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Fencer Vulns
critical 9.8

CVE-2020-25494 in the critical feed json

Xinuos (formerly SCO) Openserver v5 and v6 allows attackers to execute arbitrary commands via shell metacharacters in outputform or tocleve…

published 2020-12-18 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-18179

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
39.2%
EPSS 39.2% chance of exploitation in 30 days, percentile 98%
public exploits
1
Exploit-DB

Summary

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.

Timeline

  1. Published
  2. First public exploit (EDB-49301)

Exploit prediction

39.19% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-49301 SCO Openserver 5.0.7 - 'outputform' Command Injection webapps, 2020-12-21
  • github.com https://github.com/Ramikan/Vulnerabilities/blob/master/SCO%20Openserver%20OS%20Command%20Injection%20Vulnerability referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/160635/SCO-Openserver-5.0.7-Command-Injection.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.