Is CVE-2021-1405 in the CISA KEV catalog?

No. CVE-2021-1405 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-1405?

CVE-2021-1405 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2021-1405?

CVE-2021-1405 has an EPSS score of 3.16% (87th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-1405?

Upgrade clamav on debian 11 to 0.103.2+dfsg-1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2021-1405

HIGHEPSS 87th pctl

7.5

CVSS v3

NVD

Description

A vulnerability in the email parsing module in Clam AntiVirus (ClamAV) Software version 0.103.1 and all prior versions could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to improper variable initialization that may result in an NULL pointer read. An attacker could exploit this vulnerability by sending a crafted email to an affected device. An exploit could allow the attacker to cause the ClamAV scanning process crash, resulting in a denial of service condition.

CWE-120Classic Buffer Overflow CWE-909

How to fix

Remediation Available

clamavDebian

Fixed in:0.103.2+dfsg-1CVE-2021-1405

clamavUbuntu

Fixed in:0.103.2+dfsg-0ubuntu0.14.04.1+esm1USN-4918-2

Fixed in:0.103.2+dfsg-0ubuntu0.16.04.1USN-4918-1

Fixed in:0.103.2+dfsg-0ubuntu0.18.04.1USN-4918-1

Fixed in:0.103.2+dfsg-0ubuntu0.20.04.1USN-4918-1

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 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

3.16%probability of exploitation in 30 days

87thpercentile

Elevated risk: more likely to be exploited than 87% of all known CVEs.

References

Vendor Advisory1

blog.clamav.net

Third-Party Advisory2

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	92%	-	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.