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How the mentioned CVE works:
The vulnerability in IBM Db2 occurs due to an improper access control flaw within the account lockout mechanism. When a user’s account is locked or their password expires, the database should prevent any further authentication attempts. However, this flaw allows an authenticated user whose account is in a locked or expired state to bypass these security controls. The system fails to correctly invalidate existing sessions or tokens, permitting the user to regain access and execute commands. This effectively negates the security policy designed to lock out compromised or inactive accounts, creating a window for unauthorized access despite the enforced lockout state.
DailyCVE Form:
Platform: IBM Db2
Version: 10.5.0-11.1.4.7
Vulnerability: Authentication Bypass
Severity: Medium
date: 11/07/2025
Prediction: Patch by 12/15/2025
What Undercode Say:
`db2 connect to user `
`db2 “select from syscat.tables”`
`db2 get authorizations`
How Exploit:
1. User password expires.
2. Account becomes locked.
3. Attacker uses existing session.
4. Bypasses lockout state.
5. Performs database operations.
Protection from this CVE:
Apply IBM security patch.
Enforce session termination.
Implement network isolation.
Use multi-factor authentication.
Impact:
Unauthorized data access.
Policy enforcement bypass.
Privilege escalation risk.
Data integrity loss.
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Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
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