{"id":"CVE-2021-27737","aliases":["EUVD-2021-14479","GHSA-j9pm-x686-vcvp","UBUNTU-CVE-2021-27737"],"status":"published","title":"Apache Traffic Server 9.0.0 is vulnerable to a remote DOS attack on the experimental Slicer plugin.","description":"Apache Traffic Server 9.0.0 is vulnerable to a remote DOS attack on the experimental Slicer plugin.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.03694,"percentile":0.89858,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2021-05-14T20:39:39Z","modified":"2026-10-24T10:30:42Z","products":[{"vendor":"apache","product":"traffic_server"},{"vendor":"apache software foundation","product":"apache traffic server"}],"references":[{"url":"https://lists.apache.org/thread.html/r74f72650c3590478f028ea3a1b8cab2a33d20ad9ff407e894ca70525%40%3Cannounce.trafficserver.apache.org%3E","tags":["mailing-list","x_refsource_MLIST","x_refsource_MISC","x_transferred","Mailing List","Vendor Advisory","advisory","report"]},{"url":"https://lists.apache.org/thread.html/r74f72650c3590478f028ea3a1b8cab2a33d20ad9ff407e894ca70525%40%3Cdev.trafficserver.apache.org%3E","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"https://lists.apache.org/thread.html/r74f72650c3590478f028ea3a1b8cab2a33d20ad9ff407e894ca70525%40%3Cusers.trafficserver.apache.org%3E","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-27737"},{"url":"https://lists.apache.org/thread.html/r74f72650c3590478f028ea3a1b8cab2a33d20ad9ff407e894ca70525@%3Cannounce.trafficserver.apache.org%3E","tags":["report"]},{"url":"https://lists.apache.org/thread.html/r74f72650c3590478f028ea3a1b8cab2a33d20ad9ff407e894ca70525@%3Cdev.trafficserver.apache.org%3E","tags":["report"]},{"url":"https://lists.apache.org/thread.html/r74f72650c3590478f028ea3a1b8cab2a33d20ad9ff407e894ca70525@%3Cusers.trafficserver.apache.org%3E","tags":["report"]},{"url":"https://github.com/advisories/GHSA-j9pm-x686-vcvp"},{"url":"https://ubuntu.com/security/CVE-2021-27737","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-27737","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-27737","description":"Apache Traffic Server 9.0.0 is vulnerable to a remote DOS attack on the experimental Slicer plugin.","status":"published","published":"2021-05-14T20:39:39Z","modified":"2024-08-03T21:26:10.829Z","updated_at":"2026-11-02T14:33:04.360272Z"}],"euvd":[{"id":"EUVD-2021-14479","description":"Apache Traffic Server 9.0.0 is vulnerable to a remote DOS attack on the experimental Slicer plugin.","status":"published","published":"2021-05-14T20:39:39Z","modified":"2024-08-03T21:26:10Z","updated_at":"2026-11-03T03:24:48.366655Z"}],"ghsa":[{"id":"GHSA-j9pm-x686-vcvp","title":"Apache Traffic Server 9.0.0 is vulnerable to a remote DOS attack on the experimental Slicer plugin.","description":"Apache Traffic Server 9.0.0 is vulnerable to a remote DOS attack on the experimental Slicer plugin.","status":"published","published":"2022-05-24T19:02:25Z","modified":"2023-01-29T05:06:42Z","updated_at":"2026-11-02T14:46:04.961867Z"}],"nvd":[{"id":"CVE-2021-27737","description":"Apache Traffic Server 9.0.0 is vulnerable to a remote DOS attack on the experimental Slicer plugin.","status":"published","published":"2021-05-14T21:15:07.45Z","modified":"2026-06-17T03:45:23.44Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:53.343329Z"}],"osv":[{"id":"CVE-2021-27737","description":"Apache Traffic Server 9.0.0 is vulnerable to a remote DOS attack on the experimental Slicer plugin.","status":"published","published":"2021-05-14T21:15:07.45Z","modified":"2026-10-24T10:30:42.772362214Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:19.129331Z"},{"id":"UBUNTU-CVE-2021-27737","description":"Apache Traffic Server 9.0.0 is vulnerable to a remote DOS attack on the experimental Slicer plugin.","status":"withdrawn","published":"2021-05-14T21:15:00Z","modified":"2026-02-12T19:21:34.660231Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:26.779273Z"}]}}