-3-buffer-under-read-in-http-mime-decoder"},{"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-2023-20273","cvss":7.2,"slug":"cve-2023-20273-cisco-ios-xe-web-ui-command-injection-vulnerability","title":"Cisco IOS XE Web UI Command Injection Vulnerability","severity":"critical","exploited":true,"published_at":"2023-10-23T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2023-20273-cisco-ios-xe-web-ui-command-injection-vulnerability"},{"cve":"CVE-2023-20198","cvss":10,"slug":"cve-2023-20198-cisco-ios-xe-web-ui-privilege-escalation-vulnerability","title":"Cisco IOS XE Web UI Privilege Escalation Vulnerability","severity":"critical","exploited":true,"published_at":"2023-10-16T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2023-20198-cisco-ios-xe-web-ui-privilege-escalation-vulnerability"},{"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-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-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-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-2017-3881","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-2018-0159","cvss":7.5,"slug":"cve-2018-0159-cisco-ios-and-xe-software-internet-key-exchange-version-1-denial","title":"Cisco IOS and XE Software Internet Key Exchange Version 1 Denial-of-Service Vulnerability","severity":"critical","exploited":true,"published_at":"2022-03-03T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2018-0159-cisco-ios-and-xe-software-internet-key-exchange-version-1-denial"},{"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-2017-6738","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-2018-0180","cvss":5.9,"slug":"cve-2018-0180-cisco-ios-software-denial-of-service-vulnerability","title":"Cisco IOS Software Denial-of-Service Vulnerability","severity":"critical","exploited":true,"published_at":"2022-03-03T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2018-0180-cisco-ios-software-denial-of-service-vulnerability"}],"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":1,"exploited":0,"vulnerabilities":6},{"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":0},{"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 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 XR","slug":"ios-xr","vulnerabilities":30,"url":"https://junglewise.ai/threats/technologies/ios-xr"},{"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 XE","slug":"ios-xe","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-xe/index.html","description":"An operating system for Cisco networking equipment that integrates Linux with the Cisco IOS software.","url":"https://junglewise.ai/threats/technologies/ios-xe"},"most_severe":[{"cve":"CVE-2023-20198","cvss":10,"slug":"cve-2023-20198-cisco-ios-xe-web-ui-privilege-escalation-vulnerability","title":"Cisco IOS XE Web UI Privilege Escalation Vulnerability","severity":"critical","exploited":true,"published_at":"2023-10-16T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2023-20198-cisco-ios-xe-web-ui-privilege-escalation-vulnerability"},{"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-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-2018-0151","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-2018-0171","cvss":9.8,"slug":"cve-2018-0171-cisco-ios-and-ios-xe-software-smart-install-remote-code-execution","title":"Cisco IOS and IOS XE Software Smart Install Remote Code Execution Vulnerability","severity":"critical","exploited":true,"published_at":"2021-11-03T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2018-0171-cisco-ios-and-ios-xe-software-smart-install-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-2017-6738","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-2017-6744","cvss":8.8,"slug":"cve-2017-6744-cisco-ios-software-snmp-remote-code-execution-vulnerability","title":"Cisco IOS 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-2017-6744-cisco-ios-software-snmp-remote-code-execution-vulnerability"},{"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-2017-6740","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"}],"generated_at":"2026-09-26T09:11:00.170868+00:00"}