Is CVE-2022-36437 actively exploited?

No active exploitation of CVE-2022-36437 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2022-36437 be exploited remotely?

Yes. CVE-2022-36437 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2022-36437?

CVE-2022-36437 has a CVSS score of 9.1 (CRITICAL).

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CRITICAL

CVE-2022-36437

CWE-384Published: December 29, 2022· Updated: Jun 17, 2026

9.1

CVSS v3.1

Official Description

The Connection handler in Hazelcast and Hazelcast Jet allows a remote unauthenticated attacker to access and manipulate data in the cluster with the identity of another already authenticated connection. The affected Hazelcast versions are through 4.0.6, 4.1.9, 4.2.5, 5.0.3, and 5.1.2. The affected Hazelcast Jet versions are through 4.5.3.

NVD Source

Risk Analysis

Hazelcast and Hazelcast Jet contain a connection handling flaw that allows unauthenticated remote attackers to hijack existing sessions and manipulate cluster data. With a 9.1 CVSS score, this is a critical issue for cluster security.

No public exploit is known, and it is not in the CISA KEV. The vulnerability is remotely exploitable.

Recommended Action

Upgrade to a patched version of Hazelcast or Hazelcast Jet as recommended by the vendor.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2022-36437 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 9.1.