Is CVE-2021-37579 actively exploited?

No active exploitation of CVE-2021-37579 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-37579 be exploited remotely?

Yes. CVE-2021-37579 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-37579?

CVE-2021-37579 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2021-37579

CRITICAL

CVE-2021-37579

CWE-502Published: September 9, 2021· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

The Dubbo Provider will check the incoming request and the corresponding serialization type of this request meet the configuration set by the server. But there's an exception that the attacker can use to skip the security check (when enabled) and reaching a deserialization operation with native java serialization. Apache Dubbo 2.7.13, 3.0.2 fixed this issue by quickly fail when any unrecognized request was found.

NVD Source

Technical Analysis

CVE-2021-37579 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), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-502): Insecure deserialization vulnerabilities allow attackers to inject malicious objects during deserialization, potentially enabling remote code execution.