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PatchSiren cyber security CVE debrief

CVE-2024-40684 IBM CVE debrief

IBM Operations Analytics - Log Analysis and IBM SmartCloud Analytics - Log Analysis do not enforce strong password requirements by default, allowing attackers to more easily compromise user accounts through weak or guessable credentials. The vulnerability affects versions 1.3.5.0 through 1.3.8.4. IBM has published a security bulletin with remediation guidance.

Vendor
IBM
Product
Operations Analytics - Log Analysis
CVSS
MEDIUM 5.9
CISA KEV
Not listed in stored evidence
Original CVE published
2026-05-27
Original CVE updated
2026-05-27
Advisory published
2026-05-27
Advisory updated
2026-05-27

Who should care

Organizations running IBM Operations Analytics - Log Analysis or IBM SmartCloud Analytics - Log Analysis versions 1.3.5.0 through 1.3.8.4, particularly security administrators responsible for authentication controls and compliance teams monitoring password policy enforcement.

Technical summary

The affected IBM Log Analysis products ship with default configurations that do not mandate strong passwords, violating secure-by-default principles. Attackers can exploit this by leveraging common or weak credentials to gain unauthorized access to user accounts. The attack vector is network-accessible with high complexity, requiring no privileges or user interaction. Successful exploitation results in high confidentiality impact. Remediation involves applying vendor patches and enforcing organizational password policies.

Defensive priority

medium

Recommended defensive actions

  • Review IBM security bulletin for patch availability and configuration guidance
  • Enforce strong password policies through administrative configuration if not applied by default
  • Audit existing user accounts for weak passwords and require password resets
  • Implement multi-factor authentication where supported
  • Monitor authentication logs for anomalous access patterns

Evidence notes

IBM PSIRT advisory confirms weak password policy default in affected Log Analysis products. CVSS 3.1 vector AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N indicates network-based attack with high complexity but no user interaction required, yielding confidentiality impact. CWE-521 (Weak Password Requirements) classified as primary weakness.

Official resources

2026-05-27