CVE-2026-50521
HIGHCVSS 8.3/10EPSS 0.82%
Last modified
CVE-2026-50521 is a high-severity vulnerability rated 8.3/10 on the CVSS scale. Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network.. EPSS estimates a 0.82% chance of exploitation in the next 30 days.
Description
Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Edge Chromium | < 149.0.4022.67 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-50521?
Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network.
How severe is CVE-2026-50521?
CVE-2026-50521 has a CVSS score of 8.3/10 (HIGH severity). The EPSS model estimates a 0.82% probability of exploitation in the next 30 days.
How do I fix CVE-2026-50521?
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-2026-50516Missing authentication for critical function in Microsoft Az…9.4
- CVE-2026-50517Deserialization of untrusted data in M365 Copilot allows an …9.9
- CVE-2026-50518Heap-based buffer overflow in Windows DHCP Server allows an …9.8
- CVE-2026-50519Initialization of a resource with an insecure default in Git…7.5
- CVE-2026-5052Vault’s PKI engine’s ACME validation did not reject local ta…8.6
- CVE-2026-50520Improper neutralization of special elements used in a comman…8.4
- CVE-2026-50522Deserialization of untrusted data in Microsoft Office ShareP…9.8
- CVE-2026-50524Improper validation of specified type of input in .NET Frame…7.5
- CVE-2026-50525Allocation of resources without limits or throttling in .NET…7.5
- CVE-2026-50526Improper link resolution before file access ('link following…5.5
- CVE-2026-50527Stack-based buffer overflow in .NET Framework allows an unau…7.5
- CVE-2026-50528Incorrect authorization in .NET allows an unauthorized attac…8.2
Are you affected by CVE-2026-50521?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST