# CVE-2026-9775: ATEN Unizon directory traversal in uploadSSL

Source: https://junglewise.ai/threats/cve-2026-9775-aten-unizon-directory-traversal-in-uploadssl  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-24. Updated: 2026-06-24  
License: CC BY 4.0 with a link back

CVE-2026-9775 · Severity: medium · CVSS 5.5 · Published 2026-06-24

ATEN Unizon, a centralized management platform for AV and IT devices, contains a security flaw in its SSL certificate upload process. An authenticated administrator can exploit this flaw to delete critical system files by manipulating file paths. This could lead to a complete service outage or permanent loss of configuration data, disrupting business operations.

Technologies: [ATEN Unizon](https://junglewise.ai/threats/technologies/unizon). Vendors: [ATEN](https://junglewise.ai/threats/vendors/aten).

## Quick answers

**Is CVE-2026-9775 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-9775 being exploited in the wild.

**How severe is CVE-2026-9775?** Medium severity, with a CVSS score of 5.5, published 24 June 2026.

**Which products and versions are affected?** ATEN Unizon 2.7.262.002 and earlier.

**Is there a fix for CVE-2026-9775?** A patch was published on 2026-04-15: Fixed version FW V2.7.264.001 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-9775 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-9775?** Check whether you run ATEN Unizon at an affected version. 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

A directory traversal vulnerability exists within the uploadSSL method of ATEN Unizon, specifically at the /rest/system/ssl endpoint. The application fails to properly validate user-supplied pathnames during SSL certificate upload operations. An authenticated attacker with high privileges can provide a manipulated filename containing traversal sequences (e.g., ../) to target and delete files outside of the intended directory. This can result in a denial-of-service condition by removing critical system or application files. The vulnerability is addressed in firmware version 2.7.264.001.

## Affected products

- ATEN Unizon 2.7.262.002 and earlier

## Timeline

- 2026-03-13: disclosed: Vulnerability reported to vendor
- 2026-04-15: patched: Fixed version FW V2.7.264.001 released
- 2026-06-24: advisory: Coordinated public release of advisory

## References

- [https://www.aten.com/global/en/supportcenter/info/security-advisory/28/](https://www.aten.com/global/en/supportcenter/info/security-advisory/28/)
- [https://www.zerodayinitiative.com/advisories/ZDI-26-379/](https://www.zerodayinitiative.com/advisories/ZDI-26-379/)

## Related threats

- [ATEN Unizon missing authentication in RpcProvider](https://junglewise.ai/threats/cve-2026-5057-aten-unizon-missing-authentication-in-rpcprovider)
- [ATEN Unizon remote code execution via improper signature verification](https://junglewise.ai/threats/cve-2026-9779-aten-unizon-remote-code-execution-via-improper-signature)
- [ATEN Unizon directory traversal remote code execution in ImportDeviceList](https://junglewise.ai/threats/cve-2026-9778-aten-unizon-directory-traversal-remote-code-execution-in)
- [ATEN Unizon directory traversal in restoreDB method](https://junglewise.ai/threats/cve-2026-9777-aten-unizon-directory-traversal-in-restoredb-method)
- [ATEN Unizon directory traversal in writeFileToHttpServletResponse](https://junglewise.ai/threats/cve-2026-9776-aten-unizon-directory-traversal-in-writefiletohttpservletresponse)