High severity · published Jul 9, 2026
CVE-2026-47831
Cryptographically Weak Password Generation in bosh-windows-stemcell-builder Allows Remote SSH Brute-Force Attacks
7.5
CVSS
0.3%
EPSS
No
On KEV
Description
Use of a cryptographically weak random number generator in the GenerateRandomPassword function in bosh-windows-stemcell-builder allows a remote attacker to brute-force the resulting SSH login via TCP/22.
Affected versions: bosh-windows-stemcell-builder versions prior to v2019.98.
CVSS vector
CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Adjacent
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 25% 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-2026-47831
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-47831
www.cloudfoundry.org
https://www.cloudfoundry.org/blog/cve-2026-47831-cryptographically-weak-password-generation-in-bosh-windows-stemcell-builder-allows-remote-ssh-brute-force-attacks/
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