CVE-2023-5521

Name: CVE-2023-5521
Creator: NVD / NIST
Published: 2023-10-11T12:15:11.937+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.58%

Last modified Jun 17, 2026

CVE-2023-5521 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Incorrect Authorization in GitHub repository tiann/kernelsu prior to v0.6.9.. EPSS estimates a 0.58% chance of exploitation in the next 30 days.

Description

Incorrect Authorization in GitHub repository tiann/kernelsu prior to v0.6.9.

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

0.58%

43.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-863

Affected Software

Vendor	Product	Versions
Kernelsu	Kernelsu	< 0.6.9

References

https://github.com/tiann/kernelsu/commit/a22959beae1aad96b1f72710a5daadf529c41bdaPatch
https://huntr.dev/bounties/d438eff7-4e24-45e0-bc75-d3a5b3ab2ea1Exploit, Patch, Third Party Advisory
https://github.com/tiann/kernelsu/commit/a22959beae1aad96b1f72710a5daadf529c41bdaPatch
https://huntr.dev/bounties/d438eff7-4e24-45e0-bc75-d3a5b3ab2ea1Exploit, Patch, Third Party Advisory

Timeline

Published: Oct 11, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-5521?

Incorrect Authorization in GitHub repository tiann/kernelsu prior to v0.6.9.

How severe is CVE-2023-5521?

CVE-2023-5521 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.58% probability of exploitation in the next 30 days.

How do I fix CVE-2023-5521?

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-2023-5521?

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

Scan your code now

Source: NVD / NIST