CVE-2021-32706 is a critical code injection vulnerability affecting Pi-hole Web interface versions prior to 5.5.1. The flaw stems from an unescaped period in the validDomainWildcard preg_match filter, allowing authenticated attackers to execute arbitrary code, list directories, and overwrite sensitive files. With a CVSS score of 8.8 (High), this vulnerability is easily exploitable over the network with low attack complexity and no user interaction required, leading to high impact on confidentiality, integrity, and availability. While not currently on CISA's KEV catalog, a Metasploit module exists for exploitation, indicating readily available exploit code. Despite this, there is no evidence of active exploitation or significant community discussion.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 5.5.1CPE matchmatch criteria | cpe:2.3:a:pi-hole:pi-hole:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.