CVE-2026-42901
CRITICALCVSS 10/10EPSS 0.30%
Last modified
CVE-2026-42901 is a critical-severity vulnerability rated 10/10 on the CVSS scale. Origin validation error in Microsoft Entra ID allows an unauthorized attacker to elevate privileges over a network.. EPSS estimates a 0.30% chance of exploitation in the next 30 days.
Description
Origin validation error in Microsoft Entra ID allows an unauthorized attacker to elevate privileges over a network.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Entra Id | All versions |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-42901?
Origin validation error in Microsoft Entra ID allows an unauthorized attacker to elevate privileges over a network.
How severe is CVE-2026-42901?
CVE-2026-42901 has a CVSS score of 10/10 (CRITICAL severity). The EPSS model estimates a 0.30% probability of exploitation in the next 30 days.
How do I fix CVE-2026-42901?
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
- Same Subject, Wrong User: A Cross-Issuer Account Takeover in n8nStrix found an identity-binding bug in n8n's token-exchange flow enabling account takeover.
- 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-2026-42896Integer overflow or wraparound in Windows DWM Core Library a…7.8
- CVE-2026-42897Improper neutralization of input during web page generation …6.1
- CVE-2026-42898Improper control of generation of code ('code injection') in…9.9
- CVE-2026-42899Loop with unreachable exit condition ('infinite loop') in AS…7.5
- CVE-2026-4290The WP Travel Pro plugin for WordPress is vulnerable to arbi…9.1
- CVE-2026-42900Concurrent execution using shared resource with improper syn…8.1
- CVE-2026-42902Improper authorization in Microsoft PowerToys allows an auth…7.8
- CVE-2026-42903Null pointer dereference in Windows Kerberos allows an autho…6.5
- CVE-2026-42904Heap-based buffer overflow in Windows TCP/IP allows an unaut…9.6
- CVE-2026-42905Use after free in Windows DWM Core Library allows an authori…7.8
- CVE-2026-42906Exposure of sensitive information to an unauthorized actor i…5.5
- CVE-2026-42907Exposure of sensitive information to an unauthorized actor i…6.5
Are you affected by CVE-2026-42901?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST