CVE-2021-36161

Name: CVE-2021-36161
Creator: NVD / NIST
Published: 2021-09-09T08:15:28.667+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.39%

Last modified Jun 17, 2026

CVE-2021-36161 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Some component in Dubbo will try to print the formated string of the input arguments, which will possibly cause RCE for a maliciously customized bean with special toString method. In the latest version, we fix the toString call in timeout, cache and some other places. EPSS estimates a 2.39% chance of exploitation in the next 30 days.

Description

Some component in Dubbo will try to print the formated string of the input arguments, which will possibly cause RCE for a maliciously customized bean with special toString method. In the latest version, we fix the toString call in timeout, cache and some other places. Fixed in Apache Dubbo 2.7.13

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

2.39%

81.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-134

Affected Software

Vendor	Product	Versions
Apache	Dubbo	>= 2.7.0, < 2.7.13

References

https://lists.apache.org/thread.html/r40212261fd5d638074b65f22ac73eebe93ace310c79d4cfcca4863da%40%3Cdev.dubbo.apache.org%3EMailing List, Vendor Advisory
https://lists.apache.org/thread.html/r40212261fd5d638074b65f22ac73eebe93ace310c79d4cfcca4863da%40%3Cdev.dubbo.apache.org%3EMailing List, Vendor Advisory

Timeline

Published: Sep 9, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-36161?

How severe is CVE-2021-36161?

CVE-2021-36161 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.39% probability of exploitation in the next 30 days.

How do I fix CVE-2021-36161?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-36161?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST