SharePoint
Microsoft fixes “BadSuccessor” Kerberos vulnerability (CVE-2025-53779)
For August 2025 Patch Tuesday, Microsoft has released security updates resolving 100+ security vulnerabilities in its various solutions, including a relative path traversal …
August 2025 Patch Tuesday forecast: Try, try again
July turned into a surprisingly busy month. It started slowly with a fairly ‘calm’ Patch Tuesday as I forecasted in my last blog. Although there were 130 new CVEs addressed …
Storm-2603 spotted deploying ransomware on exploited SharePoint servers
One of the groups that, in the past few weeks, has been exploiting vulnerabilities in on-prem SharePoint installation has been observed deploying Warlock ransomware, Microsoft …
Microsoft pins on-prem SharePoint attacks on Chinese threat actors
This is a developing story, new update here: Storm-2603 spotted deploying ransomware on exploited SharePoint servers As Microsoft continues to update its customer guidance for …
Microsoft SharePoint servers under attack via zero-day vulnerability (CVE-2025-53770)
This is a developing story, new update here: Microsoft pins on-prem SharePoint attacks on Chinese threat actors Attackers are exploiting a zero-day variant (CVE-2025-53770) of …
Microsoft fixes critical wormable Windows flaw (CVE-2025-47981)
For July 2025 Patch Tuesday, Microsoft has released patches for 130 vulnerabilities, among them one that’s publicly disclosed (CVE-2025-49719) and a wormable RCE bug on …
Patch Tuesday: Microsoft fixes 5 actively exploited zero-days
On May 2025 Patch Tuesday, Microsoft has released security fixes for 70+ vulnerabilities, among them five actively exploited zero-days and two publicly disclosed (but not …
Exploited: Cisco, SharePoint, Chrome vulnerabilities
Threat actors have been leveraging zero and n-day vulnerabilities in Cisco security appliances (CVE-2024-20481), Microsoft Sharepoint (CVE-2024-38094), and Google’s …
Microsoft fixes 4 exploited zero-days and a code defect that nixed earlier security fixes
September 2024 Patch Tuesday is here and Microsoft has delivered 79 fixes, including those for a handful of zero-days (CVE-2024-38217, CVE-2024-38226, CVE-2024-38014, …
May 2024 Patch Tuesday: Microsoft fixes exploited zero-days (CVE-2024-30051, CVE-2024-30040)
For May 2024 Patch Tuesday, Microsoft has released fixes for 59 CVE-numbered vulnerabilities, including two zero-days (CVE-2024-30051, CVE-2024-30040) actively exploited by …
New covert SharePoint data exfiltration techniques revealed
Varonis Threat Labs researchers have uncovered two techniques attackers can use can use for covert data and file exfiltration from companies’ SharePoint server. …
Microsoft fixes critical flaws in Windows Kerberos, Hyper-V (CVE-2024-20674, CVE-2024-20700)
For January 2024 Patch Tuesday, Microsoft has released fixes for 49 CVE-numbered vulnerabilities, two of which are critical: CVE-2024-20674 and CVE-2024-20700. None of the …
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