Is CVE-2021-44142 in the CISA KEV catalog?

No. CVE-2021-44142 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-44142?

CVE-2021-44142 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2021-44142?

CVE-2021-44142 has an EPSS score of 73.72% (99th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-44142?

Upgrade samba on debian 11 to 2:4.13.13+dfsg-1~deb11u3 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2021-44142

HIGHEPSS 99th pctl

8.8

CVSS v3

NVD

Description

The Samba vfs_fruit module uses extended file attributes (EA, xattr) to provide "...enhanced compatibility with Apple SMB clients and interoperability with a Netatalk 3 AFP fileserver." Samba versions prior to 4.13.17, 4.14.12 and 4.15.5 with vfs_fruit configured allow out-of-bounds heap read and write via specially crafted extended file attributes. A remote attacker with write access to extended file attributes can execute arbitrary code with the privileges of smbd, typically root.

CWE-125Out-of-bounds Read CWE-787Out-of-bounds Write

How to fix

Remediation Available

sambaDebian

Fixed in:2:4.13.13+dfsg-1~deb11u3CVE-2021-44142

Fixed in:2:4.16.0+dfsg-2CVE-2021-44142

sambaUbuntu

Fixed in:2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12USN-5260-3

Fixed in:2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1USN-5260-3

Fixed in:2:4.7.6+dfsg~ubuntu-0ubuntu2.28USN-5260-2

Fixed in:2:4.13.17~dfsg-0ubuntu0.21.04.1USN-5260-1

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

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 RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

73.72%probability of exploitation in 30 days

99thpercentile

Very high risk: more likely to be exploited than 99% of all known CVEs.

References

Other references6

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-2020-8794	Critical	9.8	89%	-	Fix
CVE-2023-49285	High	8.6	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 2025-04-23.