CVE-2021-40540 is a critical vulnerability affecting the Ulfius HTTP Framework prior to version 2.7.4, where malformed HTTP requests can lead to uninitialized data access due to missing checks in the ulfius_uri_logger function. With a CVSS score of 9.8, this vulnerability allows unauthenticated attackers to achieve full confidentiality, integrity, and availability compromise over the network with low attack complexity. Despite its critical severity, there is currently no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 2.7.4CPE matchmatch criteria | cpe:2.3:a:ulfius_project:ulfius:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/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.