CVE-2020-25566

Name: CVE-2020-25566
Creator: NVD / NIST
Published: 2021-08-11T21:15:08.213+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.56%

Last modified Jun 17, 2026

CVE-2020-25566 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. In SapphireIMS 5.0, it is possible to take over an account by sending a request to the Save_Password form as shown in POC. Notice that we do not require a JSESSIONID in this request and can reset any user’s password by changing the username to that user and password to base64(desired password).. EPSS estimates a 1.56% chance of exploitation in the next 30 days.

Description

In SapphireIMS 5.0, it is possible to take over an account by sending a request to the Save_Password form as shown in POC. Notice that we do not require a JSESSIONID in this request and can reset any user’s password by changing the username to that user and password to base64(desired password).

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

1.56%

72.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-306

Affected Software

Vendor	Product	Versions
Sapphireims	Sapphireims	5.0

References

https://vuln.shellcoder.party/2020/09/19/cve-2020-25566-sapphireims-unauthenticated-account-takeover/Exploit, Third Party Advisory
https://vuln.shellcoder.party/tags/sapphireims/Exploit, Third Party Advisory
https://vuln.shellcoder.party/2020/09/19/cve-2020-25566-sapphireims-unauthenticated-account-takeover/Exploit, Third Party Advisory
https://vuln.shellcoder.party/tags/sapphireims/Exploit, Third Party Advisory

Timeline

Published: Aug 11, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-25566?

How severe is CVE-2020-25566?

CVE-2020-25566 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.56% probability of exploitation in the next 30 days.

How do I fix CVE-2020-25566?

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-2020-25566?

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

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Source: NVD / NIST