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Fencer Intel
high 8.8

CVE-2019-12840 in the critical feed json

In Webmin through 1.910, any user authorized to the "Package Updates" module can execute arbitrary commands with root privileges via the da…

published 2019-06-15 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-4420

cvss
8.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
77.6%
EPSS 77.6% chance of exploitation in 30 days, percentile 99.5%
public exploits
2
Metasploit, Exploit-DB

Summary

In Webmin through 1.910, any user authorized to the "Package Updates" module can execute arbitrary commands with root privileges via the data parameter to update.cgi.

Timeline

  1. First public exploit (Metasploit exploit/linux/http/webmin_packageup_rce)
  2. Published

Exploit prediction

77.65% chance of exploitation in the next 30 days, higher than 99.5% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • Metasploit exploit/linux/http/webmin_packageup_rce Webmin Package Updates Remote Command Execution metasploit exploit, excellent rank, 2019-05-16
  • EDB-46984 Webmin 1.910 - 'Package Updates' Remote Command Execution (Metasploit) remote, 2019-06-11
  • pentest.com.tr https://pentest.com.tr/exploits/Webmin-1910-Package-Updates-Remote-Command-Execution.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 9.0 AV:N/AC:L/Au:S/C:C/I:C/A:C

Classification

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

References

Sources

Fencer Intel 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.