PatchTheCVECVE-2026-66321: Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an una
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HIGH 7.4WATCHLISTUPGRADE
CVE-2026-66321 is a high-severity flaw (CVSS 7.4) affecting edge chromium. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
Why this priority
- High severity
- On your watchlist
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.4 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 1.1% (top 36%) |
| CISA exploited list | No |
| Weakness | CWE-843 |
| Published | 2026-08-04 |
| Last modified | 2026-10-23 |
Publisher (CNA): Microsoft Corporation · Vendor: microsoft
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
microsoft edge chromium UPGRADE
Affected: < 151.0.4129.59
Fixed in: 151.0.4129.59
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy edge-chromium || rpm -q edge-chromium || edge-chromium --version
2. UPGRADE to 151.0.4129.59 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade edge-chromium
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade edge-chromium
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
Exact fixes by distribution
Fedora 46 · python-trimesh · FIXED · 5.2.0-1.fc46 · FEDORA-2026-429b4bad4c · source
sudo dnf upgrade --advisory=FEDORA-2026-429b4bad4c
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
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