{"cve":"CVE-2015-8370","nvd":{"published":"2015-12-16T21:59:04.063","modified":"2026-06-17T00:34:24.010","status":"Modified","description":"Multiple integer underflows in Grub2 1.98 through 2.02 allow physically proximate attackers to bypass authentication, obtain sensitive information, or cause a denial of service (disk corruption) via backspace characters in the (1) grub_username_get function in grub-core/normal/auth.c or the (2) grub_password_get function in lib/crypto.c, which trigger an \"Off-by-two\" or \"Out of bounds overwrite\" memory error.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","score":7.4},"cwes":["CWE-264","CWE-191"],"references":["http://hmarco.org/bugs/CVE-2015-8370-Grub2-authentication-bypass.html","http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173703.html","http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174049.html","http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00037.html","http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00039.html"],"products":["fedoraproject:fedora","gnu:grub2"],"source":"nvd","synced_at":"2026-10-19T20:37:48.328043465+00:00"},"epss":{"cve":"CVE-2015-8370","score":0.01095,"percentile":0.65552,"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."]}