Is CVE-2026-33727 actively exploited?

CVE-2026-33727 has no public evidence of in-the-wild exploitation as of 2026-04-09.

What is the CVSS score for CVE-2026-33727?

CVE-2026-33727 has a CVSS score of 6.4 (MEDIUM severity). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2026-33727?

Patch guidance is available from pi-hole security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-33727.

CVE-2026-33727 - remediation guidance & executive summary

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.

CVSS Metrics

Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack Vector: local
Complexity: high
Privileges: high
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-269 · Improper Privilege Management

Metadata

Primary Vendor: PI-HOLE
Published: 4/6/2026
Last Modified: 4/9/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2026-33727

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary