CSIRTS // UNIFIED SECURITY ADVISORY FEEDSYS ● ONLINE · POWERED BY INTELFUSIONS.COM

← Back to feed

CVE-2026-42987: Windows Deployment Services (WDS) Remote Code Execution

highCVSS 8.1CVE-2026-42987
Use after free in Windows Deployment Services allows an unauthorized attacker to execute code over a network.

CSIRTS triage

vendor: Microsoftproduct: Windows Deployment ServicesRemote code execution
What
A use after free vulnerability in Windows Deployment Services allows unauthorized remote code execution.
Who is affected
Unauthorized attackers can exploit this vulnerability in Windows Deployment Services.
Urgency
Remediation is urgent due to the high severity and potential for exploitation.
Action
Patch Windows Deployment Services to mitigate this vulnerability.

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

⚡ Watch Windows Deployment Services

Get an email when a new Windows Deployment Services advisory drops — max one per day, one-click unsubscribe.

Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
high — CVSS 8.1
Published
2026-06-09
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42987

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.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-42987coverage & exploitation statusNVD · CVE.org

Recent advisories for Windows Deployment Services

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.

More from Microsoft Security Response Center