CVE-2021-41054

Name: CVE-2021-41054
Creator: NVD / NIST
Published: 2021-09-13T21:15:09.65+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.40%

Last modified Jun 17, 2026

CVE-2021-41054 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. tftpd_file.c in atftp through 0.7.4 has a buffer overflow because buffer-size handling does not properly consider the combination of data, OACK, and other options.. EPSS estimates a 2.40% chance of exploitation in the next 30 days.

Description

tftpd_file.c in atftp through 0.7.4 has a buffer overflow because buffer-size handling does not properly consider the combination of data, OACK, and other options.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

2.40%

81.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Atftp Project	Atftp	<= 0.7.4
Debian	Debian Linux	9.0

References

https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-41054Exploit, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/11/msg00014.htmlMailing List, Third Party Advisory
https://sourceforge.net/p/atftp/code/ci/d255bf90834fb45be52decf9bc0b4fb46c90f205/Patch, Third Party Advisory
https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-41054Exploit, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/11/msg00014.htmlMailing List, Third Party Advisory
https://sourceforge.net/p/atftp/code/ci/d255bf90834fb45be52decf9bc0b4fb46c90f205/Patch, Third Party Advisory

Timeline

Published: Sep 13, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-41054?

tftpd_file.c in atftp through 0.7.4 has a buffer overflow because buffer-size handling does not properly consider the combination of data, OACK, and other options.

How severe is CVE-2021-41054?

CVE-2021-41054 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.40% probability of exploitation in the next 30 days.

How do I fix CVE-2021-41054?

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-2021-41054?

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

Scan your code now

Source: NVD / NIST