CVE-2021-20197: Broadcom Brocade Fabric Operating System Firmware

Medium severity, CVSS 6.3. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Broadcom Brocade Fabric Operating System Firmware: affected versions not specified
• GNU Binutils: up to and including 2.35
• Netapp Cloud Backup: affected versions not specified
• Netapp Ontap Select Deploy Administration Utility: affected versions not specified
• Netapp Solidfire & Hci Management Node: affected versions not specified
• Red Hat Enterprise Linux: version 8.0 only

Published 2021-03-26. Last modified 2026-06-17.