EUVD-2026-43770
GHSA-q5vw-xwmg-v79f
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V15 - Secure Coding and Architecture Concurrency control, locking
MITRE ATT&CK
1 technique across 1 tactic: Privilege Escalation The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
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Alert meAnalysisAIv2 – Jul 20, 2026
Remote code execution in the Windows Print Spooler components stems from an improperly synchronized race condition (CWE-362) that an authenticated, network-adjacent attacker can win to run code with full system impact. Microsoft (the reporter) has shipped fixes across the entire supported Windows and Windows Server line, but exploitation requires low privileges and a hard-to-hit timing window, so this is a real-but-non-trivial priority rather than a drop-everything emergency. There is no public exploit identified at time of analysis, EPSS is low at 0.53% (41st percentile), and CISA SSVC scores exploitation as none.
Earlier versions of this analysis (1)
Network code execution in the Windows Print Spooler service allows an authenticated attacker to win a synchronization race and run arbitrary code across a broad range of Windows client and server builds (Windows 10 1607 through Windows 11 26H1, and Windows Server 2012 through 2025). Microsoft rates it CVSS 8.8 with high confidentiality, integrity, and availability impact; a vendor patch is available, and there is no public exploit identified at time of analysis. Note that the CVE description and CVSS indicate remote code execution while the source tags label it 'Information Disclosure' — a discrepancy defenders should verify against the MSRC advisory.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 31 packages in microsoft, euvd
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Primary rating from Vendor (microsoft).
CVSS VectorNVD
Lifecycle Timeline
2DescriptionNVD
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Print Spooler Components allows an authorized attacker to execute code over a network.
Executive ViewAI
A race condition in Windows Print Spooler services (CVE-2026-58608) enables authenticated, network-adjacent attackers to execute arbitrary code with full system privileges across Windows and Windows Server environments, though no public exploit has been identified at time of analysis. Real-world exploitation requires defeating a narrow, hard-to-hit timing window in service behavior, substantially limiting practical attack likelihood despite the high severity rating. Microsoft has released patches across all supported Windows versions, enabling prompt remediation through standard change management.
Within 24 hours, inventory all Windows and Windows Server systems running Print Spooler service and confirm patch availability for your specific version mix. Within 7 days, deploy the vendor-released patch to non-production systems, validate printing functionality remains intact, and establish a staged production rollout prioritizing systems supporting user access or network services. Within 30 days, complete full deployment of the vendor-released patch to all affected Windows and Windows Server systems, with particular attention to Tier 1 and DMZ networks.
Apply vendor patch.
Threat Intelligence Overview
NVD
CVE.org
EPSS
Vulnrichment
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.
Race conditions occur when multiple concurrent requests exploit the brief time gap between checking a condition and acting upon it (TOCTOU - Time of Check, Time of Use).
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