What is CVE-2023-29354?

CVE-2023-29354 is a medium-severity vulnerability in Microsoft Edge Chromium, classified under Protection Mechanism Failure. CVSS score: 4.7/10. Published 2023-05-05.

How severe is CVE-2023-29354?

Medium severity. CVSS v3 base score is 4.7 out of 10.

Vulnerability in Microsoft Edge Chromium

CVE-2023-29354

Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability

Published 2023-05-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.014 (71.4th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 71.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Microsoft Edge Chromium
Microsoft Edge (Chromium-Based) — versions 1.0.0

Weakness classification (CWE)

CWE-693 — Protection Mechanism Failure

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2023-29354 (vendor-advisory, Patch, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Third Party Advisory)

Frequently asked questions

What is CVE-2023-29354?: CVE-2023-29354 is a medium-severity vulnerability in Microsoft Edge Chromium, classified under Protection Mechanism Failure. CVSS score: 4.7/10. Published 2023-05-05.
How severe is CVE-2023-29354?: Medium severity. CVSS v3 base score is 4.7 out of 10.