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

Medium 6.4 Published 6 Apr 2026 Updated 7 Apr 2026

A local privilege escalation allows attackers with pihole account access to execute code as root via compromised version files.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-33727?

CVE-2026-33727 is a medium-severity vulnerability in pi-hole, published on 6 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-269

Which versions are affected by CVE-2026-33727?

It affects 1 product.

Products include Pi-Hole Pi-Hole.

How do I fix CVE-2026-33727?

No fix has been published for CVE-2026-33727 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-33727 being exploited?

There is no known exploitation of CVE-2026-33727 in the wild and no public exploit code.

Sources

Also known as GHSA-c935-8g63-qp74.