{"schemaVersion":3,"id":"CVE-2025-29908","aliases":["GHSA-hqqc-jr88-p6x2"],"status":"published","duplicateOf":null,"title":null,"description":"Netty QUIC codec is a QUIC codec for netty which makes use of quiche. An issue was discovered in the codec. A hash collision vulnerability (in the hash map used to manage connections) allows remote attackers to cause a considerable CPU load on the server (a Hash DoS attack) by initiating connections with colliding Source Connection IDs (SCIDs). This vulnerability is fixed in 0.0.71.Final.","dates":{"published":"2025-03-31T18:43:44.172Z","modified":"2025-04-01T13:50:43.647Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5.3,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":5.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Maven","score":5.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","exploitability":10,"impact":2.3,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":5.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00579,"percentile":0.46585,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0.010000000000000026,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.00569},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00569,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00569,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00569,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00569,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00569,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00569,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00569,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00569,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00569,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00569,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00569,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00569,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00569,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00569,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00569,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00569,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00569,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00569,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00579,"percentile":0.46585}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.00569,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00569,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00569,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00569,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00569,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00569,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00569,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00569,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00569,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00569,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00569,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00569,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00569,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00579,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00579,"percentile":0.46585}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-407","name":"Inefficient Algorithmic Complexity","description":"An algorithm in a product has an inefficient worst-case computational complexity that may be detrimental to system performance and can be triggered by an attacker, typically using crafted manipulations that ensure that the worst case is being reached.","type":"weakness","status":"Incomplete","abstraction":"Class","likelihoodOfExploit":"Low","url":"https://cwe.mitre.org/data/definitions/407.html"}],"affected":[{"vendor":"io.netty.incubator","product":"netty-incubator-codec-quic","name":"io.netty.incubator:netty-incubator-codec-quic","label":"netty-incubator-codec-quic","ecosystem":"Maven","cpePart":null,"purl":"pkg:maven/io.netty.incubator/netty-incubator-codec-quic","purlType":"maven","versions":[{"text":"< 0.0.71.Final","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.0.71.Final","eol":null,"hubHref":null},{"vendor":"netty","product":"netty-incubator-codec-quic","name":"netty-incubator-codec-quic","label":"netty-incubator-codec-quic","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 0.0.71.Final","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.0.71.Final","eol":null,"hubHref":"/vendor/netty/netty-incubator-codec-quic"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/netty/netty-incubator-codec-quic/security/advisories/GHSA-hqqc-jr88-p6x2","label":"github.com/netty/netty-incubator-codec-quic/security/advisories/GHSA-hqqc-jr88-p6x2","hostname":"github.com","tags":["X Refsource CONFIRM","WEB"]},{"url":"https://github.com/netty/netty-incubator-codec-quic/commit/e059bd9b78723f8b035e0c547e42ce263f03461c","label":"github.com/netty/netty-incubator-codec-quic/commit/e059bd9b78723f8b035e0c547e42ce263f03461c","hostname":"github.com","tags":["X Refsource MISC","WEB"]},{"url":"https://github.com/ncc-pbottine/QUIC-Hash-Dos-Advisory","label":"github.com/ncc-pbottine/QUIC-Hash-Dos-Advisory","hostname":"github.com","tags":["X Refsource MISC","WEB"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-29908","label":"nvd.nist.gov/vuln/detail/CVE-2025-29908","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/netty/netty-incubator-codec-quic","label":"github.com/netty/netty-incubator-codec-quic","hostname":"github.com","tags":["PACKAGE"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2025-03-31T18:43:44.172Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2025-04-01T13:50:43.647Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":21,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T19:10:45.304Z","stale":false,"partial":false}}