{"id":"CVE-2015-6421","aliases":["EUVD-2015-6362","GHSA-6f4r-2cf4-2gv2"],"status":"published","title":"cifs-ao in the CIFS optimization functionality on Cisco Wide Area Application Service (WAAS) and...","description":"cifs-ao in the CIFS optimization functionality on Cisco Wide Area Application Service (WAAS) and Virtual WAAS (vWAAS) devices 5.x before 5.3.5d and 5.4 and 5.5 before 5.5.3 allows remote attackers to cause a denial of service (resource consumption and device reload) via crafted network traffic, aka Bug ID CSCus85330.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01931,"percentile":0.80162,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-399"],"published":"2016-01-27T22:00:00Z","modified":"2026-06-17T00:30:52Z","products":[{"vendor":"cisco","product":"wide_area_application_services"}],"references":[{"url":"http://www.securitytracker.com/id/1034831","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160127-waascifs","tags":["vendor-advisory","x_refsource_CISCO","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2015-6421"},{"url":"https://github.com/advisories/GHSA-6f4r-2cf4-2gv2"}],"sources":{"cve":[{"id":"CVE-2015-6421","description":"cifs-ao in the CIFS optimization functionality on Cisco Wide Area Application Service (WAAS) and Virtual WAAS (vWAAS) devices 5.x before 5.3.5d and 5.4 and 5.5 before 5.5.3 allows remote attackers to cause a denial of service (resource consumption and device reload) via crafted network traffic, aka Bug ID CSCus85330.","status":"published","published":"2016-01-27T22:00:00Z","modified":"2024-08-06T07:22:21.59Z","updated_at":"2026-11-02T14:35:42.984856Z"}],"euvd":[{"id":"EUVD-2015-6362","description":"cifs-ao in the CIFS optimization functionality on Cisco Wide Area Application Service (WAAS) and Virtual WAAS (vWAAS) devices 5.x before 5.3.5d and 5.4 and 5.5 before 5.5.3 allows remote attackers to cause a denial of service (resource consumption and device reload) via crafted network traffic, aka Bug ID CSCus85330.","status":"published","published":"2016-01-27T22:00:00Z","modified":"2024-08-06T07:22:21Z","updated_at":"2026-11-03T02:21:55.706543Z"}],"ghsa":[{"id":"GHSA-6f4r-2cf4-2gv2","title":"cifs-ao in the CIFS optimization functionality on Cisco Wide Area Application Service (WAAS) and...","description":"cifs-ao in the CIFS optimization functionality on Cisco Wide Area Application Service (WAAS) and Virtual WAAS (vWAAS) devices 5.x before 5.3.5d and 5.4 and 5.5 before 5.5.3 allows remote attackers to cause a denial of service (resource consumption and device reload) via crafted network traffic, aka Bug ID CSCus85330.","status":"published","published":"2022-05-17T03:26:33Z","modified":"2023-01-27T05:08:19Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T14:43:16.659055Z"}],"nvd":[{"id":"CVE-2015-6421","description":"cifs-ao in the CIFS optimization functionality on Cisco Wide Area Application Service (WAAS) and Virtual WAAS (vWAAS) devices 5.x before 5.3.5d and 5.4 and 5.5 before 5.5.3 allows remote attackers to cause a denial of service (resource consumption and device reload) via crafted network traffic, aka Bug ID CSCus85330.","status":"published","published":"2016-01-27T22:59:01.363Z","modified":"2026-06-17T00:30:52.043Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-399"],"updated_at":"2026-11-02T14:03:15.746629Z"}]}}