Vulnerability Management
In-depth guides and analysis on vulnerability management from the Safeguard engineering team.
135 articles
Zero-Day Patch Response at Scale: Can Open Source Maintai...
Zero-day patch timelines swing from 3 hours to 10 weeks across open source projects. Here's why maintainer capacity, not tooling, is the real bottleneck.
Microsoft May 2026 Patch Tuesday: No Zero-Days, but Two CVSS 9.8 Wormable RCEs
Microsoft's May 2026 Patch Tuesday shipped without a single exploited zero-day for the first time since June 2024, but it still carried two unauthenticated CVSS 9.8 remote code execution bugs in core Windows services that every domain should treat as emergency patches.
Apache Tomcat CVE-2025-24813: a deserialization deep dive
Tomcat's partial-PUT deserialization RCE turned a session persistence feature into a remote code execution path, and the pattern is one Java middleware keeps repeating.
Linguistic Lumberjack: lessons from Fluent Bit CVE-2024-4323
Tenable's Linguistic Lumberjack flaw in Fluent Bit's monitoring API was a heap corruption with a wide blast radius because observability sidecars are everywhere and rarely inventoried.
CVE vs CVSS vs EPSS vs SSVC scoring compared
CVE tells you a flaw exists, CVSS rates severity, EPSS predicts exploitation, and SSVC drives decisions. Here's how Safeguard and Socket.dev use each differently.
The CUPS RCE chain: a postmortem of CVE-2024-47176 and friends
The September 2024 CUPS chain (CVE-2024-47176, 47076, 47175, 47177) turned a printer browsing daemon into a remote code execution vector and exposed how badly long-tail Linux daemons get patched.
regreSSHion revisited: defending against CVE-2024-6387 in 2026
How the regreSSHion race condition in OpenSSH sshd reintroduced an unauthenticated RCE on glibc Linux, what the patch trajectory looked like, and the supply chain habits it should change.
The ROI of CVE Prioritization with Reachability in 2026
Concrete numbers on what reachability-based CVE prioritization saves: engineering hours, mean time to remediate, and the ROI math that survives finance review.
Vulnerability Prioritization in 2025: EPSS, VEX, and the End of CVSS-Only Triage
CVSS scores alone cannot tell you what to patch first. EPSS exploit prediction and VEX documents are reshaping how mature security teams prioritize vulnerabilities at scale.
Vulnerability prioritization: moving beyond CVSS scores
CVSS scores flood teams with thousands of "Critical" findings, but fewer than 5% of CVEs are ever exploited. Here's how reachability and exploit data fix triage.
Risk-based vulnerability management explained
Why CVSS severity alone fails to prioritize vulnerabilities, how Trivy's default scoring falls short, and how EPSS, CISA KEV, and reachability data cut remediation backlogs by 95%+.
How to reduce alert fatigue from vulnerability scanners
Container scanners like Trivy can return thousands of CVE findings per scan. Here's why most are noise, and how reachability and exploit data cut the list to what matters.
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