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Fencer Vulns
medium 6.5

CVE-2026-96303 json

Microsoft PowerShell Security Feature Bypass Vulnerability

published 2026-10-13 26 d ago modified 2026-10-31 8 d ago also BIT-powershell-2026-96303 , EUVD-2026-100222

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits
0
none known

Summary

Improperly implemented security check for standard in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature over a network.

Patch / fix

  • bitnami powershell 7.4.21, 7.5.12, 7.6.7
  • Microsoft PowerShell 7.4 7.4.21
  • Microsoft PowerShell 7.5 7.5.12
  • Microsoft PowerShell 7.6 7.6.8
  • powershell Alpine 3.24 7.6.9-r0

alpine advisories ALPINE-CVE-2026-96303

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
26 d ago

Exploit prediction

0.69% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
OSV 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Affected packages

ecosystem package affected fixed in
bitnami powershell
>=7.4.0, <7.4.21
>=7.5.0, <7.5.12
>=7.6.0, <7.6.7
7.4.21
7.5.12
7.6.7

Affected products

  • Microsoft PowerShell 7.4
  • Microsoft PowerShell 7.5
  • Microsoft PowerShell 7.6

Classification

Weakness
  • CWE-358 Improperly Implemented Security Check for Standard

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.