CVE-2023-36480: The Aerospike Java client is a Java application that implements a network protocol to communicate with an Aero

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CRITICAL 9.8REMOTEUPGRADE

CVE-2023-36480 is a critical-severity flaw (CVSS 9.8) affecting aerospike java client. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Aerospike Java client is a Java application that implements a network protocol to communicate with an Aerospike server. Prior to versions 7.0.0, 6.2.0, 5.2.0, and 4.5.0 some of the messages received from the server contain Java objects that the client deserializes when it encounters them without further validation. Attackers that manage to trick clients into communicating with a malicious server can include especially crafted objects in its r

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.8% (top 22%)
CISA exploited list	No
Weakness	CWE-502
Published	2023-08-04
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: aerospike

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-08-04 15:15 UTCPublished CVE record published
2026-06-17 06:06 UTCUpdated Record last modified

aerospike aerospike java client UPGRADE

Affected: < 4.5.0 · >= 5.0.0 and < 5.2.0 · >= 6.0.0 and < 6.2.0

Fixed in: 4.5.0, 5.2.0, 6.2.0

Safe to downgrade to: a release before 5.0.0

1. Check installed version

apt-cache policy aerospike-java-client || rpm -q aerospike-java-client || aerospike-java-client --version

2. UPGRADE to 4.5.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade aerospike-java-client

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade aerospike-java-client

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 5.0.0 (Debian / Ubuntu)

apt-cache madison aerospike-java-client sudo apt install aerospike-java-client=<VERSION_BEFORE_5.0.0> sudo apt-mark hold aerospike-java-client

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list aerospike-java-client sudo dnf downgrade aerospike-java-client-<VERSION_BEFORE_5.0.0> sudo dnf versionlock add aerospike-java-client

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-36480?

aerospike java client: upgrade to 4.5.0, 5.2.0, 6.2.0. Exact commands for each OS are on this page.

Is CVE-2023-36480 being exploited?

CVE-2023-36480 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-36480 affect?

CVE-2023-36480 affects aerospike java client. Severity is critical (CVSS 9.8). The Aerospike Java client is a Java application that implements a network protocol to communicate with an Aerospike server. Prior to versions 7.0.0, 6.2.0, 5.2.0, and 4.5.0 some of the messages received from the server contain Java objects

How urgent is CVE-2023-36480?

Priority 59/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

Java vulnerabilities

References

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