{"id":"CVE-2025-9784","aliases":[],"cve":{"records":[{"id":"CVE-2025-9784","source":"redhat","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2025-09-01T06:33:05.239Z","published":"2025-09-02T13:37:59.772Z","modified":"2026-11-04T21:46:23.817Z"}],"publishers":[{"name":"redhat","role":"CNA","organizationId":"53f830b8-0a3f-465b-8143-3b8a9948e749","modified":"2026-11-04T21:46:23.817Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-08-04T15:56:01.428Z"},{"name":"CVE","role":"ADP","organizationId":"af854a3a-2127-422b-91ae-364da2661108","modified":"2025-11-03T20:07:57.869Z"}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2025:23143","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:0383","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:0384","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:0386","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:33371","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:33372","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:3889","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:3891","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:3892","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:4915","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:4916","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:4917","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:4924","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:76128","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:76129","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:76130","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:76132","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:76134","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/security/cve/CVE-2025-9784","tags":["vdb-entry","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2392306","tags":["issue-tracking","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://github.com/undertow-io/undertow/pull/1778","tags":[],"source":"redhat"},{"url":"https://github.com/undertow-io/undertow/releases/tag/2.2.38.Final","tags":[],"source":"redhat"},{"url":"https://issues.redhat.com/browse/UNDERTOW-2598","tags":[],"source":"redhat"},{"url":"https://kb.cert.org/vuls/id/767506","tags":[],"source":"redhat"},{"url":"https://www.kb.cert.org/vuls/id/767506","tags":[],"source":"CVE"}],"weaknesses":[{"id":"CWE-770","description":"Allocation of Resources Without Limits or Throttling","source":"redhat"},{"id":"CWE-404","description":"CWE-404 Improper Resource Shutdown or Release","source":"CISA-ADP"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2025-09-02T13:55:22.694531Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"yes"},{"name":"Technical Impact","value":"partial"}]}]},"title":"Undertow: undertow madeyoureset http/2 ddos vulnerability","titleSource":"redhat","descriptionSource":"redhat","description":"A flaw was found in Undertow where malformed client requests can trigger server-side stream resets without triggering abuse counters. 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stability.","source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2025-9784"}],"references":["https://access.redhat.com/errata/RHSA-2025:23143","https://access.redhat.com/errata/RHSA-2026:0383","https://access.redhat.com/errata/RHSA-2026:0384","https://access.redhat.com/errata/RHSA-2026:0386","https://access.redhat.com/errata/RHSA-2026:33371","https://access.redhat.com/errata/RHSA-2026:33372","https://access.redhat.com/errata/RHSA-2026:3889","https://access.redhat.com/errata/RHSA-2026:3891","https://access.redhat.com/errata/RHSA-2026:3892","https://access.redhat.com/errata/RHSA-2026:4915","https://access.redhat.com/errata/RHSA-2026:4916","https://access.redhat.com/errata/RHSA-2026:4917","https://access.redhat.com/errata/RHSA-2026:4924","https://access.redhat.com/errata/RHSA-2026:76128","https://access.redhat.com/errata/RHSA-2026:76129","https://access.redhat.com/errata/RHSA-2026:76130","https://access.redhat.com/errata/RHSA-2026:76132","https://access.redhat.com/errata/RHSA-2026:76134","https://access.redhat.com/security/cve/CVE-2025-9784","https://bugzilla.redhat.com/show_bug.cgi?id=2392306","https://github.com/undertow-io/undertow/pull/1778","https://github.com/undertow-io/undertow/releases/tag/2.2.38.Final","https://issues.redhat.com/browse/UNDERTOW-2598","https://kb.cert.org/vuls/id/767506","https://www.kb.cert.org/vuls/id/767506"],"sources":[{"name":"CVE","id":"CVE-2025-9784","modified":"2026-11-04T21:46:23.817Z","url":"https://www.cve.org/CVERecord?id=CVE-2025-9784"}],"assessments":[{"source":"redhat","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5}],"sourceAffected":[],"observedAt":"2026-11-05T00:18:14.216Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T03:00:33.317Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-11-05T00:35:36.254Z","attemptedAt":"2026-11-05T00:35:36.254Z"},{"source":"GHSA","status":"available","checkedAt":"2026-11-05T00:35:37.128Z","attemptedAt":"2026-11-05T00:35:37.128Z"},{"source":"EUVD","status":"available","checkedAt":"2026-11-05T00:35:37.869Z","attemptedAt":"2026-11-05T00:35:37.869Z"},{"source":"EPSS","status":"available","checkedAt":"2026-11-05T00:35:36.585Z","attemptedAt":"2026-11-05T00:35:36.585Z"}],"evidence":[{"source":"NVD","id":"CVE-2025-9784","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-9784","modified":"2026-11-04T22:17:40.723","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","checkedAt":"2026-11-05T00:35:36.254Z"},{"source":"FIRST EPSS","id":"CVE-2025-9784","url":"https://www.first.org/epss/","probability":0.02325,"percentile":0.83543,"date":"2026-11-04","checkedAt":"2026-11-05T00:35:36.585Z"},{"source":"GitHub Advisory Database","id":"GHSA-95h4-w6j8-2rp8","url":"https://github.com/advisories/GHSA-95h4-w6j8-2rp8","modified":"2026-10-06T00:32:49Z","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","checkedAt":"2026-11-05T00:35:37.128Z"},{"source":"ENISA EUVD","id":"EUVD-2025-26388","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-26388","modified":"Nov 4, 2026, 9:46:23 PM","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","checkedAt":"2026-11-05T00:35:37.869Z"}],"aiSummary":{"text":"Undertow is vulnerable to a denial of service (DoS) due to a flaw that allows malicious clients to induce excessive server workload by repeatedly causing server-side stream aborts, affecting versions less than 2.2.38.Final.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-11-05T00:21:03.289Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2025-9784"}]}}