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CVE-2026-33727— Pi-hole has a Local Privilege Escalation (post-compromise, pihole -> root).

Quick assessment

Affected
pi-hole pi-hole
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.

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。

CVSS 6.4 · Medium EPSS 0.22% · P12

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation
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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: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5
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

Vendor Product Affected Versions CPE Subscribe
pi-hole pi-hole >= 6.4, < 6.4.1 -

II. Public POCs for CVE-2026-33727

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III. Intelligence Information for CVE-2026-33727

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Vendor Advisories for CVE-2026-33727 (1)

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

IV. Related Vulnerabilities

Same product: pi-hole
Same vendor: pi-hole
Same weakness: CWE-269

V. Comments for CVE-2026-33727

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