CVE-2018-20355 is a critical use-after-free vulnerability in Cesanta Mongoose Embedded Web Server Library versions 6.13 and earlier, specifically within the mg_http_free_proto_data_cgi function. This flaw allows an unauthenticated attacker to trigger an invalid write, leading to a denial of service or potentially remote code execution. With a CVSS score of 9.8, it is easily exploitable over the network with no user interaction. While highly severe, there is currently no public exploit code, Metasploit modules, or evidence of active exploitation, and it has received minimal community discussion or media coverage.
| 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.