CVE-2026-33727— Pi-hole has a Local Privilege Escalation (post-compromise, pihole -> root).
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I. Basic Information for CVE-2026-33727
Vulnerability Information
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Vulnerability Title
Pi-hole has a Local Privilege Escalation (post-compromise, pihole -> root).
Source: NVD (National Vulnerability Database)
Vulnerability Description
Pi-hole is a Linux network-level advertisement and Internet tracker blocking application. Version 6.4 has a local privilege-escalation vulnerability allows code execution as root from the low-privilege pihole account. Important context: the pihole account uses nologin, so this is not a direct interactive-login issue. However, nologin does not prevent code from running as UID pihole if a Pi-hole component is compromised. In that realistic post-compromise scenario, attacker-controlled content in /etc/pihole/versions is sourced by root-run Pi-hole scripts, leading to root code execution. This vulnerability is fixed in 6.4.1.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
特权管理不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Pi-hole 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Pi-hole是Pi-hole公司的一款网络级广告拦截应用程序。 Pi-hole 6.4版本存在安全漏洞，该漏洞源于本地权限提升，可能导致从低权限账户执行root代码。
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
II. Public POCs for CVE-2026-33727
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Same Patch Batch · pi-hole · 2026-04-06 · 5 CVEs total
| CVE-2026-33403 | 6.1 MEDIUM | Pi-hole has a Reflected XSS / HTML injection in taillog.js |
| CVE-2026-33406 | 5.4 MEDIUM | Pi-hole has a Stored HTML attribute injection |
| CVE-2026-33404 | 3.4 LOW | Pi-hole has a Stored XSS / HTML injection in the Network page/Dashboard |
| CVE-2026-33405 | 3.1 LOW | Pi-hole has a Stored HTML Injection in queries.js |
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Pi-hole FTL affected by Remote Code Execution (RCE) via dhcp - CVE-2026-35519
Pi-hole FTL affected by Remote Code Execution (RCE) via dns. - CVE-2026-35518
Pi-hole FTL affected by Remote Code Execution (RCE) via dns.
Same weakness: CWE-269
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V. Comments for CVE-2026-33727
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