{"cve":"CVE-2021-20300","nvd":{"published":"2022-03-04T18:15:07.867","modified":"2026-06-17T03:33:38.003","status":"Modified","description":"A flaw was found in OpenEXR's hufUncompress functionality in OpenEXR/IlmImf/ImfHuf.cpp. This flaw allows an attacker who can submit a crafted file that is processed by OpenEXR, to trigger an integer overflow. The highest threat from this vulnerability is to system availability.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-190"],"references":["https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25562","https://bugzilla.redhat.com/show_bug.cgi?id=1939153","https://github.com/AcademySoftwareFoundation/openexr/pull/836","https://lists.debian.org/debian-lts-announce/2022/12/msg00022.html","https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25562"],"products":["debian:debian_linux","openexr:openexr"],"source":"nvd","synced_at":"2026-10-19T21:28:04.509275555+00:00"},"epss":{"cve":"CVE-2021-20300","score":0.0089,"percentile":0.59363,"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."]}