CVE-2021-34527CISA KEVEPSS p100.0%

CVE-2021-34527Microsoft Windows Print Spooler Remote Code Execution Vulnerability

Microsoft / Windows

Description

Microsoft Windows Print Spooler contains an unspecified vulnerability due to the Windows Print Spooler service improperly performing privileged file operations. Successful exploitation allows an attacker to perform remote code execution with SYSTEM privileges. The vulnerability is also known under the moniker of PrintNightmare.

Scoring

EPSS99.76% probability of exploitation · percentile 100.0% · 2026-06-18T12:00:27Z

CISA KEV entry

Added to KEV: 2021-11-03

(incoming)1

TypeTargetConfidenceTier
KEVEntryMicrosoft Windows Print Spooler Remote Code Execution Vulnerabilitykev-cve-2021-345270%live

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Nearest entities by semantic similarity across the cs-graph corpus.

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Sourced from NVD + CISA KEV + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.