CVE-2021-33790 is a critical remote code execution vulnerability in the RebornCore library (versions prior to 4.7.3), affecting Minecraft and related mods like TechReborn. This flaw stems from insecure deserialization of untrusted data, allowing an unauthenticated attacker to execute arbitrary code on the server. With a CVSS score of 9.8, it presents a severe risk due to its network-based attack vector, low complexity, and complete compromise of confidentiality, integrity, and availability. While no public exploits or active exploitation have been observed, and community discussion is minimal, the potential impact remains high if a suitable class for exploitation is present within the installed Minecraft modifications.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 3.13.8CPE matchmatch criteria | cpe:2.3:a:techreborn:reborncore:*:*:*:*:*:*:*:* | ||
>= 3.19.0, < 3.19.5CPE matchmatch criteria | cpe:2.3:a:techreborn:reborncore:*:*:*:*:*:*:*:* | ||
>= 4.2.0, < 4.2.10CPE matchmatch criteria | cpe:2.3:a:techreborn:reborncore:*:*:*:*:*:*:*:* | ||
>= 4.7.0, < 4.7.3CPE matchmatch criteria | cpe:2.3:a:techreborn:reborncore:*:*:*:*:*:*:*:* |
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.