CVE-2026-41858

Summary

Weak Randomness / Insecure Cryptographic Primitive (CWE-338) in Get-RandomPassword in BOSH-Ecosystem / windows-utilities-release allows a network attacker to estimate VM boot time and reconstruct a small candidate list to recover the Administrator password. The randomize_password job exists solely to lock the local Administrator account behind an unguessable password as a hardening control. Because the password is derived from a predictable, clock-seeded PRNG, a network attacker who can estimate VM boot time can reconstruct a small candidate list and recover the Administrator password, defeating the hardening control.

Affected versions:

• windows-utilities-release: all versions prior to v0.23.0 (inclusive); fixed in v0.23.0 or later

Affected Software

Weaknesses

• CWE-338: CWE-338: Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: yes
  • Technical Impact: partial

References

• https://www.cloudfoundry.org/blog/cve-2026-41858-brute-forceable-windows-admin-creds/

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