CVE-2021-46520 describes a heap buffer overflow vulnerability in Cesanta MJS version 2.20.0, specifically within the mjs_jprintf function in src/mjs_util.c. This vulnerability carries a CVSS score of 7.8 (High), indicating a significant risk where an attacker could achieve high impact on confidentiality, integrity, and availability through a local attack requiring user interaction. While the vulnerability is severe, there is currently no evidence of active exploitation, no publicly available exploit code in Metasploit or ExploitDB, and minimal community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
2.20.0CPE matchmatch criteria | cpe:2.3:a:cesanta:mjs:2.20.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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.
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.