Use After Free in Microsoft Windows Server 2012
CVE-2026-42987
Use after free in Windows Deployment Services allows an unauthorized attacker to execute code over a network.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (51.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.007 · change: +0.001
Affected products
- Microsoft Windows Server 2012 — versions 6.2.9200.0
- Microsoft Windows Server 2012 — versions r2
- Microsoft Windows Server 2012 R2 — versions 6.3.9600.0
- Microsoft Windows Server 2012 R2 (Server Core Installation) — versions 6.3.9600.0
- Microsoft Windows Server 2012 (Server Core Installation) — versions 6.2.9200.0
- Microsoft Windows Server 2016 — versions 10.0.14393.0
- Microsoft Windows Server 2016
- Microsoft Windows Server 2016 (Server Core Installation) — versions 10.0.14393.0
- Microsoft Windows Server 2019 — versions 10.0.17763.0
- Microsoft Windows Server 2019
Weakness classification (CWE)
References
- Windows Deployment Services (WDS) Remote Code Execution (vendor-advisory, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-42987?
- CVE-2026-42987 is a high-severity vulnerability in Microsoft Windows Server 2012, classified under Use After Free. CVSS score: 8.1/10. Published 2026-06-09.
- How severe is CVE-2026-42987?
- High severity. CVSS v3 base score is 8.1 out of 10.