# CVE-2026-67073: HCL BigFix AEX unrestricted file upload and improper access control

Source: https://junglewise.ai/threats/cve-2026-67073-hcl-bigfix-aex-is-affected-by-an-unrestricted-file-upload-and  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-28. Updated: 2026-10-28  
License: CC BY 4.0 with a link back

CVE-2026-67073 · Severity: high · CVSS 8.6 · Published 2026-10-28

HCL BigFix AEX is an enterprise application extension platform used for managing and extending business applications. An attacker can upload malicious files without proper restrictions and access sensitive uploaded content, leading to unauthorized system access, data theft, or malware installation.

Technologies: [HCL BigFix AEX](https://junglewise.ai/threats/technologies/bigfix-aex). Vendors: [HCL](https://junglewise.ai/threats/vendors/hcl).

## Quick answers

**Is CVE-2026-67073 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-67073 being exploited in the wild.

**How severe is CVE-2026-67073?** High severity, with a CVSS score of 8.6, published 28 October 2026.

**Which products and versions are affected?** HCL BigFix AEX.

**Is there a fix for CVE-2026-67073?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-67073 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-67073?** Check whether you run HCL BigFix AEX. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is an unrestricted file upload flaw combined with improper access control in HCL BigFix AEX. An attacker can upload arbitrary files and bypass access controls to download sensitive content, potentially achieving remote code execution or data exfiltration depending on how uploaded files are processed by the application.

## Affected products

- HCL BigFix AEX

## Timeline

- 2026-10-28: disclosed

## References

- [https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0134281](https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0134281)

## Related threats

- [HCL BigFix AEX information disclosure in error handling](https://junglewise.ai/threats/cve-2026-67080-hcl-bigfix-aex-is-affected-by-an-information-disclosure)
- [HCL BigFix AEX clickjacking vulnerability](https://junglewise.ai/threats/cve-2026-67079-hcl-bigfix-aex-is-affected-by-a-clickjacking-vulnerability-which)
- [HCL BigFix AEX server-side request forgery](https://junglewise.ai/threats/cve-2026-67077-hcl-bigfix-aex-is-affected-by-a-server-side-request-forgery)
- [HCL BigFix AEX remote code execution](https://junglewise.ai/threats/cve-2026-67074-hcl-bigfix-aex-is-affected-by-a-remote-code-execution)