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CVE-2026-84081 – Security Restriction Bypass via Improper Certificate Validation – IBM Guardium Data

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Summary

CVE-2026-84081 is a high-severity vulnerability in IBM Guardium Data Protection 12.2 caused by improper certificate validation (CWE-295). The flaw could allow a remote, unauthenticated attacker to bypass security restrictions, potentially compromising the confidentiality, integrity, and availability of the system. IBM rates this vulnerability 8.1 (High) on the CVSS v3.1 scale.

Technical details

  • Root cause: The affected component of Guardium Data Protection fails to properly validate digital certificates (CWE-295: Improper Certificate Validation) as part of a security-relevant trust decision.
  • Trigger conditions: No authentication or user interaction is required; the flaw is reachable directly over the network by an attacker capable of interposing on or interacting with the certificate validation logic.
  • Attack vector: Network-based (AV:N). Attack complexity is rated high (AC:H), indicating the attacker must satisfy specific conditions (such as a favorable network position) to exploit the flaw.
  • Impact: Successful exploitation allows an attacker to bypass intended security restrictions, with the CVSS vector indicating high impact to confidentiality, integrity, and availability of the affected system.

Affected software

  • IBM Guardium Data Protection version 12.2 (12.2.0)

Severity

  • CVSS v3.1 Base Score: 8.1 (High)
  • Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Mitigation and recommended actions

  • Immediate: IBM has published a fix for Guardium Data Protection 12.2 via IBM Support Fix Central (fix identifier SqlGuard_12.0p233_FixPack). Customers should apply this fix promptly.
  • If unable to patch immediately: IBM’s advisory does not document any workaround for this issue; organizations that cannot immediately apply the fix should restrict network access to Guardium Data Protection management interfaces to trusted networks and monitor for anomalous certificate-related or authentication-bypass activity until the patch can be applied.

References

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