What is CVE-2026-47831?

CVE-2026-47831 is a high-severity vulnerability in Cloud Foundry Foundation Bosh-windows-stemcell-builder, classified under CWE-338 USE OF CRYPTOGRAPHICALLY WEAK PSEUDO-RANDOM NUMBER GENERATOR (PRNG). CVSS score: 7.5/10. Published 2026-07-09.

How severe is CVE-2026-47831?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Cloud Foundry Foundation Bosh-windows-stemcell-builder

CVE-2026-47831

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-ste…

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Cloud Foundry Foundation Bosh-windows-stemcell-builder — versions 0

References

security@vmware.com

Frequently asked questions

What is CVE-2026-47831?: CVE-2026-47831 is a high-severity vulnerability in Cloud Foundry Foundation Bosh-windows-stemcell-builder, classified under CWE-338 USE OF CRYPTOGRAPHICALLY WEAK PSEUDO-RANDOM NUMBER GENERATOR (PRNG). CVSS score: 7.5/10. Published 2026-07-09.
How severe is CVE-2026-47831?: High severity. CVSS v3 base score is 7.5 out of 10.