Fixing CVE-2025-49844 in Redis 4 and 5 with Seal Security

A critical use-after-free vulnerability in Redis (CVE-2025-49844, CVSS 10.0) allows authenticated users to escape the Lua sandbox and execute arbitrary code on the host. Redis versions 5 and earlier, including 4.x and 5.x remain unpatched and unsupported, leaving thousands of deployments exposed.

 

Seal Security provides backported, production-ready patches for Redis 4 and 5, including legacy and containerized environments, without requiring risky upgrades, service restarts, or rebuilds.

Here’s how Seal Security can help:  
  • Backported patches for Redis 5 and earlier 

  • No version upgrade or rebuild required

  • Works across containers, VMs, and legacy systems

  • CI-verified and runtime safe

  • SLA-backed delivery in 72 hours

  • Clear, verifiable remediation for audits and security reviews

 

Running Redis 4 and 5? Seal it Now