Is CVE-2020-21913 in the CISA KEV catalog?

No. CVE-2020-21913 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-21913?

CVE-2020-21913 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2020-21913?

CVE-2020-21913 has an EPSS score of 1.13% (63th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-21913?

Upgrade icu on debian 11 to 67.1-2 or later. Fixes are available for 7 affected products.

CVE & CISA-KEV Catalog

CVE-2020-21913

MEDIUM

5.5

CVSS v3

NVD

Description

International Components for Unicode (ICU-20850) v66.1 was discovered to contain a use after free bug in the pkg_createWithAssemblyCode function in the file tools/pkgdata/pkgdata.cpp.

CWE-416Use After Free

How to fix

Remediation Available

icuDebian

Fixed in:67.1-2CVE-2020-21913

icuUbuntu

Fixed in:52.1-3ubuntu0.8+esm2USN-5133-1

Fixed in:55.1-7ubuntu0.5+esm1USN-5133-1

Fixed in:60.2-3ubuntu3.2USN-5133-1

icu-devtoolsUbuntu

Fixed in:52.1-3ubuntu0.8+esm2USN-5133-1

Fixed in:55.1-7ubuntu0.5+esm1USN-5133-1

Fixed in:60.2-3ubuntu3.2USN-5133-1

libicu52Ubuntu

Fixed in:52.1-3ubuntu0.8+esm2USN-5133-1

libicu55Ubuntu

Fixed in:55.1-7ubuntu0.5+esm1USN-5133-1

libicu60Ubuntu

Fixed in:60.2-3ubuntu3.2USN-5133-1

libiculx60Ubuntu

Fixed in:60.2-3ubuntu3.2USN-5133-1

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 VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

1.13%probability of exploitation in 30 days

63rdpercentile

Moderate risk: more likely to be exploited than 63% of all known CVEs.

References

Patch1

github.com

Exploit1

unicode-org.atlassian.net

Third-Party Advisory2

Related Vulnerabilities

Other CWE-416 (Use After Free) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-0708	Critical	9.8	100%	KEV + Ransom	-
CVE-2021-31166	Critical	9.8	100%	KEV	Fix
CVE-2015-5119	Critical	9.8	99%	KEV	-
CVE-2010-3962	High	8.1	97%	KEV	-
CVE-2015-0313	Critical	9.8	96%	KEV	Fix
CVE-2017-9798	High	7.5	95%	-	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.