{"cve":"CVE-2021-20307","nvd":{"published":"2021-04-05T22:15:12.883","modified":"2026-06-17T03:33:38.670","status":"Modified","description":"Format string vulnerability in panoFileOutputNamesCreate() in libpano13 2.9.20~rc2+dfsg-3 and earlier can lead to read and write arbitrary memory values.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-134"],"references":["https://bugzilla.redhat.com/show_bug.cgi?id=1946284","https://lists.debian.org/debian-lts-announce/2021/04/msg00010.html","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FVJRXUOBN56ZWP6QQ3NTA6DIFZMDZAEQ/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JE6YZSXNVD6WZ3AG3ENL2DIHQFF24LYX/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VYDYBKHT2MNMQCUMAVJNZW4VH6MD5BOF/"],"products":["debian:debian_linux","fedoraproject:fedora","libpano13_project:libpano13"],"source":"nvd","synced_at":"2026-10-19T21:17:01.373894544+00:00"},"epss":{"cve":"CVE-2021-20307","score":0.01941,"percentile":0.80125,"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."]}