Microsoft
-
Microsoft to block unauthorized scripts on Entra ID sign-ins with CSP update
Microsoft will change the Content Security Policy for browser-based Entra ID sign-ins at login.microsoftonline.com to block unauthorized scripts and allow only trusted Microsoft domains, with a global rollout beginning mid-to-late October 2026; organisations are asked to test sign-in flows and avoid tools that inject code.
-
Microsoft issues out-of-band fix for WSUS vulnerability CVE-2025-59287
Microsoft released an out-of-band cumulative update to address CVE-2025-59287, a critical WSUS deserialization vulnerability being exploited in the wild; admins should apply the patch or disable WSUS/block ports 8530 and 8531 until systems can be rebooted after updating.
-
CISA says Windows SMB privilege-escalation bug CVE-2025-33073 is being exploited
CISA warned that threat actors are actively exploiting CVE-2025-33073, a high-severity SMB privilege-escalation bug affecting Windows Server, Windows 10 and Windows 11 up to 24H2. Microsoft patched the flaw in June 2025 and attributed discovery to multiple researchers, while CISA added the vulnerability to its Known Exploited Vulnerabilities Catalog and set a Nov. 10 deadline…
-
Foreign intruders accessed Kansas City weapons plant IT via SharePoint flaws, source says
A source familiar with an August response says a foreign actor exploited unpatched Microsoft SharePoint flaws to access the Kansas City National Security Campus IT network. Investigations are ongoing, attribution is disputed between Chinese-linked groups and possible Russian actors, and experts warn the incident highlights gaps between IT and operational technology security.
-
Microsoft revokes more than 200 certificates used in fake Teams ransomware campaign
Microsoft said it revoked over 200 code signing certificates used by a group tracked as Vanilla Tempest to sign fake Microsoft Teams installers that delivered the Oyster backdoor and Rhysida ransomware; the company said it detected the activity in late September 2025 and has updated protections to flag the malicious signatures.
-
Microsoft tightens Edge’s Internet Explorer mode after reports of exploit chain
Microsoft said it has tightened Internet Explorer mode in Edge after reports that attackers used social engineering and unpatched Chakra 0-day exploits to gain remote code execution and escalate privileges, and the company removed easier IE mode launch options and now requires explicit enabling.
-
Microsoft links Storm-1175 to zero-day exploitation of GoAnywhere MFT
Microsoft said the criminal group Storm-1175 exploited a zero-day in Fortra’s GoAnywhere MFT to gain remote code execution, deploy monitoring tools, steal data with Rclone and install Medusa ransomware, with activity observed as early as Sept. 11; CISA and other researchers have also reported active exploitation.
-
US Air Force investigating ‘privacy-related issue’ after alleged SharePoint notice
The Department of the Air Force is investigating a “privacy-related issue” after an alleged notice said USAF SharePoint permissions exposed PII and PHI and that SharePoint, Teams and Power BI might be blocked; officials have provided limited confirmation and Microsoft declined to comment.
-
Wyden urges FTC to probe Microsoft over alleged ‘gross cybersecurity negligence’ linked to ransomware attacks, citing Ascension breach
U.S. Senator Ron Wyden has urged the FTC to investigate Microsoft, accusing the company of cybersecurity negligence linked to ransomware attacks on critical infrastructure, including a major Ascension health-system breach that affected millions of people.
-
Microsoft restricts Chinese firms’ access to vulnerability warnings amid SharePoint attacks
Microsoft has restricted certain Chinese firms from its vulnerability early warning program after concerns that data could be linked to a wave of SharePoint server attacks, sparking debate over governance and the global sharing of threat intelligence.
