CVE-2021-46671

Name: CVE-2021-46671
Creator: NVD / NIST
Published: 2022-02-04T21:15:08.057+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 1.33%

Last modified Jun 17, 2026

CVE-2021-46671 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. options.c in atftp before 0.7.5 reads past the end of an array, and consequently discloses server-side /etc/group data to a remote client.. EPSS estimates a 1.33% chance of exploitation in the next 30 days.

Description

options.c in atftp before 0.7.5 reads past the end of an array, and consequently discloses server-side /etc/group data to a remote client.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS Probability

1.33%

67.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-125

Affected Software

Vendor	Product	Versions
Atftp Project	Atftp	< 0.7.5
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0
Debian	Debian Linux	11.0

References

https://bugs.debian.org/1004974Exploit, Issue Tracking, Mailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/05/msg00040.htmlMailing List, Third Party Advisory
https://sourceforge.net/p/atftp/code/ci/9cf799c40738722001552618518279e9f0ef62e5Patch, Third Party Advisory
https://bugs.debian.org/1004974Exploit, Issue Tracking, Mailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/05/msg00040.htmlMailing List, Third Party Advisory
https://sourceforge.net/p/atftp/code/ci/9cf799c40738722001552618518279e9f0ef62e5Patch, Third Party Advisory

Timeline

Published: Feb 4, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-46671?

options.c in atftp before 0.7.5 reads past the end of an array, and consequently discloses server-side /etc/group data to a remote client.

How severe is CVE-2021-46671?

CVE-2021-46671 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 1.33% probability of exploitation in the next 30 days.

How do I fix CVE-2021-46671?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-46671?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST