CVE-2021-29200Network attack vector

Unauthenticated RCE via incomplete RMI deserialization denylist

Published Apr 27, 2021 · Updated Aug 3, 2024

Unsafe deserialization in Apache OFBiz before 17.12.07 allows remote attackers to execute arbitrary code through crafted RMI objects. SafeObjectInputStream.resolveClass rejects only names containing java.rmi.server, so UtilObject.getObject can pass other java.rmi classes to ObjectInputStream.readObject. No authentication is required; successful exploitation runs code with the OFBiz server process's privileges and can compromise its data and availability.

CVSS severity9.8
Critical
EPSS probability55.37%
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 Apache OFBiz before 17.12.07 allows remote attackers to execute arbitrary code through crafted RMI objects. SafeObjectInputStream.resolveClass rejects only names containing java.rmi.server, so UtilObject.getObject can pass other java.rmi classes to ObjectInputStream.readObject. No authentication is required; successful exploitation runs code with the OFBiz server process's privileges and can compromise its data and availability.

The record

CVE
CVE-2021-29200
Published
Apr 27, 2021
Updated
Aug 3, 2024
Vendor
The Apache Software Foundation
Product
Apache OFBiz
Classifications
CWE-502, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 27, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Apache OFBiz <17.12.07

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache OFBizversion=Apache OFBiz <17.12.07

Published CVSS scores

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NVDAV:N/AC:L/Au:N/C:P/I:P/A:P

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.

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Technologies

Your stack

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Your stack

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