What’s Vulnerable › Vulnerabilities

CVE-2026-9779: ATEN Unizon doCryptoHugeFileToFile Improper Verification of Cryptographic Signature Remote Code Execution Vulnerability

• Severity: high (CVSS 7.2 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-24 · updated 2026-10-25
• Weakness: CWE-347

Description

ATEN Unizon doCryptoHugeFileToFile Improper Verification of Cryptographic Signature Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of ATEN Unizon. Authentication is required to exploit this vulnerability. The specific flaw exists within the updateWar method. The issue results from an incorrect implementation of cryptographic signature verification. An attacker can leverage this vulnerability to execute code in the context of SYSTEM. Was ZDI-CAN-28590.

Affected products

• ATEN Unizon: before 2.7.264 — fixed in 2.7.264

How to fix

Upgrade to a fixed version: ATEN Unizon 2.7.264. Check the vendor advisory for mitigations.

References

• https://www.aten.com/global/en/supportcenter/info/security-advisory/32/
• https://www.zerodayinitiative.com/advisories/ZDI-26-383/

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