# CVE-2026-84035: IBM Guardium Data Protection stack-based buffer overflow

Source: https://junglewise.ai/threats/cve-2026-84035-ibm-guardium-data-protection-12-0-12-1-and-12-2-could-allow-a  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-08. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-84035 · Severity: high · CVSS 8.1 · Published 2026-10-08

IBM Guardium Data Protection is a database security appliance that monitors and protects sensitive data in enterprise databases. A remote attacker can exploit a stack-based buffer overflow vulnerability to execute arbitrary code on affected systems, potentially allowing complete compromise of database security controls and access to protected data.

Technologies: [IBM Guardium Data Protection](https://junglewise.ai/threats/technologies/guardium-data-protection). Vendors: [IBM](https://junglewise.ai/threats/vendors/ibm).

## Quick answers

**Is CVE-2026-84035 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-84035 being exploited in the wild.

**How severe is CVE-2026-84035?** High severity, with a CVSS score of 8.1, published 8 October 2026.

**Which products and versions are affected?** IBM Guardium Data Protection 12.0, 12.1, 12.2.

**Is there a fix for CVE-2026-84035?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-84035 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-84035?** Check whether you run IBM Guardium Data Protection at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A stack-based buffer overflow (CWE-121) in the Sniffer component of IBM Guardium Data Protection allows remote code execution. The vulnerability is triggered by sending specially crafted network packets to a monitored database connection; no authentication or user interaction is required, though the attack has high complexity due to memory layout requirements.

## Affected products

- IBM Guardium Data Protection 12.0, 12.1, 12.2

## Timeline

- 2026-10-08: disclosed

## References

- [https://www.ibm.com/support/pages/node/7291674](https://www.ibm.com/support/pages/node/7291674)

## Related threats

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- [IBM Guardium Data Protection SQL injection](https://junglewise.ai/threats/cve-2026-84030-ibm-guardium-data-protection-12-2-4-could-allow-a-remote-attacker)
- [IBM Guardium Data Protection argument injection](https://junglewise.ai/threats/cve-2026-82830-ibm-guardium-data-protection-12-2-4-could-allow-a-remote)
- [IBM Guardium Data Protection hard-coded cryptographic key exposure](https://junglewise.ai/threats/cve-2026-82891-ibm-guardium-data-protection-12-1-and-12-2-could-allow-a-remote)
- [IBM Guardium Data Protection 12.0, 12.1, and 12.2 could allow a local attacker to obtain sensitive information due to…](https://junglewise.ai/threats/cve-2026-87980-ibm-guardium-data-protection-12-0-12-1-and-12-2-could-allow-a)