CVE-2020-9471 describes a critical vulnerability in Umbraco Cloud version 8.5.3, allowing authenticated attackers to achieve Remote Code Execution (RCE) through the "Install Packages" functionality via arbitrary file upload. This vulnerability carries a high CVSS score of 8.8, indicating a severe risk due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. While no public exploit code (Metasploit, Nuclei, ExploitDB) or active exploitation (KEV) has been observed, and community discussion is minimal, the potential for a devastating impact remains significant.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
8.5.3CPE matchmatch criteria | cpe:2.3:a:umbraco:umbraco_cms:8.5.3:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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.