Microsoft patches three zero-days actively exploited by attackers
Vulnerabilities mentioned
All| CVE | Vulnerability | CVSS | EPSS | Signals | Published |
|---|---|---|---|---|---|
| CVE-2025-24052 | Microsoft is aware of vulnerabilities in the third party Agere Modem driver that ships natively with supported Windows operating systems | 7.8 | 2% | ||
CVE-2025-59287+2 related CVEs | Deserialization RCE in Microsoft WSUS (Windows Server) | 9.8 group max | 100% | KEVPoC | KEV |
| CVE-2025-47827 | Secure Boot Bypass via Expired Key in IGEL OS Before 11 (CVE-2025-47827) | 4.6 | 5% | KEVPoC | KEV |
| CVE-2025-55315 | HTTP Request Smuggling in Microsoft ASP.NET Core Enables Security Feature Bypass | 9.9 | 66% | ||
CVE-2025-59234+1 related CVE | Use after free in Microsoft Office allows an unauthorized attacker to execute code locally | 7.8 | <1% |
From the original article
4 min read at helpnetsecurity.com
On October 2025 Patch Tuesday, Microsoft released fixes for 175+ vulnerabilities, including three zero-days under active attack: CVE-2025-24990, CVE-2025-59230, and CVE-2025-47827. CVE-2025-24990 is in the third-party driver ( ltmdm64. sys ) for the software-based Agere Modem, which is used for dial-up internet access and sending/receiving faxes.
By @zeljkazorz · helpnetsecurity.com
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