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CVE-2026-2638— X-VPN macOS website versions - Local Privilege Escalation

AI Predicted 7.8 Difficulty: Moderate EPSS 0.08% · P0

Possible ATT&CK Techniques 1AI

T1222.002 · Linux and Mac Permissions

Affected Version Matrix 1

VendorProductVersion RangeStatus
X-VPNX-VPN macOS website77.0≤ 77.5affected
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I. Basic Information for CVE-2026-2638

Vulnerability Information
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Vulnerability Title
X-VPN macOS website versions - Local Privilege Escalation
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in the quarantine and restore workflow of the X-VPN macOS website versions 77.0 through 77.5 allow a local attacker to leverage a race condition and symlink manipulation to achieve privileged file corruption.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
检查时间与使用时间(TOCTOU)的竞争条件
Source: NVD (National Vulnerability Database)
Vulnerability Title
LIGHTNINGLINK X-VPN 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
LIGHTNINGLINK X-VPN是LIGHTNINGLINK公司的一款虚拟专用网络服务客户端。 LIGHTNINGLINK X-VPN 77.0版本至77.5版本存在安全漏洞，该漏洞源于隔离和恢复工作流中的竞争条件和符号链接操作，可能导致本地攻击者实现特权文件损坏。
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

VendorProductAffected VersionsCPESubscribe
X-VPNX-VPN macOS website 77.0 ~ 77.5 -

II. Public POCs for CVE-2026-2638

#POC DescriptionSource LinkShenlong Link
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III. Intelligence Information for CVE-2026-2638

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Vendor Advisories for CVE-2026-2638 (2)

Vendor Pages for CVE-2026-2638 (1)

Other References for CVE-2026-2638 (1)

IV. Related Vulnerabilities

Same weakness: CWE-367

V. Comments for CVE-2026-2638

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