Skip to content
Fencer Intel
high 7.5

CVE-2021-41054 json

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,…

published 5y ago modified 4mo ago also EUVD-2021-28205

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.3%
EPSS 2.3% chance of exploitation in 30 days, percentile 83%
public exploits
0
none known

Summary

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.

Patch / fix

  • atftp Debian 14, Debian 13, Debian 12 0.7.git20210915-1

debian advisories DEBIAN-CVE-2021-41054

  • atftp Ubuntu 20.04 LTS 0.7.git20120829-3.1ubuntu0.1
  • atftp Ubuntu Pro 16.04 LTS 0.7.git20120829-3.1~0.16.04.1+esm1
  • atftp Ubuntu Pro 18.04 LTS 0.7.git20120829-3.1~0.18.04.1+esm1

ubuntu advisories UBUNTU-CVE-2021-41054

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • atftp SLES for SAP 12 SP5, SLES 12 SP5 0.7.0-160.11.1

suse advisories SUSE-SU-2021:3237-1

  • atftp openSUSE Tumbleweed 0.7.5-1.1

opensuse advisories openSUSE-SU-2024:10636-1

  • atftp Arch Linux 0.7.5-1

arch linux advisories AVG-2381

Is CVE-2021-41054 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Exploit prediction

2.34% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-41054 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-120 Buffer Copy without Checking Size of Input

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.