{"cve":"CVE-2016-8520","nvd":{"published":"2018-02-15T22:29:00.873","modified":"2026-06-17T00:54:29.367","status":"Modified","description":"HPE Helion Eucalyptus v4.3.0 and earlier does not correctly check IAM user's permissions for accessing versioned objects and ACLs. In some cases, authenticated users with S3 permissions could also access versioned data.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":8.8},"cwes":["CWE-275"],"references":["http://www.securityfocus.com/bid/95369","https://support.hpe.com/hpsc/doc/public/display?docId=emr_na-c05363782","http://www.securityfocus.com/bid/95369","https://support.hpe.com/hpsc/doc/public/display?docId=emr_na-c05363782"],"products":["eucalyptus:eucalyptus"],"source":"nvd","synced_at":"2026-10-19T20:48:34.567387330+00:00"},"epss":{"cve":"CVE-2016-8520","score":0.01357,"percentile":0.71659,"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."]}