CERT-FR advisory CERTFR-2026-AVI-1405: multiple vulnerabilities in Microsoft Edge allow remote code execution and security policy bypass
CERT-FR published advisory CERTFR-2026-AVI-1405 on 28 October 2026 about multiple vulnerabilities in Microsoft Edge. They allow an attacker to achieve remote arbitrary code execution and a security policy bypass. The advisory relays four Microsoft bulletins dated 27 October 2026: CVE-2026-20942, CVE-2026-62765, CVE-2026-88078 and CVE-2026-96196. It gives no details on exploitability, attack vector or in-the-wild activity.
Entenda a falha
A vulnerabilidade
CERT-FR advisory CERTFR-2026-AVI-1405 covers four Microsoft Edge vulnerabilities: CVE-2026-20942, CVE-2026-62765, CVE-2026-88078 and CVE-2026-96196. Together they allow remote arbitrary code execution and a security policy bypass, but the advisory does not say which CVE causes which impact, nor their severity, attack vector or prerequisites. Affected: Edge 156.x before 156.0.4314.42 and Edge versions before 149.0.4022.62. The fix is to update to those versions, depending on the release branch.
Como foi descoberta
The CERT-FR advisory, published on 28 October 2026, relays four Microsoft security bulletins dated 27 October 2026. It does not say who found the flaws, how they were reported, or whether they have been exploited in the wild.
Explicação gerada por IA a partir da matéria e dos artigos, em 30/10/2026 14:17.
Detalhes técnicos
- Affected: Microsoft Edge 156.x versions prior to 156.0.4314.42.
- Affected: Microsoft Edge versions prior to 149.0.4022.62.
- Impact: remote arbitrary code execution and security policy bypass. The advisory does not map each impact to a specific CVE.
Remediação
- Update Microsoft Edge to the fixed versions (156.0.4314.42 or 149.0.4022.62, depending on the release branch) as described in the Microsoft security bulletins.
Linha do tempo
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CERT-FR advisory CERTFR-2026-AVI-1405: multiple vulnerabilities in Microsoft Edge allow remote code execution and security policy bypass
ler a análise desta fonte ocultar
CERT-FR published advisory CERTFR-2026-AVI-1405 on 28 October 2026 about multiple vulnerabilities in Microsoft Edge. They allow an attacker to achieve remote arbitrary code execution and a security policy bypass. The advisory relays four Microsoft bulletins dated 27 October 2026: CVE-2026-20942, CVE-2026-62765, CVE-2026-88078 and CVE-2026-96196. It gives no details on exploitability, attack vector or in-the-wild activity.
Technical Details
- Affected: Microsoft Edge 156.x versions prior to 156.0.4314.42.
- Affected: Microsoft Edge versions prior to 149.0.4022.62.
- Impact: remote arbitrary code execution and security policy bypass. The advisory does not map each impact to a specific CVE.
Remediation
- Update Microsoft Edge to the fixed versions (156.0.4314.42 or 149.0.4022.62, depending on the release branch) as described in the Microsoft security bulletins.