Quick answers
- Is CVE-2026-84198 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-84198 being exploited in the wild.
- How severe is CVE-2026-84198?
- 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-2026-84198?
- Yes: fixed in IBM Guardium Data Protection Sniffer patch (SqlGuard_12.0p4018_SnifferUpdate or later). Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-84198 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-84198?
- 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.
How to fix
- Fixed in: IBM Guardium Data Protection Sniffer patch (SqlGuard_12.0p4018_SnifferUpdate or later)
Technical details
CVE-2026-84198 is a classic buffer overflow (CWE-120) in the Sniffer component's network packet parsing. A remote attacker without authentication can send a malicious packet with oversized input to trigger memory corruption and execute arbitrary code; the attack requires no user interaction but has high complexity (AC:H). The advisory addresses multiple related buffer overflow vulnerabilities in versions 12.0–12.2 with a patch to the Sniffer component.
Affected products
- IBM Guardium Data Protection 12.0, 12.1, 12.2
Timeline
- 2026-10-08: disclosed