CVE-2026-47831

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-09. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
7.5
EG Score
7.5(high)
EPSS
8.9%
KEV
Not listed

Published

July 9, 2026

Last Modified

July 9, 2026

Advisory Details (1)

Auto-updated Jul 9, 2026
No patch confirmed yet.
generic

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

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

Vendor Advisories for CVE-2026-47831(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Data Freshness Timeline

(refreshed 37× in last 7d / 37× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-15 17:14 UTCEG score recompute
  2. 2026-07-15 17:14 UTCGHSA enrichment
  3. 2026-07-15 16:57 UTCEPSS rescore
  4. 2026-07-15 06:11 UTCEG score recompute
  5. 2026-07-15 06:11 UTCGHSA enrichment
  6. 2026-07-15 02:00 UTCEPSS rescore
  7. 2026-07-14 19:10 UTCEG score recompute
  8. 2026-07-14 19:10 UTCGHSA enrichment
  9. 2026-07-14 08:09 UTCEG score recompute
  10. 2026-07-14 08:08 UTCGHSA enrichment
  11. 2026-07-13 22:30 UTCEPSS rescore
  12. 2026-07-13 21:07 UTCEG score recompute
  13. 2026-07-13 21:07 UTCGHSA enrichment
  14. 2026-07-13 10:06 UTCEG score recompute
  15. 2026-07-13 10:06 UTCGHSA enrichment
  16. 2026-07-13 06:13 UTCEPSS rescore
  17. 2026-07-12 23:02 UTCEG score recompute
  18. 2026-07-12 23:02 UTCGHSA enrichment
  19. 2026-07-12 12:01 UTCEG score recompute
  20. 2026-07-12 12:00 UTCGHSA enrichment
  21. 2026-07-12 05:46 UTCEPSS rescore
  22. 2026-07-12 00:59 UTCEG score recompute
  23. 2026-07-12 00:59 UTCGHSA enrichment
  24. 2026-07-11 13:58 UTCEG score recompute
  25. 2026-07-11 13:58 UTCGHSA enrichment
Show 12 more
  1. 2026-07-11 08:27 UTCEPSS rescore
  2. 2026-07-11 02:56 UTCEG score recompute
  3. 2026-07-11 02:56 UTCGHSA enrichment
  4. 2026-07-10 15:55 UTCEG score recompute
  5. 2026-07-10 15:55 UTCGHSA enrichment
  6. 2026-07-10 04:54 UTCEG score recompute
  7. 2026-07-10 04:54 UTCGHSA enrichment
  8. 2026-07-09 19:10 UTCEPSS rescore
  9. 2026-07-09 17:52 UTCEG score recompute
  10. 2026-07-09 17:52 UTCGHSA enrichment
  11. 2026-07-09 06:51 UTCEG score recompute
  12. 2026-07-09 06:50 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-47831?
CVE-2026-47831 is a high vulnerability published on July 9, 2026. 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.
When was CVE-2026-47831 disclosed?
CVE-2026-47831 was first published in the National Vulnerability Database on July 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-47831 actively exploited?
CVE-2026-47831 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 8.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-47831?
CVE-2026-47831 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-47831?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-47831, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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