Cloudflare Network Firewall - New managed rule to help mitigate CVE-2026-98432.
Cloudflare Network Firewall has a new managed rule to help mitigate the Linux IPv4 TCP use-after-free vulnerability (CVE-2026-98432 ↗︎): Rule name: Block CVE-2026-98432 traffic Rule ID: 6a4df2bf984946a88c74b07349557e83 The rule is disabled by default. To use it: Go to Networking > Firewall Policies > Managed Rulesets. Enable the rule with action Log first. Review traffic that matches the rule. If the matching traffic is not expected for your environment, change the action to Block. For more info
