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CVE-2026-47831

Cryptographically Weak Password Generation in bosh-windows-stemcell-builder Allows Remote SSH Brute-Force Attacks

HIGH
7.7
CVSS Score
Published: July 9, 2026 at 06:26 AM UTC
Updated: October 25, 2026 at 05:10 PM UTC
1 product affected across 1 vendorBosh Windows Stemcell Builder

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Severity
HIGH7.7
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Bosh Windows Stemcell Builder· Cloudfoundry
90%
v < 2019.98
Affected range stops below 2019.98, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord
https://www.cloudfoundry.org/blog/cve-2026-47831-cryptographically-weak-password-generation-in-bosh-windows-stemcell-builder-allows-remote-ssh-brute-force-attacks/

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.7HIGHvmware
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE

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