by Kastro
Paper/Archive/CVE-2026-66321

CVE-2026-66321

Microsoft Microsoft Edge (Chromium-based) — Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability

EPSS 1%CVSS 9.6
critical.is priorityof 100
42
CVSS 9.6 (NVD)9.6 / 10 × 3028.8Not in CISA KEV+300.0EPSS percentile 64.7.647 × 2012.9No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.

Affected

ProductAffectedFixed inSource
Microsoft Edge (Chromium-based)1.0.0.0 – < 151.0.4129.59151.0.4129.59CNA

Scores by source

NVD9.6CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
microsoft (CNA)7.4CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

patchmsrc.microsoft.com/update-guide/vulnerability/CVE-2026-66321