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TI-2021-12374 Aliases CVE-2021-32706

(Authenticated) Remote Code Execution Possible in Web Interface 5.5

Priority HIGH 72CWE-94Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-94.

Summary

Pi-hole's Web interface provides a central location to manage a Pi-hole instance and review performance statistics. Prior to Pi-hole Web interface version 5.5.1, the `validDomainWildcard` preg_match filter allows a malicious character through that can be used to execute code, list directories, and overwrite sensitive files. The issue lies in the fact that one of the periods is not escaped, allowing any character to be used in its place. A patch for this vulnerability was released in version 5.5.1.

Why it matters now

EPSS 0.60181 99th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed AdminLTE (pi-hole): 5.5.1

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
Pi-holeAdminLTEbefore 5.5.15.5.1Patch availableCNA
  • AdminLTE VendorPi-hole Affected before 5.5.1 Fixed in 5.5.1 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:pi-hole:pi-hole:*:*:*:*:*:*:*:*before 5.5.1VulnerablePi-hole
  • cpe:2.3:a:pi-hole:pi-hole:*:*:*:*:*:*:*:* Versions before 5.5.1 Vulnerable ·Pi-hole

Remediation

  • Fix · CNA AdminLTE (pi-hole) Fixed in 5.5.1

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-32706

References

Exploit 1

Advisory 1

  • TI-2020-07073 Pi-hole Web v4.3.2 (aka AdminLTE) allows Remote Code Execution by privileged dashboard… KEVCVSS 3.1HIGH 7.2
  • TI-2020-08981 The Gravity updater in Pi-hole through 4.4 allows an authenticated adversary to upload… CVSS 3.1HIGH 8.8
  • TI-2026-36901 Pi-hole: Local privilege escalation from `pihole` user to root via `/etc/pihole/logrotate` CVSS 3.1HIGH 8.8
  • TI-2024-22701 Pi-hole Blind Server-Side Request Forgery (SSRF) vulnerability can lead to Remote Code Execution (RCE) CVSS 3.1HIGH 8.8
  • TI-2024-18806 Pihole Authenticated Arbitrary File Read with root privileges CVSS 3.1HIGH 7.6
  • TI-2025-24251 Pi-Hole AdminLTE Whitelist (now 'Web Allowlist') Remote Command Execution CVSS 4.0CRITICAL 9.0
See all 18 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences