CVE-2026-41858

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-04 · updated 2026-07-22
Weakness: CWE-338

Description

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 products

Cloud Foundry Foundation windows-utilities-release: before 0.23.0 — fixed in 0.23.0

How to fix

Upgrade to a fixed version: Cloud Foundry Foundation windows-utilities-release 0.23.0. Check the vendor advisory for mitigations.

References

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

Get alerted when CVE-2026-41858 or the next vulnerability affects your stack