High severity · published Jul 16, 2026
CVE-2026-56455
HCL DFXAnalytics is affected by a Buffer Overflow vulnerability that can lead to a Denial of Service (DoS).
7.5
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 40% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DF
DFXAnalytics · HCL Software
version 3.0 and below · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-56455
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-56455
Vendor Advisory
https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0131787
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