CVE-2025-52631
Published: 03 February 2026
Summary
CVE-2025-52631 is a low-severity Exposure of Sensitive Information to an Unauthorized Actor (CWE-200) vulnerability in Hcltech Aion. Its CVSS base score is 3.7 (Low).
Operationally, exploitation aligns with the MITRE ATT&CK technique Adversary-in-the-Middle (T1557); ranked at the 13.9th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Automated marking applies security attributes to system outputs, making it harder for attackers to exploit unmarked sensitive information leading to unauthorized exposure.
Proper attribute retention and permitted-value enforcement limits unauthorized actors from accessing sensitive information lacking correct labels.
Prevents unauthorized exposure of sensitive information by prohibiting untrusted external systems from processing or storing it.
By enforcing authorization matching prior to sharing, the control reduces the risk of exposing sensitive information to unauthorized actors.
Review and removal of nonpublic information from publicly accessible systems directly prevents exposure of sensitive data to unauthorized actors.
Data mining protection mechanisms detect and block unauthorized bulk extraction of sensitive data, directly mitigating exposure to unauthorized actors.
Literacy training teaches users to recognize and avoid actions that result in unauthorized exposure of sensitive information.
Retaining and monitoring training records confirms personnel have completed privacy and security awareness training on handling sensitive data, reducing the chance of unauthorized exposure due to lack of knowledge.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Missing HSTS directly enables Adversary-in-the-Middle attacks via connection interception and protocol downgrade on web traffic.
NVD 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.
Deeper analysisAI
CVE-2025-52631, published on 2026-02-03, is a Missing or Insecure HTTP Strict-Transport-Security (HSTS) Header vulnerability affecting HCL AION version 2.0. Mapped to CWE-200, it has a CVSS v3.1 base score of 3.7 (AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:L). The flaw enables insecure connections, potentially exposing the application to man-in-the-middle attacks and protocol downgrades.
Exploitation is possible over the network by an attacker with low privileges who must overcome high attack complexity and rely on user interaction. Successful attacks can achieve low-impact effects on confidentiality and availability, with no integrity impact.
Mitigation details are available in the HCL support advisory at https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0127972.
Details
- CWE(s)