CVE-2026-42987
HIGHCVSS 8.1/10EPSS 0.59%
Last modified
CVE-2026-42987 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. Use after free in Windows Deployment Services allows an unauthorized attacker to execute code over a network.. EPSS estimates a 0.59% chance of exploitation in the next 30 days.
Description
Use after free in Windows Deployment Services allows an unauthorized attacker to execute code over a network.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows Server 2012 | All versions |
| Microsoft | Windows Server 2012 | r2 |
| Microsoft | Windows Server 2016 | < 10.0.14393.9234 |
| Microsoft | Windows Server 2019 | < 10.0.17763.8880 |
| Microsoft | Windows Server 2022 | < 10.0.20348.5256 |
| Microsoft | Windows Server 2025 | < 10.0.26100.32995 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-42987?
Use after free in Windows Deployment Services allows an unauthorized attacker to execute code over a network.
How severe is CVE-2026-42987?
CVE-2026-42987 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 0.59% probability of exploitation in the next 30 days.
How do I fix CVE-2026-42987?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-42981Integer underflow (wrap or wraparound) in Windows Performanc…8.1
- CVE-2026-42982Improper validation of consistency within input in Windows S…7.8
- CVE-2026-42983Use after free in Windows DWM Core Library allows an authori…7.8
- CVE-2026-42984Use after free in Windows Kernel allows an authorized attack…7
- CVE-2026-42985Use after free in Remote Desktop Client allows an unauthoriz…8.8
- CVE-2026-42986Use after free in Microsoft Graphics Component allows an aut…7.8
- CVE-2026-42989Improper link resolution before file access ('link following…7.8
- CVE-2026-4299The MainWP Child Reports plugin for WordPress is vulnerable …5.3
- CVE-2026-42990Heap-based buffer overflow in SQL Server ODBC driver allows …9.8
- CVE-2026-42991Concurrent execution using shared resource with improper syn…7.8
- CVE-2026-42992Heap-based buffer overflow in Remote Desktop Client allows a…7.5
- CVE-2026-42993Heap-based buffer overflow in Remote Desktop Client allows a…7.5
Are you affected by CVE-2026-42987?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST