{"affected":[{"ecosystem":"https://git.savannah.gnu.org/git/grub.git/","packageName":"grub","product":"","source":"CNA: redhat","vendor":"","versions":[{"lessThan":"*","status":"unaffected","version":"2.12","versionType":"custom"}]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"grub2","product":"Red Hat Enterprise Linux 8","source":"CNA: redhat","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"1:2.02-156.el8","versionType":"rpm"}]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"grub2","product":"Red Hat Enterprise Linux 9","source":"CNA: redhat","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"1:2.06-77.el9","versionType":"rpm"}]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"grub2","product":"Red Hat Enterprise Linux 7","source":"CNA: redhat","vendor":"Red Hat","versions":[]}],"cveId":"CVE-2023-4692","cwes":["CWE-122"],"description":"An out-of-bounds write flaw was found in grub2's NTFS filesystem driver. This issue may allow an attacker to present a specially crafted NTFS filesystem image, leading to grub's heap metadata corruption. In some circumstances, the attack may also corrupt the UEFI firmware heap metadata. As a result, arbitrary code execution and secure boot protection bypass may be achieved.","epss":{"date":"2026-11-06","percentile":0.456,"score":0.0054},"exploits":[],"kev":null,"metrics":[{"score":7.5,"severity":"high","source":"CNA: redhat","vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H","version":"3.1"}],"modifiedAt":1794051117372,"publishedAt":1698229649173,"references":[{"source":"CNA: redhat","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2024:2456"},{"source":"CNA: redhat","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2024:3184"},{"source":"CNA: redhat","tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2023-4692"},{"source":"CNA: redhat","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2236613"},{"source":"CNA: redhat","tags":[],"url":"https://dfir.ru/2023/10/03/cve-2023-4692-cve-2023-4693-vulnerabilities-in-the-grub-boot-manager/"},{"source":"CNA: redhat","tags":[],"url":"https://lists.gnu.org/archive/html/grub-devel/2023-10/msg00028.html"},{"source":"CNA: redhat","tags":[],"url":"https://seclists.org/oss-sec/2023/q4/37"},{"source":"ADP: CVE","tags":["vendor-advisory","x_refsource_REDHAT","x_transferred"],"url":"https://access.redhat.com/errata/RHSA-2024:2456"},{"source":"ADP: CVE","tags":["vendor-advisory","x_refsource_REDHAT","x_transferred"],"url":"https://access.redhat.com/errata/RHSA-2024:3184"},{"source":"ADP: CVE","tags":["vdb-entry","x_refsource_REDHAT","x_transferred"],"url":"https://access.redhat.com/security/cve/CVE-2023-4692"},{"source":"ADP: CVE","tags":["issue-tracking","x_refsource_REDHAT","x_transferred"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2236613"},{"source":"ADP: CVE","tags":["x_transferred"],"url":"https://dfir.ru/2023/10/03/cve-2023-4692-cve-2023-4693-vulnerabilities-in-the-grub-boot-manager/"},{"source":"ADP: CVE","tags":["x_transferred"],"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FUU42E7CPYLATXOYVYNW6YTXXULAOV6L/"},{"source":"ADP: CVE","tags":["x_transferred"],"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OIRJ5UZRXX2KLR4IKBJEQUNGOCXMMDLY/"},{"source":"ADP: CVE","tags":["x_transferred"],"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PERFILCHFEUGG3OAMC6W55P6DDIBZK4Q/"},{"source":"ADP: CVE","tags":["x_transferred"],"url":"https://lists.gnu.org/archive/html/grub-devel/2023-10/msg00028.html"},{"source":"ADP: CVE","tags":["x_transferred"],"url":"https://seclists.org/oss-sec/2023/q4/37"},{"source":"ADP: CVE","tags":["x_transferred"],"url":"https://security.gentoo.org/glsa/202311-14"},{"source":"ADP: CVE","tags":["x_transferred"],"url":"https://security.netapp.com/advisory/ntap-20231208-0002/"},{"source":"ADP: CVE","tags":[],"url":"https://lists.debian.org/debian-lts-announce/2023/10/msg00007.html"}],"remediation":[],"revision":"53a93d3e0e9b49ad936a888d7e1ab33e57208256f44941d7867b32592dde0225","sources":[{"modifiedAt":1794051117372,"name":"CNA: redhat","retrievedAt":1794053351274,"url":"https://www.cve.org/CVERecord?id=CVE-2023-4692"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794053361801,"url":"https://api.first.org/data/v1/epss?cve=CVE-2023-4692"}],"ssvc":{"assessedAt":1755267786893,"automatable":"no","exploitation":"poc","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"Grub2: out-of-bounds write at fs/ntfs.c may lead to unsigned code execution","updatedAt":1794053361801}