CVE-2021-37334 is a critical remote code execution and arbitrary file deletion vulnerability affecting Umbraco Forms versions 4.0.0 through 8.7.5. The flaw stems from improper file extension validation, allowing attackers to upload malicious files to a temporary directory and then overwrite the web.config file to execute arbitrary code. With a CVSS score of 9.8 (Critical), this vulnerability is easily exploitable over the network with low attack complexity, potentially leading to complete compromise of confidentiality, integrity, and availability. While no active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB) has been identified, and community discussion is minimal, the high FAUCET Risk Score of 80/100 indicates significant potential danger.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 4.0.0, < 4.4.9CPE matchmatch criteria | cpe:2.3:a:umbraco:forms:*:*:*:*:*:*:*:* | ||
>= 6.0.0, < 6.0.10CPE matchmatch criteria | cpe:2.3:a:umbraco:forms:*:*:*:*:*:*:*:* | ||
>= 7.0.0, < 7.0.7CPE matchmatch criteria | cpe:2.3:a:umbraco:forms:*:*:*:*:*:*:*:* | ||
>= 7.1.0, < 7.1.4CPE matchmatch criteria | cpe:2.3:a:umbraco:forms:*:*:*:*:*:*:*:* | ||
>= 7.2.0, < 7.2.1CPE matchmatch criteria | cpe:2.3:a:umbraco:forms:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.