{"cve":"CVE-2021-20197","nvd":{"published":"2021-03-26T17:15:12.920","modified":"2026-06-17T03:33:27.327","status":"Modified","description":"There is an open race window when writing output in the following utilities in GNU binutils version 2.35 and earlier:ar, objcopy, strip, ranlib. When these utilities are run as a privileged user (presumably as part of a script updating binaries across different users), an unprivileged user can trick these utilities into getting ownership of arbitrary files through a symlink.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","score":6.3},"cwes":["CWE-59","CWE-362"],"references":["https://bugzilla.redhat.com/show_bug.cgi?id=1913743","https://security.gentoo.org/glsa/202208-30","https://security.netapp.com/advisory/ntap-20210528-0009/","https://sourceware.org/bugzilla/show_bug.cgi?id=26945","https://bugzilla.redhat.com/show_bug.cgi?id=1913743"],"products":["broadcom:brocade_fabric_operating_system_firmware","gnu:binutils","netapp:cloud_backup","netapp:ontap_select_deploy_administration_utility","netapp:solidfire_\\&_hci_management_node","redhat:enterprise_linux"],"source":"nvd","synced_at":"2026-10-19T21:17:01.373894544+00:00"},"epss":{"cve":"CVE-2021-20197","score":0.00304,"percentile":0.23264,"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."]}