{"id":"CVE-2015-6429","aliases":["EUVD-2015-6370","GHSA-rv2q-3w65-6h82"],"status":"published","title":"The IKEv1 state machine in Cisco IOS 15.4 through 15.6 and IOS XE 3.15 through 3.17 allows remote...","description":"The IKEv1 state machine in Cisco IOS 15.4 through 15.6 and IOS XE 3.15 through 3.17 allows remote attackers to cause a denial of service (IPsec connection termination) via a crafted IKEv1 packet to a tunnel endpoint, aka Bug ID CSCuw08236.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01744,"percentile":0.77929,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-19"],"published":"2015-12-19T11:00:00Z","modified":"2026-06-17T00:30:52Z","products":[{"vendor":"cisco","product":"ios"},{"vendor":"cisco","product":"ios_xe"}],"references":[{"url":"http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151218-ios","tags":["vendor-advisory","x_refsource_CISCO","x_transferred","Vendor Advisory"]},{"url":"http://www.securitytracker.com/id/1034505","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2015-6429"},{"url":"https://github.com/advisories/GHSA-rv2q-3w65-6h82"}],"sources":{"cve":[{"id":"CVE-2015-6429","description":"The IKEv1 state machine in Cisco IOS 15.4 through 15.6 and IOS XE 3.15 through 3.17 allows remote attackers to cause a denial of service (IPsec connection termination) via a crafted IKEv1 packet to a tunnel endpoint, aka Bug ID CSCuw08236.","status":"published","published":"2015-12-19T11:00:00Z","modified":"2024-08-06T07:22:21.615Z","updated_at":"2026-11-02T14:35:42.984856Z"}],"euvd":[{"id":"EUVD-2015-6370","description":"The IKEv1 state machine in Cisco IOS 15.4 through 15.6 and IOS XE 3.15 through 3.17 allows remote attackers to cause a denial of service (IPsec connection termination) via a crafted IKEv1 packet to a tunnel endpoint, aka Bug ID CSCuw08236.","status":"published","published":"2015-12-19T11:00:00Z","modified":"2024-08-06T07:22:21Z","updated_at":"2026-11-03T02:21:55.706543Z"}],"ghsa":[{"id":"GHSA-rv2q-3w65-6h82","title":"The IKEv1 state machine in Cisco IOS 15.4 through 15.6 and IOS XE 3.15 through 3.17 allows remote...","description":"The IKEv1 state machine in Cisco IOS 15.4 through 15.6 and IOS XE 3.15 through 3.17 allows remote attackers to cause a denial of service (IPsec connection termination) via a crafted IKEv1 packet to a tunnel endpoint, aka Bug ID CSCuw08236.","status":"published","published":"2022-05-17T03:26:32Z","modified":"2023-01-27T05:07:53Z","updated_at":"2026-11-02T14:43:12.437336Z"}],"nvd":[{"id":"CVE-2015-6429","description":"The IKEv1 state machine in Cisco IOS 15.4 through 15.6 and IOS XE 3.15 through 3.17 allows remote attackers to cause a denial of service (IPsec connection termination) via a crafted IKEv1 packet to a tunnel endpoint, aka Bug ID CSCuw08236.","status":"published","published":"2015-12-19T14:59:00.123Z","modified":"2026-06-17T00:30:52.87Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-19"],"updated_at":"2026-11-02T14:03:14.501367Z"}]}}