CVE-2021-3169

Name: CVE-2021-3169
Creator: NVD / NIST
Published: 2021-07-23T21:15:07.437+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.75%

Last modified Jun 17, 2026

CVE-2021-3169 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. An issue in Jumpserver before 2.6.2, before 2.5.4, before 2.4.5 allows attackers to create a connection token through an API which does not have access control and use it to access sensitive assets.. EPSS estimates a 2.75% chance of exploitation in the next 30 days.

Description

An issue in Jumpserver before 2.6.2, before 2.5.4, before 2.4.5 allows attackers to create a connection token through an API which does not have access control and use it to access sensitive assets.

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

2.75%

84.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-74

Affected Software

Vendor	Product	Versions
Jumpserver	Jumpserver	>= 2.4.0, < 2.4.5
Jumpserver	Jumpserver	>= 2.5.0, < 2.5.4
Jumpserver	Jumpserver	>= 2.6.0, < 2.6.2

References

https://blog.fit2cloud.com/?p=1764Third Party Advisory
https://mp.weixin.qq.com/s/5tgcaIrnDnGP-LvWPw9YCgThird Party Advisory
https://s.tencent.com/research/bsafe/1228.htmlThird Party Advisory
https://blog.fit2cloud.com/?p=1764Third Party Advisory
https://mp.weixin.qq.com/s/5tgcaIrnDnGP-LvWPw9YCgThird Party Advisory
https://s.tencent.com/research/bsafe/1228.htmlThird Party Advisory

Timeline

Published: Jul 23, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-3169?

An issue in Jumpserver before 2.6.2, before 2.5.4, before 2.4.5 allows attackers to create a connection token through an API which does not have access control and use it to access sensitive assets.

How severe is CVE-2021-3169?

CVE-2021-3169 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.75% probability of exploitation in the next 30 days.

How do I fix CVE-2021-3169?

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-2021-3169?

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

Scan your code now

Source: NVD / NIST