MicrosoftCVE-2026-66323
Microsoft Edge for: remote code execution
Medium5.4CVE-2026-66323 · Published Aug 28, 2026 · updated Sep 11, 2026
Improper neutralization of parameter/argument delimiters in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Microsoft Edge for Android Product | >= 1.0.0.0, < 152.0.4191.52 | 152.0.4191.52 |
| Microsoft Edge for Linux Product | >= 1.0.0, < 152.0.4191.52 | 152.0.4191.52 |
| Microsoft Edge for MAC Product | >= 1.0.0.0, < 152.0.4191.52 | 152.0.4191.52 |
| Microsoft Edge for Windows Product | >= 1.0.0.0, < 152.0.4191.52 | 152.0.4191.52 |
| Microsoft Edge for iOS Product | >= 1.0.0.0, < 152.0.4191.52 | 152.0.4191.52 |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-141
More Microsoft advisories
All Microsoft| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Aug 28 | Microsoft Edge: type confusion | High8.8 | 152.0.4191.53+2 more |
| Aug 28 | Microsoft Edge: spoofing | Medium5.4 | 150.0.4078.50+1 more |
| Aug 28 | Microsoft Edge (Chromium-based): origin validation error | Medium5.4 | 150.0.4078.65 |
| Aug 28 | Microsoft Edge for: spoofing | Medium6.5 | 152.0.4191.52+2 more |
| Aug 28 | Microsoft Edge: use after free | Medium4.3 | 152.0.4191.52+2 more |
| Aug 28 | Microsoft Edge: improper authorization | Medium5.4 | 152.0.4191.52+2 more |