# CERT-FR warns of Microsoft Edge flaws

Published: 2026-10-28 · Severity: routine
Canonical: https://vorant.io/reports/a4ffa678-c24e-5427-87f0-c69d42912e78/cert-fr-warns-of-microsoft-edge-flaws
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> CERT-FR advises multiple Microsoft Edge vulnerabilities allow remote code execution and security bypass; patches available.

Source: cert.cyber.gouv.fr — https://www.cert.cyber.gouv.fr/avis/CERTFR-2026-AVI-1405

## What to check

- Applies to: The 4 CVEs named below. Whether you run an affected version is not assessed: check the versions the source lists.
- Exploitation: No exploitation in the wild and no public exploit is recorded for the CVEs named.

CERT-FR has published an advisory covering multiple vulnerabilities in Microsoft Edge affecting versions 156.x prior to 156.0.4314.42 and versions prior to 149.0.4022.62. The flaws, tracked as CVE-2026-20942, CVE-2026-62765, CVE-2026-88078, and CVE-2026-96196, could allow an attacker to achieve remote arbitrary code execution and bypass security policy controls within the browser.

No evidence of active in-the-wild exploitation is mentioned in the advisory. CERT-FR recommends organizations refer to the official Microsoft security bulletins for each CVE to obtain and apply the relevant patches. This is a routine vendor patch advisory rather than a report of an active campaign.

## Mentioned in this report

- Vulnerabilities: CVE-2026-20942, CVE-2026-62765, CVE-2026-88078, CVE-2026-96196

Source reporting: https://www.cert.cyber.gouv.fr/avis/CERTFR-2026-AVI-1405

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