CVE-2021-40491 is a medium-severity vulnerability affecting the ftp client in GNU Inetutils before version 2.2, including various Debian distributions. The flaw stems from the client's failure to validate addresses returned in PASV/LSPV responses against the server's actual address, similar to CVE-2020-8284. This user-interaction required vulnerability (CVSS 6.5) could lead to high confidentiality impact if an attacker redirects the client to a malicious server. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 2.2CPE matchmatch criteria | cpe:2.3:a:gnu:inetutils:*:*:*:*:*:*:*:* | ||
10.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
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.