{"id":"CVE-2015-4191","aliases":["EUVD-2015-4214","GHSA-574v-ffv3-5fcx"],"status":"published","title":"Cisco IOS XR 5.2.1 allows remote attackers to cause a denial of service (ipv6_io service reload)...","description":"Cisco IOS XR 5.2.1 allows remote attackers to cause a denial of service (ipv6_io service reload) via a malformed IPv6 packet, aka Bug ID CSCuq95565.","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":0.02938,"percentile":0.87198,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-399"],"published":"2015-06-19T01:00:00Z","modified":"2026-06-17T00:26:53Z","products":[{"vendor":"cisco","product":"ios_xr"}],"references":[{"url":"http://tools.cisco.com/security/center/viewAlert.x?alertId=39383","tags":["vendor-advisory","x_refsource_CISCO","x_transferred","Vendor Advisory"]},{"url":"http://www.securitytracker.com/id/1032615","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"http://www.securityfocus.com/bid/75260","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2015-4191"},{"url":"https://github.com/advisories/GHSA-574v-ffv3-5fcx"}],"sources":{"cve":[{"id":"CVE-2015-4191","description":"Cisco IOS XR 5.2.1 allows remote attackers to cause a denial of service (ipv6_io service reload) via a malformed IPv6 packet, aka Bug ID CSCuq95565.","status":"published","published":"2015-06-19T01:00:00Z","modified":"2024-08-06T06:04:03.195Z","updated_at":"2026-11-02T14:35:43.698357Z"}],"euvd":[{"id":"EUVD-2015-4214","description":"Cisco IOS XR 5.2.1 allows remote attackers to cause a denial of service (ipv6_io service reload) via a malformed IPv6 packet, aka Bug ID CSCuq95565.","status":"published","published":"2015-06-19T01:00:00Z","modified":"2024-08-06T06:04:03Z","updated_at":"2026-11-03T02:22:05.081899Z"}],"ghsa":[{"id":"GHSA-574v-ffv3-5fcx","title":"Cisco IOS XR 5.2.1 allows remote attackers to cause a denial of service (ipv6_io service reload)...","description":"Cisco IOS XR 5.2.1 allows remote attackers to cause a denial of service (ipv6_io service reload) via a malformed IPv6 packet, aka Bug ID CSCuq95565.","status":"published","published":"2022-05-17T03:14:02Z","modified":"2023-01-27T05:07:43Z","updated_at":"2026-11-02T14:43:10.319958Z"}],"nvd":[{"id":"CVE-2015-4191","description":"Cisco IOS XR 5.2.1 allows remote attackers to cause a denial of service (ipv6_io service reload) via a malformed IPv6 packet, aka Bug ID CSCuq95565.","status":"published","published":"2015-06-19T01:59:00.07Z","modified":"2026-06-17T00:26:53.707Z","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-399"],"updated_at":"2026-11-02T14:03:05.884985Z"}]}}