Tag Archives: Microsoft

About Elevation of Privilege – Windows Remote Access Connection Manager (CVE-2025-59230) vulnerability

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About Elevation of Privilege - Windows Remote Access Connection Manager (CVE-2025-59230) vulnerability

About Elevation of Privilege – Windows Remote Access Connection Manager (CVE-2025-59230) vulnerability. A vulnerability from the October Microsoft Patch Tuesday. The Windows Remote Access Connection Manager (RasMan) service is a core Windows component that manages dial-up and Virtual Private Network (VPN) connections, ensuring secure communication between a computer and remote networks. An access control flaw in the RasMan service could allow an authenticated attacker to elevate privileges to the SYSTEM level.

👾 On October 14, Microsoft reported signs of the vulnerability being exploited in the wild. On October 22, it was added to the CISA KEV catalog. No further details about the attacks have been disclosed so far.

🛠 No public exploits have been observed yet.

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About Remote Code Execution – Windows LNK File (CVE-2025-9491) vulnerability

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About Remote Code Execution - Windows LNK File (CVE-2025-9491) vulnerability

About Remote Code Execution – Windows LNK File (CVE-2025-9491) vulnerability. A vulnerability in the Microsoft Windows shortcut (.LNK) handling mechanism allows malicious command-line arguments to be hidden in the Target field using whitespace characters, making them invisible to standard tools. Opening such an LNK file may lead to arbitrary code execution.

🔻 Peter Girnus, an expert at Trend Micro, notified Microsoft about the vulnerability on September 20, 2024, but they decided not to fix it. 🤷‍♂️ On August 26, 2025, this 0-day vulnerability (ZDI-CAN-25373) was assigned the identifier CVE-2025-9491.

👾 On March 18, 2025, Trend Micro reported that this vulnerability was exploited in APT attacks, and on October 30, Arctic Wolf Labs confirmed it was used to deploy PlugX malware against Hungarian and Belgian diplomatic missions.

🛠 The method for modifying .LNK files is described in the Trend Micro report.

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About Remote Code Execution – Windows Server Update Services (WSUS) (CVE-2025-59287) vulnerability

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About Remote Code Execution - Windows Server Update Services (WSUS) (CVE-2025-59287) vulnerability

About Remote Code Execution – Windows Server Update Services (WSUS) (CVE-2025-59287) vulnerability. WSUS is a legacy Windows Server component that allows IT administrators to manage the download and installation of Microsoft product updates on computers within a local network. Vulnerability summary: An unauthenticated remote attacker can execute code with SYSTEM privileges on a Windows server with the WSUS Server Role enabled (it is disabled by default) by sending specially crafted POST requests. This is possible due to a flaw in deserializing untrusted data.

⚙️ Initial patches were released on October 14 as part of Microsoft’s October Patch Tuesday.

🛠 A public exploit has been available on GitHub since October 18.

⚙️ On October 24, Microsoft released additional patches to fully address the vulnerability (server reboot is required).

👾 On October 24, the vulnerability was added to the CISA KEV, and there are reports of observed exploitation attempts.

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October Microsoft Patch Tuesday

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October Microsoft Patch Tuesday

October Microsoft Patch Tuesday. A total of 213 vulnerabilities – twice as many as in September. Of these, 41 vulnerabilities were added between the September and October MSPT. There are four vulnerabilities with evidence of exploitation in the wild:

🔻 SFB – IGEL OS (CVE-2025-47827) – public exploit available
🔻 EoP – Windows Agere Modem Driver (CVE-2025-24990)
🔻 EoP – Windows Remote Access Connection Manager (CVE-2025-59230)
🔻 MemCor – Chromium (CVE-2025-10585)

Another vulnerability with a public PoC exploit:

🔸 RCE – Unity Runtime (CVE-2025-59489)

Among the remaining vulnerabilities with no public exploits or signs of exploitation in the wild, the following stand out:

🔹 RCE – WSUS (CVE-2025-59287), Microsoft Office (CVE-2025-59227, CVE-2025-59234)
🔹 EoP – Windows Agere Modem Driver (CVE-2025-24052), Windows Cloud Files Mini Filter Driver (CVE-2025-55680)

🗒 Full Vulristics Report

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September Microsoft Patch Tuesday

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September Microsoft Patch Tuesday

September Microsoft Patch Tuesday. A total of 103 vulnerabilities, 29 fewer than in August. Of these, 25 vulnerabilities were added between the August and September MSPT. So far, no vulnerabilities are known to be exploited in the wild. Two have public PoC exploits:

🔸 DoS – Newtonsoft.Json (CVE-2024-21907)
🔸 EoP – Azure Networking (CVE-2025-54914)

Notable among the other vulnerabilities without public exploits:

🔹 RCE – Microsoft Office (CVE-2025-54910), Windows Graphics Component (CVE-2025-55228), NTFS (CVE-2025-54916), SharePoint (CVE-2025-54897), Microsoft HPC Pack (CVE-2025-55232), Hyper-V (CVE-2025-55224), Graphics Kernel (CVE-2025-55226, CVE-2025-55236)
🔹 EoP – Windows NTLM (CVE-2025-54918), Windows Kernel (CVE-2025-54110), Windows SMB (CVE-2025-55234), Windows TCP/IP Driver (CVE-2025-54093), Hyper-V (CVE-2025-54091, CVE-2025-54092, CVE-2025-54098, CVE-2025-54115)

🗒 Full Vulristics report

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August Microsoft Patch Tuesday

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August Microsoft Patch Tuesday

August Microsoft Patch Tuesday. A total of 132 vulnerabilities, 20 fewer than in July. Of these, 25 were added between the July and August MSPT. Three are actively exploited, including two related to the trending SharePoint “ToolShell” flaw, exploited since July 17.

🔻 RCE – Microsoft SharePoint Server (CVE-2025-53770)
🔻 Spoofing – Microsoft SharePoint Server (CVE-2025-53771)

Another actively exploited vulnerability affects Chromium:

🔻SFB – Chromium (CVE-2025-6558)

Notable among the rest, without public exploits or exploitation signs, are:

🔹 RCE – SharePoint (CVE-2025-49712), GDI+ (CVE-2025-53766), Windows Graphics Component (CVE-2025-50165), DirectX Graphics Kernel (CVE-2025-50176), Microsoft Office (CVE-2025-53731, CVE-2025-53740), MSMQ (CVE-2025-53144, CVE-2025-53145, CVE-2025-50177)
🔹 EoP – Kerberos (CVE-2025-53779), NTLM (CVE-2025-53778)

🗒 Full Vulristics report

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August “In the Trend of VM” (#18): vulnerabilities in Microsoft Windows and SharePoint

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August In the Trend of VM (#18): vulnerabilities in Microsoft Windows and SharePoint

August “In the Trend of VM” (#18): vulnerabilities in Microsoft Windows and SharePoint. A traditional monthly roundup – this time, it’s extremely short.

🗞 Post on Habr (rus)
🗒 Digest on the PT website (rus)

Only two trending vulnerabilities:

🔻 Remote Code Execution – Microsoft SharePoint Server “ToolShell” (CVE-2025-53770). The vulnerability is being widely exploited; attackers may even have gained access to U.S. nuclear secrets. The vulnerability is also relevant for Russia.
🔻 Elevation of Privilege – Windows Update Service (CVE-2025-48799). The vulnerability affects Windows 10/11 installations with at least two hard drives.

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