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The CVE-2025-4656 vulnerability in Vault Community Edition occurs during rekey and recovery key operations when a Vault operator cancels the process improperly. This uncontrolled cancellation leaves the system in an inconsistent state, consuming resources and preventing legitimate operations from completing. The issue stems from improper handling of cancellation signals in the rekey/recovery workflow, where orphaned processes continue running without proper cleanup. Attackers could exploit this by repeatedly initiating and canceling these operations, gradually degrading system performance until services become unavailable.
DailyCVE Form
Platform: Vault Community
Version: 1.14.8-1.19.9
Vulnerability: DoS
Severity: Low
Date: Jun 26, 2025
Prediction: Patch available
What Undercode Say
vault operator rekey -cancel vault operator recover -cancel journalctl -u vault --no-pager
How Exploit
1. Initiate rekey operation
2. Cancel mid-process
3. Repeat to exhaust resources
Protection from this CVE
Upgrade to 1.20.0
Disable rekey operations
Monitor resource usage
Impact
Service degradation
Operational disruption
Resource exhaustion
Sources:
Reported By: github.com
Extra Source Hub:
Undercode
