{"cve":"CVE-2021-3476","nvd":{"published":"2021-03-30T18:15:18.077","modified":"2026-06-17T04:05:10.380","status":"Modified","description":"A flaw was found in OpenEXR's B44 uncompression functionality in versions before 3.0.0-beta. An attacker who is able to submit a crafted file to OpenEXR could trigger shift overflows, potentially affecting application availability.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","score":5.3},"cwes":["CWE-190"],"references":["https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=24787","https://bugzilla.redhat.com/show_bug.cgi?id=1939145","https://lists.debian.org/debian-lts-announce/2021/07/msg00001.html","https://lists.debian.org/debian-lts-announce/2022/12/msg00022.html","https://security.gentoo.org/glsa/202107-27"],"products":["debian:debian_linux","openexr:openexr"],"source":"nvd","synced_at":"2026-10-19T21:17:01.373894544+00:00"},"epss":{"cve":"CVE-2021-3476","score":0.01848,"percentile":0.79092,"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."]}