CVE-2020-14195Network attack vector

Remote code execution via unblocked JNDI gadget

Published Jun 16, 2020 · Updated Aug 4, 2024

Unsafe deserialization in FasterXML Jackson Databind 2.9.0 through 2.9.10.4 allows remote attackers to execute arbitrary code. SubTypeValidator does not reject org.jsecurity.realm.jndi.JndiRealmFactory as a polymorphic type, causing crafted input to instantiate the JNDI gadget. Reachability requires an application to deserialize attacker-controlled polymorphic data while the org.jsecurity library is present.

CVSS severity8.1
High
EPSS probability4.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unsafe deserialization in FasterXML Jackson Databind 2.9.0 through 2.9.10.4 allows remote attackers to execute arbitrary code. SubTypeValidator does not reject org.jsecurity.realm.jndi.JndiRealmFactory as a polymorphic type, causing crafted input to instantiate the JNDI gadget. Reachability requires an application to deserialize attacker-controlled polymorphic data while the org.jsecurity library is present.

The record

CVE
CVE-2020-14195
Published
Jun 16, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-502, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 16, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.1GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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