{"cve":"CVE-2020-25658","nvd":{"published":"2020-11-12T14:15:22.877","modified":"2026-06-17T03:07:04.487","status":"Modified","description":"It was found that python-rsa is vulnerable to Bleichenbacher timing attacks. An attacker can use this flaw via the RSA decryption API to decrypt parts of the cipher text encrypted with RSA.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","score":5.9},"cwes":["CWE-385","CWE-327"],"references":["https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-25658","https://github.com/sybrenstuvel/python-rsa/issues/165","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2SAF67KDGSOHLVFTRDOHNEAFDRSSYIWA/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APF364QJ2IYLPDNVFBOEJ24QP2WLVLJP/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QY4PJWTYSOV7ZEYZVMYIF6XRU73CY6O7/"],"products":["fedoraproject:fedora","python-rsa_project:python-rsa","redhat:openstack_platform"],"source":"nvd","synced_at":"2026-10-19T21:11:20.317016139+00:00"},"epss":{"cve":"CVE-2020-25658","score":0.01651,"percentile":0.76529,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-xrx6-fmxq-rjj2","url":"https://osv.dev/vulnerability/GHSA-xrx6-fmxq-rjj2","summary":"Timing attacks in python-rsa","modified":"2024-10-26T22:49:36.190678Z","packages":[{"ecosystem":"PyPI","name":"rsa","purl":"pkg:pypi/rsa","ranges":[">=2.1 <4.7"],"fixed":["4.7"]}]},{"id":"PYSEC-2020-100","url":"https://osv.dev/vulnerability/PYSEC-2020-100","summary":"","modified":"2023-11-08T04:03:11.202381Z","packages":[{"ecosystem":"PyPI","name":"rsa","purl":"pkg:pypi/rsa","ranges":[">=2.1 <4.7"],"fixed":["4.7"]}]}],"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."]}