{"cve":"CVE-2023-50781","nvd":{"published":"2024-02-05T21:15:10.970","modified":"2026-10-15T01:17:12.160","status":"Analyzed","description":"A flaw was found in m2crypto. This issue may allow a remote attacker to decrypt captured messages in TLS servers that use RSA key exchanges, which may lead to exposure of confidential or sensitive data.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5},"cwes":["CWE-203"],"references":["https://access.redhat.com/security/cve/CVE-2023-50781","https://bugzilla.redhat.com/show_bug.cgi?id=2254426","https://access.redhat.com/security/cve/CVE-2023-50781","https://bugzilla.redhat.com/show_bug.cgi?id=2254426","https://cert-portal.siemens.com/productcert/html/ssa-265688.html"],"products":["m2crypto_project:m2crypto","redhat:enterprise_linux","redhat:update_infrastructure"],"source":"nvd","synced_at":"2026-10-19T21:44:57.175229480+00:00"},"epss":{"cve":"CVE-2023-50781","score":0.01124,"percentile":0.66036,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-944j-8ch6-rf6x","url":"https://osv.dev/vulnerability/GHSA-944j-8ch6-rf6x","summary":"m2crypto Bleichenbacher timing attack - incomplete fix for CVE-2020-25657","modified":"2026-07-07T17:56:27.469638616Z","packages":[{"ecosystem":"PyPI","name":"m2crypto","purl":"pkg:pypi/m2crypto","ranges":["<=0.40.1"],"fixed":[]}]},{"id":"PYSEC-2026-1595","url":"https://osv.dev/vulnerability/PYSEC-2026-1595","summary":"m2crypto Bleichenbacher timing attack - incomplete fix for CVE-2020-25657","modified":"2026-07-07T17:46:56.992235943Z","packages":[{"ecosystem":"PyPI","name":"m2crypto","purl":"pkg:pypi/m2crypto","ranges":["<=0.40.1"],"fixed":[]}]}],"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."]}