Vulnerability · Published Jul 1, 2026 · Assigned by microsoft
CVE-2026-50521Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
High 8.3
In plain English
A high-severity use-after-free in Microsoft Edge (Chromium-based) from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 57% of all known vulnerabilities).
Severity (CVSS 3.1)8.3High
Exploit odds (30 days)0.8%top 42.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft Edge (Chromium-based) | 1.0.0.0 – before 149.0.4022.68 |
Weakness: CWE-416 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L/E:U/RL:O/RC:C
References
- Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability vendor-advisory, patch