CVE-2023-36480Public exploitNetwork attack vector

Remote code execution via unsafe JBLOB deserialization

Published Aug 4, 2023 · Updated Oct 17, 2024

Unsafe deserialization in Aerospike Java Client 6.1.7 allows remote attackers controlling a server to execute arbitrary code. Buffer.bytesToObject and Unpacker.unpackBlob pass server-supplied JBLOB bytes to ObjectInputStream.readObject without validation. Exploitation requires the client to connect to an attacker-controlled Aerospike server and a usable deserialization gadget in the application's classpath, permitting takeover of the client host.

CVSS severity9.8
Critical
EPSS probability1.78%
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 Aerospike Java Client 6.1.7 allows remote attackers controlling a server to execute arbitrary code. Buffer.bytesToObject and Unpacker.unpackBlob pass server-supplied JBLOB bytes to ObjectInputStream.readObject without validation. Exploitation requires the client to connect to an attacker-controlled Aerospike server and a usable deserialization gadget in the application's classpath, permitting takeover of the client host.

The record

CVE
CVE-2023-36480
Published
Aug 4, 2023
Updated
Oct 17, 2024
Vendor
Aerospike
Product
Aerospike Java Client Library
Classifications
CWE-502, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 4, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 17, 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=< 4.5.0
  2. Affected versionversion=>= 5.0.0, < 5.2.0
  3. Affected versionversion=>= 6.0.0, < 6.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Aerospike · Aerospike Java Client Libraryversion=< 4.5.0; version=>= 5.0.0, < 5.2.0; version=>= 6.0.0, < 6.2.0

Published CVSS scores

9.8GitHub, Inc.CVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
T1203Exploitation for Client Execution

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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