CVE-2026-83578

CRITICAL 9.8CVE-2026-83578 · Published 13/10/2026 · updated 29/10/2026

In short

CVE-2026-83578 is a CRITICAL (CVSS 9.8) vulnerability.
Chance of exploitation in the next 30 days (EPSS): 1.1%, higher than 64.6% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
—	No affected product versions are listed for this vulnerability yet.

Integer underflow (wrap or wraparound) in Windows PowerShell allows an unauthorized attacker to execute code over a network.

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