CVE-2024-0840 is a high-severity parameter injection vulnerability affecting Grandstream UCM Series IP PBX devices (UCM6202, UCM6204, UCM6208, UCM6510) running firmware older than 1.0.20.52. An authenticated remote attacker can exploit this flaw by sending a crafted HTTP request to achieve arbitrary code execution. The vulnerability has a CVSSv3.1 score of 8.8, indicating high impact on confidentiality, integrity, and availability, with low attack complexity. While authentication is required, default credentials may facilitate access. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
| Grandstream | UCM Series | >= 0, < <1.0.20.52CNA affecteddefault unaffected |
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.
Remediation records are not available for this CVE.