Vulnerability Management

CVE lookup via NVD, CISA KEV integration, and per-host patch gap tracking.

Route: /vuln-management

How it works

Overview

How Vulnerability Management Works

GuardFox Security Systems queries the NIST NVD API and CISA KEV catalog to provide real-time CVE data, enriched with:

CVSS v3.1 base score and vector
EPSS probability (likelihood of exploitation in the next 30 days)
CISA KEV status (actively exploited, federal patch deadline)
Affected product matching against your asset inventory
Patch availability and vendor advisory links

Data flow

NVD API → normalise → enrich with KEV → match to assets → risk score → alert if EPSS > threshold

NVD rate limits

NVD free tier: 5 requests/30 seconds. With an NVD API key: 50 requests/30 seconds.

GuardFox Security Systems caches CVE results for 24 hours to stay within limits.

NVD API key setup

Setup

Setting Up the NVD API Key

Without an API key, CVE lookups are rate-limited to 5/30s and may timeout.

Go to nvd.nist.gov/developers/request-an-api-key
Register with your email — key arrives within minutes
In GuardFox Security Systems: Settings → Integrations → NVD API Key
Paste the key and save

The timeout for NVD requests is set to 20 seconds by default. If you see timeout errors, increase this in Settings → Advanced → NVD Timeout.

CISA KEV

No API key needed. GuardFox Security Systems fetches the KEV catalog daily from the CISA public JSON endpoint and cross-references all tracked CVEs automatically.