Unauthenticated remote heap-overflow leading to DoS or RCE in an enterprise data-protection appliance (IBM Guardium) used across organizations; high-impact on monitored databases and security infrastructure.
CVE-2026-82344
Unauthenticated heap overflow RCE in IBM Guardium S-TAP login reassembly
Is CVE-2026-82344 being exploited?
Not confirmed. CVE-2026-82344 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.40% probability of exploitation in the next 30 days.
How severe is CVE-2026-82344?
CVE-2026-82344 is rated High with a CVSS score of 8.1. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-82344?
Yes. A fix has been recorded for CVE-2026-82344. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-82344 affect?
CVE-2026-82344 affects IBM Guardium Data Protection 12.0, IBM Guardium Data Protection 12.1. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-82344?
Apply vendor patch when available; until then isolate S-TAP/TDS endpoints and block malicious TDS fragments at network edge.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote unauthenticated heap overflow via crafted TDS login fragments enabling denial of service or remote code execution on Guardium appliances.
Immediate action required
- affected12.0
- affected12.1
- affected12.2
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.