epss
Safeguard articles tagged "epss" — guides, analysis, and best practices for software supply chain and application security.
41 articles
Your 30-Day Patch SLA Meets a 48-Hour Exploitation Window
88% of exploitation against vulnerabilities with a public PoC now happens within 48 hours. No organisation patches everything that fast. The fix is a smaller fast lane, selected automatically.
When CVSS Scoring Misleads Severity Context
Only 2-6% of published CVEs are ever exploited in the wild, yet a much larger share carry CVSS 7.0+ scores — a gap that quietly wrecks patch prioritization.
Vulnerability fatigue and the case for risk-based prioritization
48,185 CVEs were published in 2025 alone. Most teams can't triage that volume — reachability and exploit maturity data show which ones actually matter.
A prioritization framework for triaging security alerts at scale
Only 2.6% of CVEs tracked in 2019 saw real-world exploitation, per Kenna Security/Cyentia — yet most teams still triage by CVSS alone. Here's a better framework.
Vulnerability Prioritization FAQ: How to Decide What to Fix First
You can't fix everything at once. This FAQ explains how to prioritize vulnerabilities using severity, exploitation likelihood, active-exploitation evidence, and reachability.
A framework for scaling risk-based AppSec across many teams
40,009 CVEs were published in 2024 alone — a 38.83% jump over 2023. No security team can triage that volume by hand across dozens of engineering teams.
A Step-by-Step Methodology for Mapping and Prioritizing Attack Surface
CVE-2023-34362 sat in one internet-facing file-transfer server and still produced thousands of downstream breaches — attack surface mapping is what catches that server before Cl0p does.
Exploitability vs. breakability: a practical rubric for vulnerability triage
CVSS says a flaw could be bad. CISA's KEV catalog, now past 1,300 entries, says one actually was exploited. Most teams still triage as if the two are the same.
Using EPSS scores for vulnerability remediation prioritization
EPSS predicts exploitation probability for every CVE on a 0-1 scale, updated daily. Paired with CVSS, it turns a 1,000-ticket backlog into a short, defensible list.
Prioritizing vulnerabilities by real-world risk, not raw CVSS score
Kenna/Cyentia found just 2.6% of 2019's tracked CVEs were ever actively exploited — yet most teams still triage backlogs by CVSS score alone.
Beyond vulnerability management: a risk-based approach to AppSec
Fewer than 5% of published CVEs are ever exploited in the wild, yet most teams still triage by raw count — here's the exploitability-first alternative.
Security error budgets: gating risk instead of blocking everything
Google's SRE teams have spent an error budget on reliability since 2016 — applying the same model to security turns blanket blocking into risk-weighted gating.
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