{"cve":"CVE-2025-59530","nvd":{"published":"2025-10-10T16:15:52.387","modified":"2026-10-19T16:10:00.260","status":"Deferred","description":"quic-go is an implementation of the QUIC protocol in Go. In versions prior to 0.49.0, 0.54.1, and 0.55.0, a misbehaving or malicious server can cause a denial-of-service (DoS) attack on the quic-go client by triggering an assertion failure, leading to a process crash. This requires no authentication and can be exploited during the handshake phase. This was observed in the wild with certain server implementations. quic-go needs to be able to handle misbehaving server implementations, including those that prematurely send a HANDSHAKE_DONE frame. Versions 0.49.0, 0.54.1, and 0.55.0 discard Initial keys when receiving a HANDSHAKE_DONE frame, thereby correctly handling premature HANDSHAKE_DONE frames.","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:H","score":7.5},"cwes":["CWE-617","CWE-755"],"references":["https://github.com/quic-go/quic-go/blob/v0.55.0/connection.go#L2682-L2685","https://github.com/quic-go/quic-go/pull/5354","https://github.com/quic-go/quic-go/security/advisories/GHSA-47m2-4cr7-mhcw"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:11:26.888974865+00:00"},"epss":{"cve":"CVE-2025-59530","score":0.00465,"percentile":0.40008,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-47m2-4cr7-mhcw","url":"https://osv.dev/vulnerability/GHSA-47m2-4cr7-mhcw","summary":"quic-go: Panic occurs when queuing undecryptable packets after handshake completion","modified":"2026-09-10T03:50:29.181505205Z","packages":[{"ecosystem":"Go","name":"github.com/quic-go/quic-go","purl":"pkg:golang/github.com/quic-go/quic-go","ranges":["<0.49.1"],"fixed":["0.49.1"]},{"ecosystem":"Go","name":"github.com/quic-go/quic-go","purl":"pkg:golang/github.com/quic-go/quic-go","ranges":[">=0.50.0 <0.54.1"],"fixed":["0.54.1"]}]},{"id":"GO-2025-4017","url":"https://osv.dev/vulnerability/GO-2025-4017","summary":"Panic occurs when queuing undecryptable packets after handshake completion in github.com/quic-go/quic-go","modified":"2026-08-07T08:11:50.957946951Z","packages":[{"ecosystem":"Go","name":"github.com/quic-go/quic-go","purl":"pkg:golang/github.com/quic-go/quic-go","ranges":["<0.49.1",">=0.50.0 <0.54.1"],"fixed":["0.49.1","0.54.1"]}]}],"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."]}