Is CVE-2021-43297 actively exploited?

No active exploitation of CVE-2021-43297 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-43297 be exploited remotely?

Yes. CVE-2021-43297 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-43297?

CVE-2021-43297 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2021-43297

CRITICAL

CVE-2021-43297

CWE-502Published: January 10, 2022· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

A deserialization vulnerability existed in dubbo hessian-lite 3.2.11 and its earlier versions, which could lead to malicious code execution. Most Dubbo users use Hessian2 as the default serialization/deserialization protocol, during Hessian catch unexpected exceptions, Hessian will log out some imformation for users, which may cause remote command execution. This issue affects Apache Dubbo Apache Dubbo 2.6.x versions prior to 2.6.12; Apache Dubbo 2.7.x versions prior to 2.7.15; Apache Dubbo 3.0.x versions prior to 3.0.5.

NVD Source

Technical Analysis

CVE-2021-43297 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.