CVE-2026-85817
8.8HighPublished 13 Oct 2026 · NVD status: Undergoing Analysis · AI triage by gemini-3.8-flash
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
- Impact
- Full C/I/A compromise
- Weakness
- CWE-807
Impact
Remote attackers can execute arbitrary code on the target machine, but require a user to interact with malicious input or run a malicious script first.
Root cause
Windows PowerShell relies on untrusted inputs when making security decisions, bypassing intended execution controls.
Affected systems
Versions not listed — check the vendor advisory.
CVSS v3.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Fix & remediation
Install the relevant Microsoft security update from the MSRC advisory once released; until patched, restrict execution of untrusted PowerShell scripts and avoid opening untrusted script files.
AI-suggested. Run it in staging first and check it against the vendor advisory. Why?
NVD description
Reliance on untrusted inputs in a security decision in Windows PowerShell allows an unauthorized attacker to execute code over a network.