CVE-2018-20354 is a critical use-after-free vulnerability affecting Cesanta Mongoose Embedded Web Server Library versions 6.13 and earlier. This flaw, located in the mg_http_get_proto_data function, allows an unauthenticated attacker to trigger an invalid 8-byte read. With a CVSS score of 9.8, the vulnerability presents a high risk of denial of service or remote code execution, requiring no user interaction. There is currently no public exploit code available (Metasploit, Nuclei, ExploitDB), and it has not been added to CISA's KEV catalog, indicating a lack of active exploitation or widespread community attention.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 6.13CPE matchmatch criteria | cpe:2.3:a:cesanta:mongoose:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/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.