High severity · published Jul 9, 2026
CVE-2026-47830
Incorrect Permission Assignment Allows Local Privilege Escalation to SYSTEM via Executable Overwrite
8.8
CVSS
0.1%
EPSS
No
On KEV
Description
Incorrect Permission Assignment in BOSH.Utils.psm1 in BOSH-Ecosystem bosh-windows-stemcell-builder allows low-privilege authenticated users to overwrite C:\bosh\service_wrapper.exe or C:\bosh\bosh-agent.exe and gain NT AUTHORITY\SYSTEM on the next service restart or reboot. This can lead to full host control.
Affected versions: bosh-windows-stemcell-builder versions prior to v2019.98.
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 4% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BO
bosh-windows-stemcell-builder · Cloud Foundry Foundation
before 2019.98 · source: vendor
Affected product
BO
bosh-windows-stemcell-builder
Cloud Foundry Foundation
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-47830
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-47830
www.cloudfoundry.org
https://www.cloudfoundry.org/blog/cve-2026-47830-incorrect-permission-assignment-allows-local-privilege-escalation-to-system-via-executable-overwrite/
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