High severity · published Feb 3, 2026
CVE-2025-52631
HCL AION is affected by a Missing or Insecure HTTP Strict-Transport-Security (HSTS) Header vulnerability.
8.1
CVSS
0.2%
EPSS
No
On KEV
Description
HCL AION is affected by a Missing or Insecure HTTP Strict-Transport-Security (HSTS) Header vulnerability. This can allow insecure connections, potentially exposing the application to man-in-the-middle and protocol downgrade attacks.. This issue affects AION: 2.0.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AI
AION · HCL
2.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-52631
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-52631
Vendor Advisory
https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0127972
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