CVE-2021-21956 is a critical php unserialize vulnerability within the Ai-Bolit functionality of CloudLinux Imunify360 5.10.2, allowing for potential arbitrary command execution. With a CVSS score of 7.8 (HIGH), this vulnerability can be triggered by an unauthenticated attacker providing a specially crafted malicious file, leading to high impact on confidentiality, integrity, and availability. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion and media coverage, indicating awareness and potential for future exploitation.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
5.8CPE matchmatch criteria | cpe:2.3:a:cloudlinux:imunify360:5.8:*:*:*:*:*:*:* | ||
5.9CPE matchmatch criteria | cpe:2.3:a:cloudlinux:imunify360:5.9:*:*:*:*:*:*:* | ||
5.10.2CPE matchmatch criteria | cpe:2.3:a:cloudlinux:imunify360:5.10.2:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.
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.