Quick answers
- Is CVE-2026-56455 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-56455 being exploited in the wild.
- How severe is CVE-2026-56455?
- Medium severity, with a CVSS score of 5.3, published 16 July 2026.
- Which products and versions are affected?
- HCL Software DFXAnalytics 3.0 and below.
- Is there a fix for CVE-2026-56455?
- 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-2026-56455 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-56455?
- Check whether you run HCL Software DFXAnalytics 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) exists in HCL DFXAnalytics versions 3.0 and below. The vulnerability is caused by insufficient validation of input lengths when processing data, allowing an attacker to overwrite memory containers. This is a network-reachable exploit that requires no authentication or user interaction. Successful exploitation results in a Denial of Service (DoS) condition where the application crashes or becomes unresponsive. Mitigation requires implementing comprehensive input length checks on both the client and server sides.
Affected products
- HCL Software DFXAnalytics 3.0 and below
Timeline
- 2026-07-16: advisory: Initial advisory published by HCL Software and NVD