CVE-2021-40491

MEDIUM 6.5CVE-2021-40491 · Published 03/09/2021 · updated 17/06/2026

In short

CVE-2021-40491 is a MEDIUM (CVSS 6.5) vulnerability affecting inetutils (gnu).
Chance of exploitation in the next 30 days (EPSS): 0.99%, higher than 62.5% of all vulnerabilities.
Fix: update to 2.2 or later.

Package	Affected versions	Patched versions
inetutils gnu	`< 2.2`	`2.2`

Description

The ftp client in GNU Inetutils before 2.2 does not validate addresses returned by PASV/LSPV responses to make sure they match the server address. This is similar to CVE-2020-8284 for curl.

References

bugs.debian.org/cgi-bin/bugreport.cgi · Third Party Advisory
git.savannah.gnu.org/cgit/inetutils.git/commit · Patch
lists.debian.org/debian-lts-announce/2022/11/msg00033.html · Mailing List
lists.gnu.org/archive/html/bug-inetutils/2021-06/msg00002.html · Mailing List

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Package

Affected versions

Patched versions

inetutils

gnu

< 2.2

2.2

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