{"cve":"CVE-2023-4135","nvd":{"published":"2023-08-04T14:15:12.173","modified":"2026-06-17T06:37:09.470","status":"Modified","description":"A heap out-of-bounds memory read flaw was found in the virtual nvme device in QEMU. The QEMU process does not validate an offset provided by the guest before computing a host heap pointer, which is used for copying data back to the guest. Arbitrary heap memory relative to an allocated buffer can be disclosed.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","score":6.5},"cwes":["CWE-125"],"references":["https://access.redhat.com/security/cve/CVE-2023-4135","https://bugzilla.redhat.com/show_bug.cgi?id=2229101","https://security.netapp.com/advisory/ntap-20230915-0012/","https://www.zerodayinitiative.com/advisories/ZDI-CAN-21521","https://access.redhat.com/security/cve/CVE-2023-4135"],"products":["fedoraproject:fedora","qemu:qemu"],"source":"nvd","synced_at":"2026-10-19T21:38:35.729974749+00:00"},"epss":{"cve":"CVE-2023-4135","score":0.00369,"percentile":0.30872,"date":"2026-11-01"},"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."]}