CVE-2026-4556— macOS Exam4 Local Privilege Escalation via Command Injection
Quick assessment
Affected
Extegrity Exam4
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Exam4 存在一个本地提权漏洞，位于通过 XPC 与应用通信的特权辅助程序 com.extegrity.LogTool 中。该方法 使用攻击者可控的参数执行 syslog 命令，且未进行适当的输入净化，从而导致命令注入漏洞。成功利用该漏洞后，本地攻击者可通过 LaunchSynchronous 机制以 root 权限执行任意命令。
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I. Basic Information for CVE-2026-4556
Vulnerability Information
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Vulnerability Title
macOS Exam4 Local Privilege Escalation via Command Injection
Source: CVE Program / CVE List V5
Vulnerability Description
Exam4 is affected by a local privilege escalation vulnerability in the com.extegrity.LogTool privileged helper, which communicates with the application via XPC. The [ConsoleLogHelper copyConsoleIntoFileFromStartDate:] method executes a syslog command using attacker-controlled parameters without proper sanitization, enabling command injection. Successful exploitation allows a local attacker to execute arbitrary commands with root privileges through LaunchSynchronous.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-4556
| # | POC Description | Source Link | Shenlong Link |
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V. Comments for CVE-2026-4556
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