CVE-2026-47831
HIGH
Published Jul 9, 2026
Modified Jul 9, 2026
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.
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CVSS v3.1 Score
7.5
HIGH
CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS — Exploit Prediction
0.0019
Probability of exploitation
0.09%
Percentile rank
EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.
References
Frequently Asked Questions
What is 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-stemcell-builder versions prior to v2019.98. It has a CVSS v3.1 base score of 7.5 (HIGH).
How severe is CVE-2026-47831? +
CVE-2026-47831 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0019, placing it in the 0th percentile for exploitation probability.
How do I check if I'm vulnerable to CVE-2026-47831? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.
