{"cve":"CVE-2021-25763","nvd":{"published":"2021-02-03T16:15:14.773","modified":"2026-06-17T03:42:24.897","status":"Modified","description":"In JetBrains Ktor before 1.4.2, weak cipher suites were enabled by default.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":5.3},"cwes":["CWE-327"],"references":["https://blog.jetbrains.com","https://blog.jetbrains.com/blog/2021/02/03/jetbrains-security-bulletin-q4-2020/","https://blog.jetbrains.com","https://blog.jetbrains.com/blog/2021/02/03/jetbrains-security-bulletin-q4-2020/"],"products":["jetbrains:ktor"],"source":"nvd","synced_at":"2026-10-19T21:14:10.479542811+00:00"},"epss":{"cve":"CVE-2021-25763","score":0.00548,"percentile":0.45898,"date":"2026-10-31"},"kev":null,"osv":[],"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."]}