CVE-2026-66323

Improper neutralization of parameter/argument delimiters in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.

CVSS 3.1

5.4CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

EPSS

0.4% chance of exploitation in the next 30 days; higher than 35% of CVEs (scores of 2026-10-28)

CWE

CWE-141

Published

2026-08-28

Modified

2026-10-28

Record from

the NVD, synced 2026-10-28

Affected

• microsoft:edge_chromium

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66323

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