Is CVE-2021-46671 in the CISA KEV catalog?

No. CVE-2021-46671 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-46671?

CVE-2021-46671 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2021-46671?

CVE-2021-46671 has an EPSS score of 1.36% (68th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-46671?

Upgrade atftp on debian 11 to 0.7.git20120829-3.3+deb11u2 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2021-46671

MEDIUM

5.3

CVSS v3

NVD

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.

CWE-125Out-of-bounds Read

How to fix

Remediation Available

atftpDebian

Fixed in:0.7.git20120829-3.3+deb11u2CVE-2021-46671

Fixed in:0.7.git20210915-1CVE-2021-46671

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

ConfidentialityLow

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

1.36%probability of exploitation in 30 days

68thpercentile

Moderate risk: more likely to be exploited than 68% of all known CVEs.

References

Patch1

sourceforge.net

Exploit1

bugs.debian.org

Third-Party Advisory1

lists.debian.org

Related Vulnerabilities

Other CWE-125 (Out-of-bounds Read) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0160	High	7.5	100%	KEV	Fix
CVE-2025-5777	High	7.5	100%	KEV + Ransom	Fix
CVE-2021-4034	High	7.8	95%	KEV	Fix
CVE-2023-21769	High	7.5	92%	-	Fix
CVE-2023-49285	High	8.6	89%	-	Fix
CVE-2020-8794	Critical	9.8	89%	-	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.