{"cve":"CVE-2025-29908","nvd":{"published":"2025-03-31T19:15:40.367","modified":"2026-06-17T09:05:51.863","status":"Deferred","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","score":5.3},"cwes":["CWE-407"],"references":["https://github.com/ncc-pbottine/QUIC-Hash-Dos-Advisory","https://github.com/netty/netty-incubator-codec-quic/commit/e059bd9b78723f8b035e0c547e42ce263f03461c","https://github.com/netty/netty-incubator-codec-quic/security/advisories/GHSA-hqqc-jr88-p6x2"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:00:28.034033815+00:00"},"epss":{"cve":"CVE-2025-29908","score":0.0059,"percentile":0.48253,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-hqqc-jr88-p6x2","url":"https://osv.dev/vulnerability/GHSA-hqqc-jr88-p6x2","summary":"Netty QUIC hash collision DoS attack","modified":"2025-03-31T22:10:24.710620Z","packages":[{"ecosystem":"Maven","name":"io.netty.incubator:netty-incubator-codec-quic","purl":"pkg:maven/io.netty.incubator/netty-incubator-codec-quic","ranges":["<0.0.71.Final"],"fixed":["0.0.71.Final"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}