Vulnerability Remediation vs Mitigation: The Difference | Harness Blog

Vulnerability remediation permanently removes a security flaw through actions such as patching, upgrading software, correcting code, or changing configurations, while mitigation temporarily reduces exposure through controls such as network isolation, access restrictions, feature disabling, edge rules, and added monitoring. Mitigation is appropriate when no patch exists, a fix cannot be deployed without unacceptable downtime, or an exploit path is already blocked, but it should be documented as a time-limited exception with a responsible owner and expiry date to avoid becoming an unmanaged permanent risk. Effective vulnerability management extends beyond patching by discovering, prioritizing, acting on, verifying, and reporting findings according to severity, exploit likelihood, asset exposure, and business importance, using signals such as CVSS, EPSS, and CISA’s Known Exploited Vulnerabilities catalog. The article argues that consolidated security workflows, policy-based controls, and automated delivery pipelines can reduce exposure windows by centralizing findings, tracking exemptions, and enabling faster fixes or rollback mechanisms, citing Harness customer examples involving Log4Shell response times and feature-flag-based recovery.

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