CVE-2021-28271

Name: CVE-2021-28271
Creator: NVD / NIST
Published: 2021-04-27T13:15:08.373+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.87%

Last modified Jun 17, 2026

CVE-2021-28271 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Soyal Technologies SOYAL 701Server 9.0.1 suffers from an elevation of privileges vulnerability which can be used by an authenticated user to change the executable file with a binary choice. The vulnerability is due to improper permissions with the 'F' flag (Full) for 'Everyone'and 'Authenticated Users' group.. EPSS estimates a 1.87% chance of exploitation in the next 30 days.

Description

Soyal Technologies SOYAL 701Server 9.0.1 suffers from an elevation of privileges vulnerability which can be used by an authenticated user to change the executable file with a binary choice. The vulnerability is due to improper permissions with the 'F' flag (Full) for 'Everyone'and 'Authenticated Users' group.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

1.87%

76.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-276

Affected Software

Vendor	Product	Versions
Soyal	701clientsql	>= 10.0, < 10.2
Soyal	701server	<= 9.0.2
Soyal	701serversql	>= 10.0, < 10.2

References

https://www.exploit-db.com/exploits/49678Exploit, Third Party Advisory, VDB Entry
https://www.zeroscience.mk/en/vulnerabilitiesExploit, Third Party Advisory
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5633.phpExploit, Third Party Advisory
https://www.exploit-db.com/exploits/49678Exploit, Third Party Advisory, VDB Entry
https://www.zeroscience.mk/en/vulnerabilitiesExploit, Third Party Advisory
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5633.phpExploit, Third Party Advisory

Timeline

Published: Apr 27, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-28271?

How severe is CVE-2021-28271?

CVE-2021-28271 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.87% probability of exploitation in the next 30 days.

How do I fix CVE-2021-28271?

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-2021-28271?

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

Scan your code now

Source: NVD / NIST