Cloudflare Launches Zero Wire, a Public Vulnerability Intelligence Feed on Cloudflare Radar

Zero Wire is a dedicated security intelligence hub within Cloudflare Radar. Rather than functioning as another database containing thousands of vulnerability records, it focuses on significant security issues that require attention from organisations operating internet-facing systems.

Each vulnerability briefing is designed to answer four important questions:

• What happened? A plain-language explanation of the vulnerability.
• Who should investigate? The software, systems and teams potentially affected.
• What should organisations do? Recommended investigation, mitigation and patching steps.
• What evidence is available? Links to vendor advisories, CVE records, security research and exploitation reports.

The format is designed to serve both technical and business audiences. Security leaders can quickly understand why a vulnerability matters, while engineers can follow the technical guidance to identify affected systems and apply fixes.

Cloudflare said its briefings combine independent security research, observations from its global network and authoritative external sources.

Zero Wire Organises Vulnerabilities by Urgency

One of the platform’s important features is its two-category briefing system.

Needs Attention: This section contains vulnerabilities involving active incidents, newly available guidance or unresolved questions that security teams should investigate promptly.

Reference: This section stores vulnerabilities for which the available guidance has become more stable. These records remain accessible even when the immediate response has been established.

The distinction is important because moving a vulnerability into the Reference section does not mean every affected organisation has patched its systems.

Each briefing also includes a status and last-checked date, helping security teams understand whether information has changed since their previous review.

Users can search for vulnerabilities by their CVE identifier, issue name or technology tag. Related entries can also be discovered through these tags.

PHP and Linux Vulnerabilities Highlight the Platform’s Purpose

Cloudflare has already published several examples demonstrating how Zero Wire can help organisations respond to significant security problems.

One example is php2shell, which involves vulnerabilities in the PHP runtime.

The platform lists CVE-2026-109618, CVE-2026-109619 and the related CVE-2026-115560. The first two vulnerabilities have been listed by CISA as known exploited vulnerabilities, while the follow-up issue requires a separate assessment of PHP session configuration.

The briefing explains that updating a WordPress website or an individual plugin may not resolve a vulnerability in the underlying PHP runtime. Organisations must identify the actual runtime version and apply the appropriate vendor security updates.

Another example involves a Linux IPv4 TCP use-after-free vulnerability, identified as CVE-2026-98432. The flaw could expose kernel memory, crash a host or potentially allow remote code execution before application authentication.

Zero Wire recommends checking the running Linux kernel against the relevant distribution advisory and applying the fixed version. Organisations must also verify that the update is active on container hosts and Kubernetes nodes.

These examples show why vulnerability intelligence needs to explain more than a security score. Organisations need to understand which component is affected and what action will actually address the problem.

AI Agents Can Help Organisations Assess Their Exposure

One of Zero Wire’s more interesting features is its integration with AI-assisted security workflows.

Each relevant vulnerability briefing includes a precompiled prompt that users can copy into an AI agent with access to their infrastructure.

The prompt is designed to help assess which systems may be affected, identify relevant software versions, examine available fixes and recommend next steps.

For example, an organisation investigating a PHP vulnerability could use the prompt to examine its deployed PHP runtimes, identify potentially exposed applications and collect evidence about whether the necessary updates have been installed.

The approach could help security teams reduce the time required to investigate vulnerabilities across large technology environments.

However, the AI prompt does not automatically scan or modify infrastructure. Its usefulness depends on the connected agent’s authorised access, available system information and ability to provide evidence-based results.

Cloudflare’s approach is to help teams use AI as an investigation assistant while keeping the actual assessment and remediation process under organisational control.

Cloudflare Includes Real-World Attack Intelligence

Another important component is the evidence section, which brings together information from different security sources.

These can include:

• Common Vulnerabilities and Exposures (CVE) records.
• Vendor security advisories.
• CISA’s Known Exploited Vulnerabilities catalogue.
• Independent security research.
• Cloudflare network observations and relevant Web Application Firewall traffic data.

The platform can also include charts showing HTTP requests matching specific Cloudflare WAF security rules.

This provides additional context about whether attackers are attempting to exploit a particular vulnerability across traffic observed by Cloudflare.

However, Cloudflare makes an important distinction: requests matching a WAF rule do not necessarily represent successful attacks or compromised systems. Similarly, the absence of observed malicious traffic on its network does not prove that a vulnerability is not being exploited elsewhere.

Each briefing also includes an update chronology so security teams can follow changes in vendor guidance, exploitation evidence and recommended responses.

Cloudflare Explains Which Security Controls Can Help

Zero Wire also connects vulnerability information with Cloudflare’s own security products.

When a vulnerability can be mitigated using a Cloudflare Web Application Firewall rule, the briefing explains the relevant protection and provides configuration guidance.

Where available, users can follow links to the appropriate Cloudflare dashboard settings to review their security configurations.

However, Cloudflare emphasises that a WAF rule is a compensating control, not a replacement for patching vulnerable software.

For example, a WAF may block malicious requests travelling through the traffic it can inspect. It cannot necessarily protect systems from every attack path or reverse damage that has already occurred on an affected server.

Organisations must still follow the original software vendor’s remediation instructions.

Importantly, Zero Wire is intended to be useful regardless of whether an organisation is a Cloudflare customer. The vulnerability briefings and supporting intelligence are publicly accessible.

Zero Wire Offers RSS Feeds for Security Updates

Cloudflare has also introduced ways for users to follow new vulnerability briefings without repeatedly checking the Radar website.

Users can subscribe to the main Zero Wire RSS feed or follow individual technology tags. New briefings are also surfaced through the Caught on Radar section of the Cloudflare Radar homepage.

This makes it easier for security teams to incorporate vulnerability updates into their existing monitoring and information-gathering workflows.

The platform can be particularly useful for organisations managing multiple software environments, where a newly disclosed vulnerability may affect several applications or infrastructure components simultaneously.

The Bigger Picture

Cloudflare’s Zero Wire launch reflects a growing challenge for cybersecurity teams: the speed at which vulnerabilities are being discovered is increasing, while organisations still need time to understand their exposure and apply fixes.

AI is contributing to this change by helping researchers analyse large codebases and identify weaknesses that may have remained undiscovered for years. The same technology could also help attackers find and exploit vulnerabilities more efficiently.

In this environment, simply publishing a vulnerability record is not enough. Businesses need reliable information about affected software, evidence of exploitation and practical remediation guidance.

Zero Wire attempts to bring these elements together in one public resource. Its combination of security research, network observations, vendor guidance and AI-assisted investigation could make vulnerability response more accessible to organisations of different sizes.

Looking Ahead

Cloudflare is likely to expand Zero Wire’s collection of vulnerability briefings as new critical security issues emerge. Its usefulness will depend on how quickly the company updates its research, how accurately it distinguishes confirmed exploitation from emerging threats and how actionable its remediation guidance remains. The addition of RSS subscriptions and technology-specific feeds also gives security teams a way to incorporate the service into regular monitoring routines.

For the wider cybersecurity industry, Zero Wire represents a move towards more practical and contextual vulnerability intelligence. As AI accelerates both vulnerability discovery and cyberattacks, businesses will increasingly need tools that connect technical information with clear operational decisions. Cloudflare’s new platform aims to make that process faster by helping organisations understand what happened, determine whether they are affected and decide what to fix next.