CVE-2023-48887Public exploitNetwork attack vector

Unauthenticated command execution via unchecked Kryo deserialization

Published Dec 1, 2023 · Updated Aug 2, 2024

Deserialization in Jupiter 1.3.1 allows remote attackers to execute arbitrary commands through a crafted Kryo RPC request. The RPC provider's MessageTask.run() passes client-controlled object arguments to KryoSerializer, which invokes Kryo.readObject without class restrictions or security checks. Exploitation requires an object-accepting service method, compatible Commons Collections and BeanUtils gadgets, and remote class loading; success executes commands with the server process's privileges.

CVSS severity9.8
Critical
EPSS probability1.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deserialization in Jupiter 1.3.1 allows remote attackers to execute arbitrary commands through a crafted Kryo RPC request. The RPC provider's MessageTask.run() passes client-controlled object arguments to KryoSerializer, which invokes Kryo.readObject without class restrictions or security checks. Exploitation requires an object-accepting service method, compatible Commons Collections and BeanUtils gadgets, and remote class loading; success executes commands with the server process's privileges.

The record

CVE
CVE-2023-48887
Published
Dec 1, 2023
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-502, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 1, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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

9.8NIST NVDCVSS:3.1/AV:N/AC:L/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 exploitPublished

Weakness, pattern, technique

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

Public exploit references

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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