CVE-2026-84105: IBM Guardium Data Protection SQL Injection

CVE-2026-84105 Overview

CVE-2026-84105 is a SQL injection vulnerability affecting IBM Guardium Data Protection 12.2. The flaw stems from improper neutralization of special elements used in an SQL command [CWE-89]. A remote authenticated attacker can craft malicious SQL input to read sensitive information from the underlying database.

The vulnerability requires network access and low-level privileges, but no user interaction. Successful exploitation results in confidentiality impact with a scope change, meaning the attacker can access data beyond the immediate security boundary. Integrity and availability are not directly affected.

Critical Impact
Authenticated attackers can extract sensitive information from IBM Guardium Data Protection 12.2 by injecting crafted SQL statements through the affected interface.

Affected Products

IBM Guardium Data Protection 12.2

Discovery Timeline

2026-09-18 - CVE CVE-2026-84105 published to NVD
2026-09-22 - Last updated in NVD database

Technical Details for CVE-2026-84105

Vulnerability Analysis

CVE-2026-84105 is classified under [CWE-89], Improper Neutralization of Special Elements used in an SQL Command. IBM Guardium Data Protection 12.2 fails to properly sanitize user-supplied input before incorporating it into SQL queries. This allows an authenticated user to alter the intended query logic.

The vulnerability produces a scope change, indicating that injected SQL can retrieve data outside the privilege boundary normally enforced for the authenticated session. Because Guardium is a data-security monitoring platform, exposed data can include audit records, monitored database activity, and configuration details.

Exploitation does not require crafted files, elevated roles, or interaction from another user. An attacker who already possesses valid low-privilege credentials can execute the attack over the network.

Root Cause

The root cause is missing or inadequate input neutralization in a SQL-handling code path exposed to authenticated users. Query construction concatenates untrusted input rather than using parameterized statements or strict allow-list validation, allowing the attacker to inject SQL syntax that the backend database interprets as part of the executed query.

Attack Vector

The attack vector is network-based and requires authentication. An attacker submits a crafted request containing SQL metacharacters through an interface that constructs database queries from that input. The backend executes the tainted query and returns data that would otherwise be inaccessible. See the IBM Support Page for vendor-specific technical details.

Detection Methods for CVE-2026-84105

Indicators of Compromise

Unexpected SQL syntax such as UNION SELECT, OR 1=1, inline comments (--, /* */), or stacked queries appearing in Guardium application logs.
Authenticated sessions issuing anomalously large or repetitive queries against Guardium backend databases.
Outbound data volumes from the Guardium appliance that deviate from established baselines.

Detection Strategies

Enable and review application-layer logging on the Guardium interface to capture request parameters submitted by authenticated users.
Correlate authentication events with database query patterns to identify accounts issuing malformed or injection-style input.
Deploy signatures on inline web application firewalls or reverse proxies to flag SQL injection payloads targeting Guardium endpoints.

Monitoring Recommendations

Monitor low-privilege Guardium accounts for privilege boundary violations and access to records outside their normal scope.
Alert on failed SQL parse errors returned by the Guardium backend, which often precede successful injection attempts.
Track access to sensitive Guardium tables and configuration objects for read patterns inconsistent with the account role.

How to Mitigate CVE-2026-84105

Immediate Actions Required

Apply the IBM security update referenced on the IBM Support Page for Guardium Data Protection 12.2.
Audit Guardium user accounts and remove or disable unused low-privilege accounts to reduce the pool of potential attackers.
Rotate credentials for any account suspected of exposure, particularly service and integration accounts.

Patch Information

IBM has published remediation guidance for CVE-2026-84105 on the IBM Support Page. Administrators should follow the vendor's upgrade path for Guardium Data Protection 12.2 and validate the fix in a staging environment before production rollout.

Workarounds

Restrict network access to the Guardium management interface to trusted administrative networks only.
Enforce least-privilege role assignments so authenticated users cannot reach the vulnerable code path where possible.
Deploy a web application firewall with SQL injection signatures in front of the Guardium interface until the patch is applied.

bash

# Example: restrict Guardium management interface to an administrative subnet
iptables -A INPUT -p tcp --dport 8443 -s 10.10.20.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 8443 -j DROP