Is CVE-2021-44556 in the CISA KEV catalog?

No. CVE-2021-44556 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-44556?

CVE-2021-44556 has a CVSS v3 base score of 9.1 (CRITICAL).

What is the EPSS score for CVE-2021-44556?

CVE-2021-44556 has an EPSS score of 1.26% (66th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-44556?

Upgrade digger to 08-25-2021 or later.

CVE & CISA-KEV Catalog

CVE-2021-44556

CRITICAL

9.1

CVSS v3

NVD

Description

National Library of the Netherlands digger < 6697d1269d981e35e11f240725b16401b5ce3db5 is affected by a XML External Entity (XXE) vulnerability. Since XML parsing resolves external entities, a malicious XML stream could leak internal files and/or cause a DoS.

CWE-611XML External Entity (XXE)

How to fix

Remediation Available

diggerNVD

Affected:< 08-25-2021Fixed in:08-25-2021CVE-2021-44556derived from NVD

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

ConfidentialityHigh

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

1.26%probability of exploitation in 30 days

66thpercentile

Moderate risk: more likely to be exploited than 66% of all known CVEs.

References

Patch1

github.com

Third-Party Advisory1

github.com

Related Vulnerabilities

Other CWE-611 (XML External Entity (XXE)) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-34102	Critical	9.8	100%	KEV	Fix
CVE-2019-9670	Critical	9.8	100%	KEV	Fix
CVE-2022-28219	Critical	9.8	97%	-	-
CVE-2024-22024	High	8.3	95%	-	-
CVE-2024-38653	High	7.5	92%	-	-
CVE-2017-12629	Critical	9.8	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.