CVE-2026-56455 HCL DFXAnalytics is affected by a Buffer Overflow vulnerability that can lead to a Denial of Service (DoS).

Medium 5.3 Published 16 Jul 2026 Updated 16 Jul 2026

An attacker can cause a denial of service in HCL DFXAnalytics by exploiting a buffer overflow via excessive input, requiring input validation fixes.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-56455?

CVE-2026-56455 is a medium-severity memory corruption vulnerability in HCL Software DFXAnalytics, published on 16 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

HCL DFXAnalytics is affected by a Buffer Overflow vulnerability that can lead to a Denial of Service (DoS). The application fails to properly validate input sizes, allowing an attacker to pass an excessive amount of information into a memory container, which can cause the system to crash or become unresponsive. To mitigate this flaw, comprehensive input length checks must be implemented and enforced on both the client and server sides.

Weakness: CWE-121

Which versions are affected by CVE-2026-56455?

It affects 1 product.

Products include Hcltech Dfxanalytics.

How do I fix CVE-2026-56455?

No fix has been published for CVE-2026-56455 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-56455 being exploited?

There is no known exploitation of CVE-2026-56455 in the wild and no public exploit code.

Sources

Also known as GHSA-c4fr-5qh5-c6fh.