elevated privileges

Winsage
December 17, 2025
Microsoft has identified a significant out-of-bounds vulnerability (CVE-2025-55681) in the Desktop Window Manager (DWM) that allows local attackers to escalate privileges to SYSTEM on affected Windows systems. This vulnerability is found in the dwmcore.dll component and affects all versions of Windows 10, Windows 11, and various Windows Server editions (2016, 2019, 2022, and 2025). The flaw originates from the CBrushRenderingGraphBuilder::AddEffectBrush function, enabling attackers with local access to exploit improper buffer handling without user interaction. The vulnerability has a CVSS v3.1 score of 7.8, indicating high severity. Microsoft has released security patches, and organizations are advised to apply them promptly while implementing strict access controls until the patches are installed.
Winsage
December 11, 2025
A vulnerability in the Windows Defender Firewall Service, designated as CVE-2025-62468, was disclosed on December 9, 2025, and has an Important severity rating. It results from an out-of-bounds read condition, allowing an authorized attacker with elevated privileges to access sensitive heap memory without user interaction. The vulnerability has a CVSS v3.1 base score of 4.4, indicating moderate severity, and is characterized by a local attack vector, low attack complexity, high privileges required, and no user interaction needed. Microsoft assessed the likelihood of exploitation as unlikely and has released security updates for affected products, including Windows Server 2025 and various versions of Windows 11. The vulnerability primarily affects organizations with strict access controls and monitoring protocols. Security researchers from Kunlun Lab are credited with responsibly disclosing this vulnerability.
Winsage
October 28, 2025
On October 14, 2025, a critical remote code execution (RCE) vulnerability, CVE-2025-59287, was discovered in Microsoft's Windows Server Update Services (WSUS). The vulnerability allows remote, unauthenticated attackers to execute arbitrary code with system privileges on affected servers. It was initially addressed on October 14, but the patch was insufficient, leading to an urgent out-of-band update on October 23. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added the vulnerability to its Known Exploited Vulnerabilities Catalog on October 24, indicating its immediate threat. The vulnerability affects Microsoft Windows Server 2012, 2012 R2, 2016, 2019, 2022, and 2025, specifically on servers with the WSUS role enabled. Attackers are exploiting the vulnerability by targeting publicly exposed WSUS instances on TCP ports 8530 (HTTP) and 8531 (HTTPS). Approximately 5,500 WSUS instances have been identified as exposed to the internet. Microsoft recommends disabling the WSUS Server Role or blocking inbound traffic to the high-risk ports as temporary workarounds for organizations unable to apply the emergency patches immediately.
Winsage
October 28, 2025
The Cybersecurity and Infrastructure Security Agency (CISA) has mandated U.S. government agencies to address a critical vulnerability in Windows Server Update Services (WSUS), identified as CVE-2025-59287, which allows for remote code execution (RCE) on affected servers. Microsoft has released out-of-band security updates for this vulnerability, and IT administrators are urged to implement these updates immediately. For those unable to do so, CISA recommends disabling the WSUS Server role on vulnerable systems. Active exploitation attempts targeting WSUS instances have been detected, and CISA has also added a second vulnerability affecting Adobe Commerce to its Known Exploited Vulnerabilities catalog. U.S. Federal Civilian Executive Branch agencies are required to patch their systems by November 14th, 2023, under the Binding Operational Directive 22-01. CISA emphasizes the need for organizations to address these vulnerabilities to mitigate risks of unauthorized remote code execution.
Winsage
October 21, 2025
Microsoft Windows users are facing a significant security vulnerability affecting nearly 200 Common Vulnerabilities and Exposures (CVEs), which has drawn attention from the Cybersecurity and Infrastructure Security Agency (CISA). CISA has issued a warning about a high-severity Windows SMB privilege escalation vulnerability (CVE-2025-33073) that affects Windows Server, 10, and 11, and is already being exploited. CISA has mandated that specific Federal Civilian Executive Branch agencies update their systems within 14 days and has urged all organizations to prioritize timely remediation. CVE-2025-33073 allows an authorized attacker to gain elevated privileges over a network and was initially identified in the June rollout. CISA emphasizes the need for immediate updates to mitigate exposure to potential cyberattacks.
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