Microsoft Windows Patches Multiple Vulnerabilities
ANSSI advisory covers multiple Windows vulnerabilities allowing remote code execution, privilege escalation, and data confidentiality breaches.
Sourcecert.ssi.gouv.fr — open the original
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.
ANSSI (CERT-FR) issued an advisory detailing multiple vulnerabilities affecting Microsoft Windows 10, Windows 11, Windows Admin Center, and Windows Terminal App. The flaws could allow an attacker to achieve remote code execution, escalate privileges, bypass security policy, or compromise data confidentiality across a wide range of Windows 10 and 11 versions and Windows Admin Center.
Four CVEs are referenced (CVE-2026-56171, CVE-2026-58598, CVE-2026-58643, CVE-2026-59117), tied to a Microsoft security bulletin dated 16 July 2026. No public exploitation or proof-of-concept is mentioned in the advisory; the recommended remediation is to apply vendor-supplied patches referenced in the official Microsoft update guide.
Mentioned in this report
Source reporting: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-0895
Free public brief. Slack alerts on the vendors you run come with the paid plans, and a new account gets three days of them, no card.
What this brief leaves out
This page is the free tier: the write-up, the severity, the names. In the app the same report carries live profiles of the CVEs it names. The paid plans add the security research and news reporting the free tier leaves out.
It sits in a corpus of 16,433 reports from 149 sources, 661 of them written in the last seven days, and it grows through the day.
A new account starts with three days of all of it, no card, then keeps the government and CERT reporting free. Slack alerts are a paid-plan feature: name the vendors you run and Slack hears about the reports that touch them, not the rest of the week's. Nothing is charged unless you subscribe.
Create a free account What it costs