Is CVE-2021-3541 in the CISA KEV catalog?

No. CVE-2021-3541 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-3541?

CVE-2021-3541 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2021-3541?

CVE-2021-3541 has an EPSS score of 1.86% (77th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-3541?

Upgrade libxml2 on debian 11 to 2.9.10+dfsg-6.7 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2021-3541

MEDIUMEPSS 77th pctl

6.5

CVSS v3

NVD

Description

A flaw was found in libxml2. Exponential entity expansion attack its possible bypassing all existing protection mechanisms and leading to denial of service.

CWE-776

How to fix

Remediation Available

libxml2Debian

Fixed in:2.9.10+dfsg-6.7CVE-2021-3541

libxml2Ubuntu

Fixed in:2.9.1+dfsg1-3ubuntu4.13+esm2USN-4991-1

Fixed in:2.9.3+dfsg1-1ubuntu0.7+esm1USN-4991-1

Fixed in:2.9.4+dfsg1-6.1ubuntu1.4USN-4991-1

Fixed in:2.9.10+dfsg-5ubuntu0.20.04.1USN-4991-1

libxml2-utilsUbuntu

Fixed in:2.9.1+dfsg1-3ubuntu4.13+esm2USN-4991-1

Fixed in:2.9.3+dfsg1-1ubuntu0.7+esm1USN-4991-1

Fixed in:2.9.4+dfsg1-6.1ubuntu1.4USN-4991-1

Fixed in:2.9.10+dfsg-5ubuntu0.20.04.1USN-4991-1

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 RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

1.86%probability of exploitation in 30 days

77thpercentile

Elevated risk: more likely to be exploited than 77% of all known CVEs.

References

Patch2

Third-Party Advisory1

security.netapp.com

Embed a live status badge for CVE-2021-3541

Markdown

[![CVE-2021-3541](https://tridentstack.com/cve/badge/CVE-2021-3541.svg)](https://tridentstack.com/cve/CVE-2021-3541)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-3541"><img src="https://tridentstack.com/cve/badge/CVE-2021-3541.svg" alt="CVE-2021-3541"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

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.