What is CVE-2025-26643?

CVE-2025-26643 is a medium-severity vulnerability in Microsoft Edge (Chromium-based), classified under CWE-449. CVSS score: 5.4/10. Published 2025-03-07.

How severe is CVE-2025-26643?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Vulnerability in Microsoft Edge (Chromium-based)

CVE-2025-26643

The UI performs the wrong action in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.

EPSS: 0.002 (39.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C.

Affected products

Microsoft Edge (Chromium-based) — versions 1.0.0.0

Weakness classification (CWE)

CWE-449

References

Microsoft Edge (Chromium-based) Spoofing Vulnerability (vendor-advisory, patch)

Frequently asked questions

What is CVE-2025-26643?: CVE-2025-26643 is a medium-severity vulnerability in Microsoft Edge (Chromium-based), classified under CWE-449. CVSS score: 5.4/10. Published 2025-03-07.
How severe is CVE-2025-26643?: Medium severity. CVSS v3 base score is 5.4 out of 10.