Is CVE-2021-41054 in the CISA KEV catalog?

No. CVE-2021-41054 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-41054?

CVE-2021-41054 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2021-41054?

CVE-2021-41054 has an EPSS score of 2.40% (82th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-41054?

Upgrade atftp on debian 11 to 0.7.git20120829-3.3+deb11u1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2021-41054

HIGHEPSS 82th pctl

7.5

CVSS v3

NVD

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.

CWE-120Classic Buffer Overflow

How to fix

Remediation Available

atftpDebian

Fixed in:0.7.git20120829-3.3+deb11u1CVE-2021-41054

Fixed in:0.7.git20210915-1CVE-2021-41054

atftpUbuntu

Fixed in:0.7.git20120829-3.1~0.16.04.1+esm1USN-6334-1

Fixed in:0.7.git20120829-3.1~0.18.04.1+esm1USN-6334-1

Fixed in:0.7.git20120829-3.1ubuntu0.1USN-6334-1

atftpdUbuntu

Fixed in:0.7.git20120829-3.1~0.16.04.1+esm1USN-6334-1

Fixed in:0.7.git20120829-3.1~0.18.04.1+esm1USN-6334-1

Fixed in:0.7.git20120829-3.1ubuntu0.1USN-6334-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

2.40%probability of exploitation in 30 days

82ndpercentile

Elevated risk: more likely to be exploited than 82% of all known CVEs.

References

Patch1

sourceforge.net

Exploit1

github.com

Third-Party Advisory1

lists.debian.org

Related Vulnerabilities

Other CWE-120 (Classic Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0195	Medium	6.8	100%	-	Fix
CVE-2017-7269	Critical	9.8	100%	KEV	-
CVE-2019-11043	High	8.7	99%	KEV + Ransom	Fix
CVE-2011-4862	High	10.0	95%	-	Fix
CVE-2007-5659	High	7.8	94%	KEV	Fix
CVE-2022-3786	High	7.5	91%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.