CVE-2026-50499: Windows Print Spooler Elevation of Privilege Vulnerability

highCVSS 7.8CVE-2026-50499

Heap-based buffer overflow in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.

CSIRTS triage

vendor: Microsoft product: Windows Print Spooler Privilege escalation

What: Heap-based buffer overflow in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.
Who is affected: Authorized users of Windows Print Spooler.
Urgency: Remediation is urgent due to the high severity and potential for privilege escalation.
Action: Apply the latest security patch for Windows Print Spooler.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: high — CVSS 7.8
Published: 2026-07-14
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50499

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-504990.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 15% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-50499	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for Windows Print Spooler

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

mediumCVE-2026-57085: Out-of-bounds read in Windows Print Spooler Components allows an authorized attacker to disclo…nvd · 2026-07-14
highCVE-2026-50499: Heap-based buffer overflow in Windows Print Spooler Components allows an authorized attacker t…nvd · 2026-07-14
mediumCVE-2026-50383: Buffer over-read in Windows Print Spooler Components allows an authorized attacker to disclose…nvd · 2026-07-14
highCVE-2026-58608: Concurrent execution using shared resource with improper synchronization ('race condition') in…nvd · 2026-07-14
highCVE-2026-58608: Windows Print Spooler Remote Code Execution Vulnerabilitymsrc · 2026-07-14
mediumCVE-2026-57085: Windows Print Spooler Information Disclosure Vulnerabilitymsrc · 2026-07-14