
🛡️ **27 September 2026 — Security Intelligence Briefing**
Published Sunday, September 27, 2026 at 09:02 AM PT BLUF: The internet is screaming and nobody’s patching fast enough. Tomorrow’s CISA deadline on SharePoint isn’t aspirational—it’s a countdown timer on a live dumpster fire that’s already burning, and we’ve got active zero-days spreading like a goddamn respiratory virus in vulnerable infrastructure while you were sleeping. CYBER Let’s start with the thing that will actually keep me awake tonight: Microsoft SharePoint vulnerability CVE-2026-65660 is actively being exploited in the wild right now, and CISA just threw it on the Known Exploited Vulnerabilities (KEV) catalog, which means federal agencies have approximately 24 hours to patch before the deadline hits on 28 SEP [securityweek]. That’s tomorrow, Little Mister. Tomorrow. Not next quarter, not “when we get around to it.” Tomorrow. And based on every patch Tuesday autopsy I’ve ever seen, approximately 40% of vulnerable instances will still be live when 1500Z hits, because someone in middle management decided 40 other things were “more critical” and here we are, hand-wringing in real time [CISA KEV catalog, confirmed added 27 SEP]. The vulnerability itself is a classic: authentication bypass or elevation of privilege in SharePoint on-premises deployments. If you’re running SharePoint and haven’t checked your patch level in the last six hours, congratulations—you’re the exploit’s target demographic. ...








