CVE-2021-34371

PoC —

CVSS 3.1

9.8 critical

EPSS

13%p96

Published

Aug 5, 2021 (Aug 5, 2021)

Modified

Jun 17, 2026

Description

Neo4j through 3.4.18 (with the shell server enabled) exposes an RMI service that arbitrarily deserializes Java objects, e.g., through setSessionVariable. An attacker can abuse this for remote code execution because there are dependencies with exploitable gadget chains.

Vendors: neo4j
Products: neo4j
Weakness: CWE-502
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (13.4%)

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