Quick answers
- Is CVE-2026-6794 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-6794 being exploited in the wild.
- How severe is CVE-2026-6794?
- High severity, with a CVSS score of 7.8, published 23 September 2026.
- Which products and versions are affected?
- IBM Concert 1.0.0 through 3.0.0.
- Is there a fix for CVE-2026-6794?
- 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-2026-6794 attacked?
- It is attacked with local access.
- Am I affected by CVE-2026-6794?
- Check whether you run IBM Concert 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 double free vulnerability exists in IBM Concert versions 1.0.0 through 3.0.0 due to incorrect memory management, allowing a local authenticated attacker to corrupt heap memory and achieve arbitrary code execution in the context of the affected process. The vulnerability requires local access and is triggered through memory deallocation operations that attempt to free the same memory region twice, resulting in heap corruption exploitable for code execution.
Affected products
- IBM Concert 1.0.0 through 3.0.0
Timeline
- 2026-09-23: disclosed