CVE-2021-21495

Name: CVE-2021-21495
Creator: NVD / NIST
Published: 2021-01-04T03:15:13.48+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.53%

Last modified Jun 17, 2026

CVE-2021-21495 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. MK-AUTH through 19.01 K4.9 allows CSRF for password changes via the central/executar_central.php?acao=altsenha_princ URI.. EPSS estimates a 0.53% chance of exploitation in the next 30 days.

Description

MK-AUTH through 19.01 K4.9 allows CSRF for password changes via the central/executar_central.php?acao=altsenha_princ URI.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

0.53%

40.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-352

Affected Software

Vendor	Product	Versions
Mk-Auth	Mk-Auth	<= 19.01

References

http://mk-auth.com.br/Product, Vendor Advisory
https://gist.github.com/alacerda/98853283be6009e75b7d94968d50b88eExploit, Third Party Advisory
http://mk-auth.com.br/Product, Vendor Advisory
https://gist.github.com/alacerda/98853283be6009e75b7d94968d50b88eExploit, Third Party Advisory

Timeline

Published: Jan 4, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-21495?

MK-AUTH through 19.01 K4.9 allows CSRF for password changes via the central/executar_central.php?acao=altsenha_princ URI.

How severe is CVE-2021-21495?

CVE-2021-21495 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.53% probability of exploitation in the next 30 days.

How do I fix CVE-2021-21495?

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-2021-21495?

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

Scan your code now

Source: NVD / NIST