AION: Use of Web Browser Cache Containing Sensitive Information
CVE-2025-52659 is a high-severity use of web browser cache containing sensitive information vulnerability in AION from HCL Software, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected AION versions: 2. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.19% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of AION you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on support.hcl-software.com for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| HCL Software | AION | 2 | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- NoneNothing can be modified.
- Availability
- NoneAvailability is not affected.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 2.8 | Low | CNA (hcl.com) |
| CVSS 3.1 | 7.5 | High | NVD |
Official description
HCL AION version 2 is affected by a Cacheable HTTP Response vulnerability. This may lead to unintended storage of sensitive or dynamic content, potentially resulting in unauthorized access or information disclosure.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Use of Web Browser Cache Containing Sensitive Information
The web application does not use an appropriate caching policy that specifies the extent to which each web page and associated form fields should be cached.
How developers prevent this class of flaw
- Use a restrictive caching policy for forms and web pages that potentially contain sensitive information, such as no-cache in the Cache-Control header.
- Do not store unnecessarily sensitive information in the cache.
More Use of Web Browser Cache Containing Sensitive Information vulnerabilities (CWE-525)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Advisories
Other vulnerabilities in AION
- 9.8 Critical severity
- 9.8 Critical severity
- 9.8 Critical severity
Recent Use of Web Browser Cache Containing Sensitive Information vulnerabilities
- 7.5 High severity
- 7.7 High severity
- 7.5 High severity
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