Multiple Microsoft product vulnerabilities disclosed
Free public brief. The indicators, the detections with Splunk SPL already written (plus Elastic and KQL where they apply), and a Slack alert the next time this touches a vendor you run are in the app — free account, no card.
Microsoft vulnerabilities CVE-2026-42504 and CVE-2026-42507 allow unspecified security impact; patches available.
CERT-FR has published an advisory on multiple vulnerabilities affecting Microsoft products, identified as CVE-2026-42504 and CVE-2026-42507. Both vulnerabilities were disclosed on 5 June 2026. The advisory notes that these vulnerabilities could allow an attacker to cause an unspecified security problem, though the vendor has not publicly detailed the specific impact or attack vector. The advisory references the official Microsoft Security Response Center (MSRC) bulletins as the authoritative source for patch availability and mitigation guidance. Defenders should consult the referenced MSRC bulletins to determine which specific Microsoft products and versions are affected and apply patches accordingly.
Mentioned in this report
Source reporting: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-0701
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 its extracted indicators, its detections (Splunk SPL already written, plus Elastic and Microsoft KQL where they apply), the actors and CVEs it names as live profiles, and the vendor research on the same campaign — the primary source the news paraphrased, cited and read directly.
It sits in a corpus of 13,854 reports from 146 sources, 616 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. Name the vendors you run and Slack hears about the reports that touch them — about forty a week that are yours, not the four hundred that are not.
Create a free account What it costs