CVE-2021-20190

Jackson Databind vulnerability

CVSS

8.1

EPSS

7.5%

EPSS pct

94th

Exploited

No known

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.

Affected vendor

Fasterxml

Affected product

Jackson Databind

CVSS vector

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

Weakness type (CWE)

CWE-502 — Deserialization of Untrusted Data

Published

2021-01-19

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, high attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 7.5% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 94% of all scored CVEs.

Check your external exposure to CVE-2021-20190

Confirm whether Fasterxml Jackson Databind is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2021-20190.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-20190

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-20190 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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