CVE-2020-25494

Name: CVE-2020-25494
Creator: NVD / NIST
Published: 2020-12-18T15:15:12.377+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 39.19%

Last modified Jun 17, 2026

CVE-2020-25494 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Xinuos (formerly SCO) Openserver v5 and v6 allows attackers to execute arbitrary commands via shell metacharacters in outputform or toclevels parameter to cgi-bin/printbook.. EPSS estimates a 39.19% chance of exploitation in the next 30 days.

Description

Xinuos (formerly SCO) Openserver v5 and v6 allows attackers to execute arbitrary commands via shell metacharacters in outputform or toclevels parameter to cgi-bin/printbook.

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

39.19%

98.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-78

Affected Software

Vendor	Product	Versions
Xinuos	Openserver	5.0.7
Xinuos	Openserver	6.0

References

http://packetstormsecurity.com/files/160635/SCO-Openserver-5.0.7-Command-Injection.htmlExploit, Third Party Advisory
https://github.com/Ramikan/Vulnerabilities/blob/master/SCO%20Openserver%20OS%20Command%20Injection%20VulnerabilityExploit, Third Party Advisory
http://packetstormsecurity.com/files/160635/SCO-Openserver-5.0.7-Command-Injection.htmlExploit, Third Party Advisory
https://github.com/Ramikan/Vulnerabilities/blob/master/SCO%20Openserver%20OS%20Command%20Injection%20VulnerabilityExploit, Third Party Advisory

Timeline

Published: Dec 18, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-25494?

Xinuos (formerly SCO) Openserver v5 and v6 allows attackers to execute arbitrary commands via shell metacharacters in outputform or toclevels parameter to cgi-bin/printbook.

How severe is CVE-2020-25494?

CVE-2020-25494 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 39.19% probability of exploitation in the next 30 days.

How do I fix CVE-2020-25494?

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-2020-25494?

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

Scan your code now

Source: NVD / NIST