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January Microsoft Patch Tuesday

January Microsoft Patch Tuesday. 170 CVEs, 10 of them were added since December MSPT. 3 exploited in the wild: 🔻 EoP – Windows Hyper-V NT Kernel Integration VSP (CVE-2025-21333, CVE-2025-21334, CVE-2025-21335). No details yet. No vulnerabilities have public exploits. 5 have private ones: 🔸 Security Feature Bypass – Microsoft Update Catalog (CVE-2024-49147), MapUrlToZone (CVE-2025-21268, CVE-2025-21189)🔸 […]

Alexander V. Leonov
#vulnerability#windows#microsoft#auth#blog

January Microsoft Patch Tuesday. 170 CVEs, 10 of them were added since December MSPT. 3 exploited in the wild:

🔻 EoP – Windows Hyper-V NT Kernel Integration VSP (CVE-2025-21333, CVE-2025-21334, CVE-2025-21335). No details yet.

No vulnerabilities have public exploits. 5 have private ones:

🔸 Security Feature Bypass – Microsoft Update Catalog (CVE-2024-49147), MapUrlToZone (CVE-2025-21268, CVE-2025-21189)
🔸 EoP – Windows Installer (CVE-2025-21287)
🔸 Auth. Bypass – Azure (CVE-2025-21380)

Notable among the rest:

🔹 RCE – Windows OLE (CVE-2025-21298), Windows RMCAST (CVE-2025-21307), Microsoft Office (CVE-2025-21365), Windows Remote Desktop Services (CVE-2025-21297, CVE-2025-21309), NEGOEX (CVE-2025-21295)
🔹 EoP – Windows NTLM V1 (CVE-2025-21311), Windows Search Service (CVE-2025-21292), Windows App Package Installer (CVE-2025-21275)
🔹 Spoofing – Windows Themes (CVE-2025-21308)

🗒 Full Vulristics report

На русском

Hi! My name is Alexander and I am a Vulnerability Management specialist. You can read more about me here. Currently, the best way to follow me is my Telegram channel @avleonovcom. I update it more often than this site. If you haven’t used Telegram yet, give it a try. It’s great. You can discuss my posts or ask questions at @avleonovchat.

А всех русскоязычных я приглашаю в ещё один телеграмм канал @avleonovrus, первым делом теперь пишу туда.

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Company has issued patches for an unprecedented 159 CVEs, including eight zero-days, three of which attackers are already exploiting.

Microsoft Rings in 2025 With Record Security Update

Company has issued patches for an unprecedented 159 CVEs, including eight zero-days, three of which attackers are already exploiting.

Microsoft Rings in 2025 With Record Security Update

Company has issued patches for an unprecedented 159 CVEs, including eight zero-days, three of which attackers are already exploiting.

Microsoft Rings in 2025 With Record Security Update

Company has issued patches for an unprecedented 159 CVEs, including eight zero-days, three of which attackers are already exploiting.

Microsoft Rings in 2025 With Record Security Update

Company has issued patches for an unprecedented 159 CVEs, including eight zero-days, three of which attackers are already exploiting.

Microsoft Rings in 2025 With Record Security Update

Company has issued patches for an unprecedented 159 CVEs, including eight zero-days, three of which attackers are already exploiting.

Microsoft Rings in 2025 With Record Security Update

Company has issued patches for an unprecedented 159 CVEs, including eight zero-days, three of which attackers are already exploiting.

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Microsoft Patch Tuesday for January 2025 — Snort rules and prominent vulnerabilities

Microsoft has released its monthly security update for January of 2025 which includes 159 vulnerabilities, including 10 that Microsoft marked as “critical.” The remaining vulnerabilities listed are classified as “important.”

Microsoft Patch Tuesday for January 2025 — Snort rules and prominent vulnerabilities

Microsoft has released its monthly security update for January of 2025 which includes 159 vulnerabilities, including 10 that Microsoft marked as “critical.” The remaining vulnerabilities listed are classified as “important.”

Microsoft Patch Tuesday for January 2025 — Snort rules and prominent vulnerabilities

Microsoft has released its monthly security update for January of 2025 which includes 159 vulnerabilities, including 10 that Microsoft marked as “critical.” The remaining vulnerabilities listed are classified as “important.”

Microsoft Patch Tuesday for January 2025 — Snort rules and prominent vulnerabilities

Microsoft has released its monthly security update for January of 2025 which includes 159 vulnerabilities, including 10 that Microsoft marked as “critical.” The remaining vulnerabilities listed are classified as “important.”

Microsoft Patch Tuesday for January 2025 — Snort rules and prominent vulnerabilities

Microsoft has released its monthly security update for January of 2025 which includes 159 vulnerabilities, including 10 that Microsoft marked as “critical.” The remaining vulnerabilities listed are classified as “important.”

Microsoft Patch Tuesday for January 2025 — Snort rules and prominent vulnerabilities

Microsoft has released its monthly security update for January of 2025 which includes 159 vulnerabilities, including 10 that Microsoft marked as “critical.” The remaining vulnerabilities listed are classified as “important.”

Microsoft Patch Tuesday for January 2025 — Snort rules and prominent vulnerabilities

Microsoft has released its monthly security update for January of 2025 which includes 159 vulnerabilities, including 10 that Microsoft marked as “critical.” The remaining vulnerabilities listed are classified as “important.”

Microsoft Patch Tuesday for January 2025 — Snort rules and prominent vulnerabilities

Microsoft has released its monthly security update for January of 2025 which includes 159 vulnerabilities, including 10 that Microsoft marked as “critical.” The remaining vulnerabilities listed are classified as “important.”

Microsoft Patch Tuesday for January 2025 — Snort rules and prominent vulnerabilities

Microsoft has released its monthly security update for January of 2025 which includes 159 vulnerabilities, including 10 that Microsoft marked as “critical.” The remaining vulnerabilities listed are classified as “important.”

Microsoft Patch Tuesday for January 2025 — Snort rules and prominent vulnerabilities

Microsoft has released its monthly security update for January of 2025 which includes 159 vulnerabilities, including 10 that Microsoft marked as “critical.” The remaining vulnerabilities listed are classified as “important.”

Microsoft Patch Tuesday for January 2025 — Snort rules and prominent vulnerabilities

Microsoft has released its monthly security update for January of 2025 which includes 159 vulnerabilities, including 10 that Microsoft marked as “critical.” The remaining vulnerabilities listed are classified as “important.”