Is CVE-2021-20190 in the CISA KEV catalog?

No. CVE-2021-20190 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-20190?

CVE-2021-20190 has a CVSS v3 base score of 8.1 (HIGH).

What is the EPSS score for CVE-2021-20190?

CVE-2021-20190 has an EPSS score of 7.48% (94th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-20190?

Upgrade jackson-databind on debian 11 to 2.12.1-1 or later.

CVE & CISA-KEV Catalog

CVE-2021-20190

HIGHEPSS 94th pctl

8.1

CVSS v3

NVD

Description

A flaw was found in jackson-databind before 2.9.10.7. FasterXML mishandles the interaction between serialization gadgets and typing. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

CWE-502Deserialization of Untrusted Data

How to fix

Remediation Available

jackson-databindDebian

Fixed in:2.12.1-1CVE-2021-20190

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 ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

7.48%probability of exploitation in 30 days

94thpercentile

High risk: more likely to be exploited than 94% of all known CVEs.

References

Patch2

Third-Party Advisory3

Other references1

lists.apache.org

Related Vulnerabilities

Other CWE-502 (Deserialization of Untrusted Data) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-0669	High	7.2	100%	KEV + Ransom	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-35464	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2023-29300	Critical	9.8	100%	KEV + Ransom	-
CVE-2025-53770	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2022-47986	Critical	9.8	100%	KEV + Ransom	-

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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 2025-08-27.