CVE-2026-26143 json
Microsoft PowerShell Security Feature Bypass Vulnerability
published 2026-04-14 6 mo ago modified 2026-10-26 13 d ago also BIT-powershell-2026-26143 , EUVD-2026-22369
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 45%
- public exploits
- 0
- none known
Summary
Improper input validation in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature locally.
Patch / fix
- bitnami powershell 7.4.14, 7.5.5
- Microsoft PowerShell 7.4 7.4.14
- Microsoft PowerShell 7.5 7.5.5
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 6 mo ago
Exploit prediction
0.54% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C |
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| OSV | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | powershell | >=7.4.0, <7.4.14 >=7.5.0, <7.5.5 |
7.4.14 7.5.5 |
Affected products
- Microsoft PowerShell 7.4
- Microsoft PowerShell 7.5
Classification
- Weakness
-
- CWE-20 Improper Input Validation
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2026-26143
vendor-advisory, patch, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-26143
web
Sources
- CVE List CVE-2026-26143
- NVD CVE-2026-26143
- OSV BIT-powershell-2026-26143
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.