security researchers

Winsage
September 10, 2026
On September 8, 2026, Microsoft released 966 security updates, the largest Patch Tuesday to date, addressing various vulnerabilities. Among these, 105 were classified as critical, including two zero-day vulnerabilities: CVE-2026-81963 and CVE-2026-85880. Both allow authorized local attackers to escalate privileges to SYSTEM level. CVE-2026-81963 is related to the Windows Update Stack, while CVE-2026-85880 involves a heap-based buffer overflow in the Windows Advanced Local Procedure Call (ALPC). The updates included 438 vulnerabilities related to privilege escalation, 258 concerning remote code execution, and 173 involving information disclosures. Users are advised to prioritize the installation of these updates due to the potential exploitation of the two critical vulnerabilities.
Winsage
September 10, 2026
Microsoft's Patch Tuesday on September 8, 2026, addressed two critical Windows privilege escalation vulnerabilities: CVE-2026-85880 and CVE-2026-81963, both with a CVSS score of 7.8. CVE-2026-85880 is a heap-based buffer overflow in the Windows Advanced Local Procedure Call (ALPC), allowing attackers with low-privilege local access to escalate privileges to SYSTEM. CVE-2026-81963 involves improper link resolution in the Windows Update Stack, enabling similar privilege escalation. Both vulnerabilities require no user interaction and have been actively exploited prior to the patch release. CISA added them to its Known Exploited Vulnerabilities catalog on September 8, 2026, with a remediation deadline of September 22 for U.S. federal agencies. CVE-2026-85880 affects various Windows 10 and Server versions but excludes Windows 11 and Windows Server 2025. CVE-2026-81963 impacts newer Windows platforms, including Windows 11 and Windows Server 2025. Microsoft released security updates for both vulnerabilities on September 8, 2026, and organizations are advised to prioritize these updates. Security teams should monitor for signs of privilege escalation and unusual SYSTEM-level activities related to these vulnerabilities.
Winsage
September 1, 2026
Security researchers at Microsoft have identified a campaign named "TerminalFix" that exploits compromised websites to trick users into installing a backdoor. Users visiting these sites encounter a deceptive overlay prompting them to complete a fake Cloudflare CAPTCHA, which requires executing a malicious PowerShell command. This leads victims to inadvertently sideload dynamic link libraries (DLLs) and deploy a Python implant that creates encrypted reverse tunnels, allowing attackers to access internal networks.
Winsage
August 13, 2026
A vulnerability in Microsoft Defender, named ShieldBreak, has been revealed by security researcher Nightmare Eclipse, allowing malicious actors to gain complete system-level access to a user's device. Microsoft has previously warned against public disclosure of vulnerabilities and suggested potential legal repercussions for researchers who do so outside its protocols. Users of Microsoft Defender are advised to remain vigilant regarding this vulnerability.
Winsage
August 12, 2026
A security researcher named Nightmare Eclipse has discovered a vulnerability in Windows, called ShieldBreak, which allows hackers to gain system-wide access to users' devices and sensitive data by exploiting a flaw in Windows Defender. The vulnerability affects Windows 10, Windows 11 (including version 25H2), and Windows Server 2025. A proof-of-concept exploit has been provided, requiring users to run a Windows application to trigger the vulnerability. Security researcher Will Dormann confirmed that Windows Defender must be enabled for the exploit to work. Microsoft has not yet released a patch for ShieldBreak, which is classified as a zero-day vulnerability. This discovery follows previous vulnerabilities disclosed by Nightmare Eclipse, including RoguePlanet, for which Microsoft issued an inadequate patch. The situation has heightened tensions between the researcher and Microsoft regarding the handling of bug reports, especially after Microsoft threatened legal action against researchers disclosing zero-days outside established protocols. The disclosure of ShieldBreak occurred shortly after Microsoft's monthly security patch releases, which have been increasing in number.
Winsage
August 7, 2026
Security researchers from Huntress discovered a sophisticated SQL Injection (SQLi) attack that led to the deployment of a rare toolkit called Khunt. The attackers exploited a public-facing application backed by an Oracle database by failing to validate user input, allowing malicious SQL commands to be executed. The Khunt toolkit enabled activities such as executing operating system commands, stealing credentials, and exfiltrating registry hive data. Experts recommend robust defense mechanisms, including input sanitation, regular security audits, and the implementation of web application firewalls to protect against such attacks.
AppWizard
August 5, 2026
Recent research from the Electronic Frontier Foundation (EFF) has revealed that millions of Android users' location data are being inadvertently exposed to advertisers through third-party code libraries. This occurs when seemingly harmless applications, like weather services and fitness trackers, integrate third-party SDKs that collect user location information automatically upon permission approval, often without developers' awareness. Data brokers aggregate this location information to create detailed movement profiles sold to advertisers and government agencies. Despite privacy regulations like GDPR and CCPA, enforcement is inconsistent, and developers may claim ignorance regarding data practices they did not implement. Google has improved Android's privacy controls, but visibility into third-party libraries accessing data remains limited. Developers face challenges in auditing third-party code due to resource constraints, leading to a complex landscape where user information traverses multiple entities without clear accountability. Privacy advocates are calling for new technical standards to require SDKs to disclose their data practices.
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