{"id":"CVE-2015-2809","aliases":["EUVD-2015-2897","GHSA-wgcg-8h66-7wvp"],"status":"published","title":"The Multicast DNS (mDNS) responder in Synology DiskStation Manager (DSM) before 3.1 inadvertently...","description":"The Multicast DNS (mDNS) responder in Synology DiskStation Manager (DSM) before 3.1 inadvertently responds to unicast queries with source addresses that are not link-local, which allows remote attackers to cause a denial of service (traffic amplification) or obtain potentially sensitive information via port-5353 UDP packets to the Avahi component.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.03548,"percentile":0.89384,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-200"],"published":"2015-04-01T01:00:00Z","modified":"2026-06-17T00:24:47Z","products":[{"vendor":"synology","product":"diskstation_manager"}],"references":[{"url":"http://www.kb.cert.org/vuls/id/BLUU-9TLSHD","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","US Government Resource"]},{"url":"http://www.securityfocus.com/bid/73683","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"http://www.kb.cert.org/vuls/id/550620","tags":["third-party-advisory","x_refsource_CERT-VN","x_transferred","Third Party Advisory","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2015-2809"},{"url":"https://github.com/advisories/GHSA-wgcg-8h66-7wvp"}],"sources":{"cve":[{"id":"CVE-2015-2809","description":"The Multicast DNS (mDNS) responder in Synology DiskStation Manager (DSM) before 3.1 inadvertently responds to unicast queries with source addresses that are not link-local, which allows remote attackers to cause a denial of service (traffic amplification) or obtain potentially sensitive information via port-5353 UDP packets to the Avahi component.","status":"published","published":"2015-04-01T01:00:00Z","modified":"2024-08-06T05:24:39.119Z","updated_at":"2026-11-02T14:35:41.26549Z"}],"euvd":[{"id":"EUVD-2015-2897","description":"The Multicast DNS (mDNS) responder in Synology DiskStation Manager (DSM) before 3.1 inadvertently responds to unicast queries with source addresses that are not link-local, which allows remote attackers to cause a denial of service (traffic amplification) or obtain potentially sensitive information via port-5353 UDP packets to the Avahi component.","status":"published","published":"2015-04-01T01:00:00Z","modified":"2024-08-06T05:24:39Z","updated_at":"2026-11-03T02:22:10.564423Z"}],"ghsa":[{"id":"GHSA-wgcg-8h66-7wvp","title":"The Multicast DNS (mDNS) responder in Synology DiskStation Manager (DSM) before 3.1 inadvertently...","description":"The Multicast DNS (mDNS) responder in Synology DiskStation Manager (DSM) before 3.1 inadvertently responds to unicast queries with source addresses that are not link-local, which allows remote attackers to cause a denial of service (traffic amplification) or obtain potentially sensitive information via port-5353 UDP packets to the Avahi component.","status":"published","published":"2022-05-17T03:50:59Z","modified":"2023-01-27T05:08:23Z","cwes":["CWE-200"],"updated_at":"2026-11-02T14:43:17.773763Z"}],"nvd":[{"id":"CVE-2015-2809","description":"The Multicast DNS (mDNS) responder in Synology DiskStation Manager (DSM) before 3.1 inadvertently responds to unicast queries with source addresses that are not link-local, which allows remote attackers to cause a denial of service (traffic amplification) or obtain potentially sensitive information via port-5353 UDP packets to the Avahi component.","status":"published","published":"2015-04-01T02:00:35.97Z","modified":"2026-06-17T00:24:47.997Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T14:03:03.313464Z"}]}}