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Fencer Vulns
medium 4.1

CVE-2019-1167 json

System.Management.Automation subject to bypass via script debugging

published 2019-07-17 7 y ago modified 2026-06-17 4 mo ago also GHSA-5frh-8cmj-gc59 , EUVD-2019-0577

cvss
4.1
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits
0
none known

Summary

A security feature bypass vulnerability exists in Windows Defender Application Control (WDAC) which could allow an attacker to bypass WDAC enforcement, aka 'Windows Defender Application Control Security Feature Bypass Vulnerability'.

Patch / fix

  • nuget System.Management.Automation 6.1.5, 6.2.2

Exploit prediction

1.11% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 4.1 CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 1.9 AV:L/AC:M/Au:N/C:P/I:N/A:N
GitHub 3.0 4.1 CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
nuget System.Management.Automation
>=6.2.0, <6.2.2
>=6.1.0, <6.1.5
6.2.2
6.1.5

Affected products

  • Microsoft PowerShell Core

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.