CVE-2026-56455 dfxanalytics vulnerability
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.
Browse Denial of Service security risksQuick answer
hcltech dfxanalytics should be reviewed and updated if it matches the affected versions. The recommended fix is to apply the vendor-supported patched version or the mitigation steps below, then retest the public website with Fixnx.
Who is affected
Affected versions
- Review vendor advisory for affected versions.
Fixed versions
- Apply the latest vendor-supported patched version.
How to fix it
CVE-2026-56455 affects HCL DFXAnalytics. The issue can make the service crash or stop responding. Apply the vendor fix and harden the web and session settings around DFXAnalytics.
- Apply the HCL DFXAnalytics update or vendor mitigation that fixes CVE-2026-56455.
- Restrict access to the DFXAnalytics dashboard to trusted users and networks.
- Disable debug output and make sure errors do not expose file paths, IP addresses, or internal details.
- Harden transport and session settings: use TLS 1.2 or 1.3, HSTS, Secure cookies, SameSite cookies, and anti-CSRF controls where relevant.
- Review application, proxy, and authentication logs for signs of crashes, replay attempts, account changes, or suspicious response manipulation.
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Verify the fix
- Confirm DFXAnalytics is on a fixed vendor version or has the vendor mitigation applied.
- Run a fresh scan and confirm this CVE no longer appears.
- Check response headers, TLS settings, and error pages from a browser or scanner.
Related categories
Related security risks
More published guidance from the same primary category.
Trusted references
FAQ
What is affected by CVE-2026-56455?
hcltech dfxanalytics should be checked against the vendor advisory and trusted references linked on this page.
What should I fix first?
Start with internet-facing sites, admin panels, login flows, plugins, themes, modules, packages, and systems that process user-controlled input or sensitive data.
How do I confirm the fix worked?
Apply the patched version or mitigation, clear caches where relevant, retest the affected workflow, and run a new Fixnx scan to verify public website exposure signals.
How are Fixnx security risk categories chosen?
Fixnx keeps one canonical risk page and assigns only broad, relevant categories such as ecosystem, technology area, or vulnerability class.