CVE-2021-34371
9.8
CRITICAL · CVSS 3.1 · EPSS 13.4% (pctl 96)
Patch early
EPSS 13.4% — above the 10% action threshold.
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.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 13.39% — more likely to be exploited than 96% of all CVEs |
| Weakness | CWE-502 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2021-08-05 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| neo4j | neo4j |
→ the Explorer · watch your stack · NVD