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CVE-2026-47831— Cryptographically Weak Password Generation in bosh-windows-stemcell-builder Allows Remote SSH Brute-Force Attacks

Quick assessment

Affected
Cloud Foundry Foundation bosh-windows-stemcell-builder
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cloud Foundry bosh-windows-stemcell-builder是美国Cloud Foundry组织的一款Windows Stemcell构建工具。 Cloud Foundry bosh-windows-stemcell-builder 2019.98之前版本存在加密问题漏洞，该漏洞源于GenerateRandomPassword函数使用了加密上弱的随机数生成器，可能导致远程攻击者通过TCP/22暴力破解SSH登录。

AI Predicted 9.8 Difficulty: Trivial EPSS 0.19% · P9

Possible ATT&CK Techniques 1 AI

T1110 · Brute Force

Affected Version Matrix 1

VendorProduct Version RangeStatus
Cloud Foundry Foundation bosh-windows-stemcell-builder < 2019.98 affected
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I. Basic Information for CVE-2026-47831

Vulnerability Information
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Vulnerability Title
Cryptographically Weak Password Generation in bosh-windows-stemcell-builder Allows Remote SSH Brute-Force Attacks
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Cloud Foundry bosh-windows-stemcell-builder 加密问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cloud Foundry bosh-windows-stemcell-builder是美国Cloud Foundry组织的一款Windows Stemcell构建工具。 Cloud Foundry bosh-windows-stemcell-builder 2019.98之前版本存在加密问题漏洞，该漏洞源于GenerateRandomPassword函数使用了加密上弱的随机数生成器，可能导致远程攻击者通过TCP/22暴力破解SSH登录。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Cloud Foundry Foundation bosh-windows-stemcell-builder 0 ~ 2019.98 -

II. Public POCs for CVE-2026-47831

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III. Intelligence Information for CVE-2026-47831

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Security Blog Posts for CVE-2026-47831 (1)

IV. Related Vulnerabilities

Same product: bosh-windows-stemcell-builder
Same vendor: Cloud Foundry Foundation

V. Comments for CVE-2026-47831

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