{"cve":"CVE-2026-10740","nvd":{"published":"2026-06-10T19:16:32.470","modified":"2026-10-26T11:10:00.157","status":"Awaiting Analysis","description":"Unbounded memory allocation in the CRYPTO frame reassembler in s2n-quic before 1.8.2 may allow an unauthenticated remote actor to cause a denial of service (degraded availability) by sending crafted QUIC Initial packets.\n\n\n\nTo remediate this issue, users should upgrade to v1.8.2.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","score":6.9},"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-770"],"references":["https://aws.amazon.com/security/security-bulletins/2026-042-aws/","https://github.com/aws/s2n-quic/releases/tag/v1.82.0","https://github.com/aws/s2n-quic/security/advisories/GHSA-9q54-f358-3fqf"],"products":[],"source":"nvd","synced_at":"2026-10-26T11:33:08.859761529+00:00"},"epss":{"cve":"CVE-2026-10740","score":0.00291,"percentile":0.21501,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-9q54-f358-3fqf","url":"https://osv.dev/vulnerability/GHSA-9q54-f358-3fqf","summary":"s2n-quic has excessive memory allocation","modified":"2026-08-14T22:00:07.674402828Z","packages":[{"ecosystem":"crates.io","name":"s2n-quic","purl":"pkg:cargo/s2n-quic","ranges":["<1.82.0"],"fixed":["1.82.0"]}]}],"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."]}