8.8
CVE-2026-41489
- EPSS 0.13%
- Veröffentlicht 11.05.2026 20:21:38
- Zuletzt bearbeitet 13.05.2026 16:16:45
- Quelle security-advisories@github.com
- CVE-Watchlists
- Unerledigt
Pi-hole: Local privilege escalation via config-controlled path in root-executed service hooks
Pi-hole is a DNS sinkhole that protects devices from unwanted content without installing any client-side software. From 6.0 to before Core 6.4.2 and FTL 6.6.1, two shell scripts executed as root by systemd (pihole-FTL-prestart.sh and pihole-FTL-poststop.sh) read the files.pid path from this config without validation and use it in privileged file operations (install and rm -f). By writing an arbitrary path into files.pid, an attacker with pihole privilege can cause root to delete and then recreate any file on the system outside the ProtectSystem=full-restricted directories, gaining write access to it. On a default Pi-hole installation this yields local privilege escalation to root via SSH authorized keys manipulation. If /root/.ssh/authorized_keys does not exist (default on fresh installs), only ExecStartPre is required. If the file exists, ExecStopPost deletes it first, and the same restart triggers both hooks in sequence. This vulnerability is fixed in Core 6.4.2 and FTL 6.6.1.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
Herstellerpi-hole
≫
Produkt
pi-hole
Version
>= 6.0, < 6.4.2
Status
affected
VulnDex Vulnerability Enrichment
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Login
Login| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.13% | 0.03 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| security-advisories@github.com | 8.8 | 2 | 6 |
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
|
CWE-15 External Control of System or Configuration Setting
One or more system settings or configuration elements can be externally controlled by a user.
CWE-269 Improper Privilege Management
The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
CWE-732 Incorrect Permission Assignment for Critical Resource
The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.
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https://github.com/pi-hole/pi-hole/security/advisories/GHSA-6w8x-p785-6pm4