CVE-2021-40494

Name: CVE-2021-40494
Creator: NVD / NIST
Published: 2021-09-03T02:15:06.467+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.58%

Last modified Jun 17, 2026

CVE-2021-40494 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A Hardcoded JWT Secret Key in metadata.py in AdaptiveScale LXDUI through 2.1.3 allows attackers to gain admin access to the host system.. EPSS estimates a 1.58% chance of exploitation in the next 30 days.

Description

A Hardcoded JWT Secret Key in metadata.py in AdaptiveScale LXDUI through 2.1.3 allows attackers to gain admin access to the host system.

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

1.58%

72.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-798

Affected Software

Vendor	Product	Versions
Adaptivescale	Lxdui	<= 2.1.3

References

https://github.com/AdaptiveScale/lxdui/pull/353Third Party Advisory
https://github.com/AdaptiveScale/lxdui/pull/353Third Party Advisory

Timeline

Published: Sep 3, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-40494?

A Hardcoded JWT Secret Key in metadata.py in AdaptiveScale LXDUI through 2.1.3 allows attackers to gain admin access to the host system.

How severe is CVE-2021-40494?

CVE-2021-40494 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.58% probability of exploitation in the next 30 days.

How do I fix CVE-2021-40494?

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-2021-40494?

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

Scan your code now

Source: NVD / NIST