Vulnerability · Published Jun 24, 2026 · Assigned by zdi

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

High 7.2

In plain English

A high-severity security flaw in Unizon from ATEN. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 53% of all known vulnerabilities).

Severity (CVSS 3.0)7.2High

Exploit odds (30 days)0.7%top 47.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
ATEN	Unizon	2.6.253.001

Weakness: CWE-347 · Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

References

ZDI-26-383 x_research-advisory
vendor-provided URL vendor-advisory