CVE-2026-61348
HIGHCVSS 7/10EPSS 1.59%
Last modified
CVE-2026-61348 is a high-severity vulnerability rated 7/10 on the CVSS scale. Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.. EPSS estimates a 1.59% chance of exploitation in the next 30 days.
Description
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 1607 | < 10.0.14393.9418 |
| Microsoft | Windows 10 1809 | < 10.0.17763.9115 |
| Microsoft | Windows 10 21h2 | < 10.0.19044.7663 |
| Microsoft | Windows 10 22h2 | < 10.0.19045.7663 |
| Microsoft | Windows 11 23h2 | < 10.0.22631.7517 |
| Microsoft | Windows 11 24h2 | < 10.0.26100.9106 |
| Microsoft | Windows 11 25h2 | < 10.0.26200.9106 |
| Microsoft | Windows 11 26h1 | < 10.0.28000.2704 |
| Microsoft | Windows Server 2012 | All versions |
| Microsoft | Windows Server 2012 | r2 |
| Microsoft | Windows Server 2016 | < 10.0.14393.9418 |
| Microsoft | Windows Server 2019 | < 10.0.17763.9115 |
| Microsoft | Windows Server 2022 | < 10.0.20348.5440 |
| Microsoft | Windows Server 2025 | < 10.0.26100.33222 |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-61348Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-61348?
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
How severe is CVE-2026-61348?
CVE-2026-61348 has a CVSS score of 7/10 (HIGH severity). The EPSS model estimates a 1.59% probability of exploitation in the next 30 days.
How do I fix CVE-2026-61348?
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-2026-61342Vulnerability in the Oracle Hyperion Calculation Manager pro…5.3
- CVE-2026-61343LibreBooking's email template editor save action passes the …8.6
- CVE-2026-61344The Superior Court of California Hearing Reminder Service at…6.9
- CVE-2026-61345Null pointer dereference in Microsoft Remote Registry Servic…6.5
- CVE-2026-61346Use after free in Windows Graphics Kernel allows an authoriz…7
- CVE-2026-61347Buffer over-read in Windows Event Logging Service allows an …5.5
- CVE-2026-61349Use after free in Windows Work Folder Service allows an auth…7.8
- CVE-2026-6135A weakness has been identified in Tenda F451 1.0.0.7_cn_svn7…8.8
- CVE-2026-61350Buffer over-read in Windows NTFS allows an unauthorized atta…4.6
- CVE-2026-61352Concurrent execution using shared resource with improper syn…8.1
- CVE-2026-61353Heap-based buffer overflow in Windows Telephony Service allo…7.8
- CVE-2026-61355Heap-based buffer overflow in Windows Sensor Data Service al…7.8
Are you affected by CVE-2026-61348?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST