CVE-2026-50684
MEDIUMCVSS 4.8/10EPSS 0.38%
Last modified
CVE-2026-50684 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. Improper neutralization of input during web page generation ('cross-site scripting') in Active Directory Federation Services (AD FS) allows an authorized attacker to perform spoofing over a network.. EPSS estimates a 0.38% chance of exploitation in the next 30 days.
Description
Improper neutralization of input during web page generation ('cross-site scripting') in Active Directory Federation Services (AD FS) allows an authorized attacker to perform spoofing over a network.
Metrics
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 1607 | < 10.0.14393.9339 |
| Microsoft | Windows 10 1809 | < 10.0.17763.9020 |
| Microsoft | Windows Server 2012 | All versions |
| Microsoft | Windows Server 2012 | r2 |
| Microsoft | Windows Server 2016 | < 10.0.14393.9339 |
| Microsoft | Windows Server 2019 | < 10.0.17763.9020 |
| Microsoft | Windows Server 2022 | < 10.0.20348.5386 |
| Microsoft | Windows Server 2025 | < 10.0.26100.33158 |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50684Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-50684?
Improper neutralization of input during web page generation ('cross-site scripting') in Active Directory Federation Services (AD FS) allows an authorized attacker to perform spoofing over a network.
How severe is CVE-2026-50684?
CVE-2026-50684 has a CVSS score of 4.8/10 (MEDIUM severity). The EPSS model estimates a 0.38% probability of exploitation in the next 30 days.
How do I fix CVE-2026-50684?
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-2026-50679Heap-based buffer overflow in Microsoft Windows Search Compo…7.8
- CVE-2026-5068A remote, unauthenticated BLE peer can trigger a 2-byte out-…8.8
- CVE-2026-50680Heap-based buffer overflow in Windows Hyper-V allows an auth…7.8
- CVE-2026-50681Exposure of sensitive information to an unauthorized actor i…5.5
- CVE-2026-50682Out-of-bounds read in Windows Active Directory allows an aut…7.1
- CVE-2026-50683Heap-based buffer overflow in Windows DHCP Server allows an …8
- CVE-2026-50685Double free in Windows DHCP Server allows an authorized atta…7.5
- CVE-2026-50686Access of resource using incompatible type ('type confusion'…8.1
- CVE-2026-50687Use after free in Windows Kernel allows an authorized attack…7.8
- CVE-2026-50688Use after free in Windows Kernel allows an authorized attack…7.8
- CVE-2026-50689Use after free in Windows Clipboard Server allows an authori…7.8
- CVE-2026-5069The Fluent Forms plugin for WordPress is vulnerable to incor…5.4
Are you affected by CVE-2026-50684?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST