A critical CVE lands. Is your server affected, is anyone exploiting it, and what should you patch first? Cloudflare’s new Zero Wire puts those questions on one page.
Announced on November 3, 2026, Zero Wire is a public vulnerability-intelligence feed inside Cloudflare Radar. You don’t need to be a Cloudflare customer to read its briefings.
What makes Zero Wire useful?
Instead of another enormous list of CVE numbers, it focuses on significant vulnerabilities in Internet-facing software. Each briefing can show:
- Who should investigate: affected technologies and likely deployment scenarios.
- What to do: patching guidance, mitigations and links to vendor advisories.
- Evidence: whether exploitation is known, plus supporting research and sometimes Cloudflare network observations.
- Changes: a last-checked date and an update chronology.
The feed separates issues needing attention from reference briefings. That is a triage aid, not a claim that every reference issue is fixed on your servers.
Try this five-minute security check
- Open Cloudflare Radar and navigate to Zero Wire in the security section.
- Search for a CVE or software name relevant to your stack.
- Read the affected-version details, then follow the original vendor advisory before changing anything.
- Check your actual deployed runtime or package version, including containers and hosts—not just your application’s version.
- Record the affected assets, patch owner and next action. Revisit the briefing when guidance changes.
Cloudflare also provides a prewritten prompt for an AI agent to assess infrastructure exposure. Its intended assessment is read-only: pasting a prompt does not automatically scan your systems, and any conclusions still need evidence.
One important caveat
A WAF rule can reduce exposure to some attacks, but it does not replace a vendor security update. A graph of requests matching an attack signature is not a count of successful compromises. Zero Wire is selective, not a complete CVE database.
Takeaway: Bookmark it as a fast first stop when a scary vulnerability headline appears. Then verify your own versions and patch using the vendor’s instructions.