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CVE-2026-16791— Predictable Temporary File Symlink Vulnerability in Lenovo XClarity Essentials OneCLI

Quick assessment

Affected
Lenovo XClarity Essentials OneCLI
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.

Lenovo XClarity Essentials OneCLI是中国Lenovo公司的一款服务器管理命令行工具。 Lenovo XClarity Essentials OneCLI 5.5.0及之前版本存在资源管理错误漏洞，该漏洞源于临时文件创建不当，可能导致本地低权限攻击者在OneCLI以提升权限执行时覆盖或截断任意本地文件。

CVSS 3.9 · Low EPSS 0.13% · P2

Possible ATT&CK Techniques 1 AI

T1222.001 · Windows Permissions

Affected Version Matrix 1

VendorProduct Version RangeStatus
Lenovo XClarity Essentials OneCLI < 5.6 affected
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I. Basic Information for CVE-2026-16791

Vulnerability Information
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Vulnerability Title
Predictable Temporary File Symlink Vulnerability in Lenovo XClarity Essentials OneCLI
Source: CVE Program / CVE List V5
Vulnerability Description
A temporary file creation vulnerability in the Linux version of Lenovo XClarity Essentials OneCLI 5.5.0 and below could allow a local low-privileged attacker to overwrite or truncate arbitrary local files with program-generated data when OneCLI is executed with elevated privileges.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
不安全的临时文件
Source: CVE Program / CVE List V5
Vulnerability Title
Lenovo XClarity Essentials OneCLI 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Lenovo XClarity Essentials OneCLI是中国Lenovo公司的一款服务器管理命令行工具。 Lenovo XClarity Essentials OneCLI 5.5.0及之前版本存在资源管理错误漏洞，该漏洞源于临时文件创建不当，可能导致本地低权限攻击者在OneCLI以提升权限执行时覆盖或截断任意本地文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Lenovo XClarity Essentials OneCLI 0 ~ 5.6 -

II. Public POCs for CVE-2026-16791

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III. Intelligence Information for CVE-2026-16791

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Vendor Advisories for CVE-2026-16791 (1)

Same Patch Batch · Lenovo · 2026-08-04 · 3 CVEs total

CVE-2026-16793 8.8 HIGH Remote Command Injection via OS Profile Password in Lenovo XClarity Orchestrator
CVE-2026-16792 6.1 MEDIUM Global TLS Certificate Validation Bypass in Lenovo XClarity Orchestrator

IV. Related Vulnerabilities

Same vendor: Lenovo
Same weakness: CWE-377

V. Comments for CVE-2026-16791

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