CVE-2022-36437

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.

Published: 2022-12-29 Last update: 2025-04-11 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-36437 is rated Moderate Risk (56.7/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 0.36%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2022-36437

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-02-01 0.29% 0.36% +0.08%
2 2025-12-31 0.38% 0.29% -0.09%
3 2025-11-21 — 0.38% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-36437

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.1 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 5.2 [email protected]
9.1 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 5.2 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2022-36437

GitHub Security Advisory for CVE-2022-36437

GHSA-c5hg-mr8r-f6jp · Severity: critical · Ecosystem: maven — Hazelcast connection caching

OS Trackers for CVE-2022-36437

vendor priority summary link
redhat critical — https://access.redhat.com/security/cve/CVE-2022-36437

Affected software / configurations for CVE-2022-36437

Vendor Product Version Raw CPE
hazelcast hazelcast < 3.12.13 cpe:2.3:a:hazelcast:hazelcast:*:*:*:*:-:*:*:*
hazelcast hazelcast < 3.12.13 cpe:2.3:a:hazelcast:hazelcast:*:*:*:*:enterprise:*:*:*
hazelcast hazelcast >= 4.0.0, < 4.1.10 cpe:2.3:a:hazelcast:hazelcast:*:*:*:*:-:*:*:*
hazelcast hazelcast >= 4.0.0, < 4.1.10 cpe:2.3:a:hazelcast:hazelcast:*:*:*:*:enterprise:*:*:*
hazelcast hazelcast >= 4.2.0, < 4.2.6 cpe:2.3:a:hazelcast:hazelcast:*:*:*:*:-:*:*:*
hazelcast hazelcast >= 4.2.0, < 4.2.6 cpe:2.3:a:hazelcast:hazelcast:*:*:*:*:enterprise:*:*:*
hazelcast hazelcast >= 5.0.0, < 5.0.4 cpe:2.3:a:hazelcast:hazelcast:*:*:*:*:-:*:*:*
hazelcast hazelcast >= 5.0.0, < 5.0.4 cpe:2.3:a:hazelcast:hazelcast:*:*:*:*:enterprise:*:*:*
hazelcast hazelcast >= 5.1.0, < 5.1.3 cpe:2.3:a:hazelcast:hazelcast:*:*:*:*:-:*:*:*
hazelcast hazelcast >= 5.1.0, < 5.1.3 cpe:2.3:a:hazelcast:hazelcast:*:*:*:*:enterprise:*:*:*
hazelcast hazelcast-jet < 4.5.4 cpe:2.3:a:hazelcast:hazelcast-jet:*:*:*:*:-:*:*:*
hazelcast hazelcast-jet < 4.5.4 cpe:2.3:a:hazelcast:hazelcast-jet:*:*:*:*:enterprise:*:*:*

References for CVE-2022-36437

cvelogic Threat Intelligence