Tag: microsoft
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Microsoft Rushes Emergency Patch for Actively Exploited SharePoint ‘ToolShell’ Bug
Malicious actors already have already pounced on the zero-day vulnerability, tracked as CVE-2025-53770, to compromise US government agencies and other businesses in ongoing and widespread attacks. First seen on darkreading.com Jump to article: www.darkreading.com/remote-workforce/microsoft-rushes-emergency-fix-exploited-sharepoint-toolshell-flaw
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New zero-day bug in Microsoft SharePoint under widespread attack
Security researchers say Microsoft customers should take immediate action to defend against the ongoing cyberattacks, and must assume they have already been compromised. First seen on techcrunch.com Jump to article: techcrunch.com/2025/07/21/new-zero-day-bug-in-microsoft-sharepoint-under-widespread-attack/
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U.S. CISA urges to immediately patch Microsoft SharePoint flaw adding it to its Known Exploited Vulnerabilities catalog
Tags: cisa, cve, cybersecurity, exploit, flaw, infrastructure, kev, microsoft, update, vulnerability, zero-dayU.S. Cybersecurity and Infrastructure Security Agency (CISA) adds Microsoft SharePoint flaw to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added Microsoft SharePoint flaw, tracked as CVE-2025-53770 (“ToolShell”) (CVSS score of 9.8), to its Known Exploited Vulnerabilities (KEV) catalog. This week, Microsoft released emergency SharePoint updates for two zero-day flaws, tracked as CVE-2025-53770 and CVE-2025-53771,…
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Microsoft Confirms Hackers Exploiting SharePoint Flaws, Patch Now
Microsoft has released new security updates to fix two serious vulnerabilities affecting on-premises SharePoint servers, warning that attackers… First seen on hackread.com Jump to article: hackread.com/microsoft-hackers-exploit-sharepoint-flaws-patch-now/
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Attackers Exploit Zero-Day Flaws in On-Premises SharePoint
Microsoft Issuing Emergency Patches to Combat Authentication-Bypassing Attacks. Hackers have been exploiting two zero-day vulnerabilities in on-premises installations of Microsoft SharePoint to gain remote access, and steal cryptographic keys and data. As Microsoft rolls out patches against ToolShell, experts warn administrators to also rotate keys, to help eject attackers. First seen on govinfosecurity.com Jump to…
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Warnings issued as hackers actively exploit critical zero-day in Microsoft SharePoint
Microsoft has issued an urgent patch for most SharePoint servers after cybersecurity researchers found threat actors globally exploiting a zero-day vulnerability in the products. First seen on therecord.media Jump to article: therecord.media/microsoft-sharepoint-zero-day-vulnerability-exploited-globally
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Microsoft issues emergency patches for SharePoint zero-days exploited in >>ToolShell<< attacks
Microsoft patched an exploited SharePoint flaw (CVE-2025-53770) and disclosed a new one, warning of ongoing attacks on on-prem servers. Microsoft released emergency SharePoint updates for two zero-day flaws, tracked as CVE-2025-53770 and CVE-2025-53771, exploited since July 18 in attacks dubbed >>ToolShell.
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Microsoft SharePoint servers under attack via zero-day vulnerability (CVE-2025-53770)
Attackers are exploiting a zero-day variant (CVE-2025-53770) of a SharePoint remote code execution vulnerability (CVE-2025-49706) that Microsoft patched earlier this month, … First seen on helpnetsecurity.com Jump to article: www.helpnetsecurity.com/2025/07/20/microsoft-sharepoint-servers-under-attack-via-zero-day-vulnerability-with-no-patch-cve-2025-53770/
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Attackers Actively Compromising On-Prem SharePoint Customers
On-prem SharePoint customers have been told to assume compromise, with attackers observed to be exfiltrating data from victim servers across critical sectors First seen on infosecurity-magazine.com Jump to article: www.infosecurity-magazine.com/news/microsoft-compromising-sharepoint/
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Microsoft AppLocker Flaw Lets Malicious Apps Bypass Security Restrictions
Security researchers at Varonis Threat Labs have identified a subtle but significant vulnerability in Microsoft’s AppLocker security feature that could allow malicious applications to bypass established security restrictions. While not classified as a critical vulnerability, the discovery highlights important gaps in enterprise security configurations that organizations should address. AppLocker serves as Microsoft’s enterprise-grade application control…
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Hacker greifen über Microsoft-Lücke an
Über eine Sicherheitslücke in SharePoint haben Hacker zahlreiche Behörden und Unternehmen angegriffen. IT-Sicherheitsexperten schlagen Alarm, weil Behörden und Unternehmen über eine neu entdeckte Schwachstelle in Software von Microsoft angegriffen werden. Betroffen sind demnach lokale Server für das Programm SharePoint zum Teilen von Dateien. Über die Schwachstelle seien Angreifer bereits in Systeme “Dutzender” Organisationen eingedrungen, sowohl in…
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CVE-2025-53770: Critical SharePoint Flaws Actively Exploited in the Wild
Microsoft has released emergency security updates to address a critical vulnerability in its on-premises SharePoint Server, warning that the flaw is currently being exploited in the wild. The tech company also disclosed a second, related vulnerability. CVE-2025-53770 Critical Flaw Enables… First seen on sensorstechforum.com Jump to article: sensorstechforum.com/cve-2025-53770-sharepoint-flaws-exploited/
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SharePoint zero-day CVE-2025-53770 actively exploited in the wild
Microsoft warns of ongoing active exploitation of a SharePoint zero-day vulnerability, tracked as CVE-2025-53770. Microsoft warns of a SharePoint zero-day vulnerability, tracked as CVE-2025-53770 (CVSS score of 9.8), which is under active exploitation. Unfortunately, the flaw has yet to be addressed. The vulnerability is a deserialization of untrusted data in on-premises Microsoft SharePoint Server, an…
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CISA Issues Alert on Microsoft SharePoint 0-Day RCE Exploited in Attacks
Tags: attack, cisa, cve, cyber, cybersecurity, data, exploit, flaw, infrastructure, microsoft, rce, remote-code-execution, threat, vulnerability, zero-dayThe Cybersecurity and Infrastructure Security Agency (CISA) has issued an urgent security alert regarding a critical zero-day vulnerability in Microsoft SharePoint Server that is being actively exploited in cyberattacks. The vulnerability, tracked as CVE-2025-53770, represents a significant threat to organizations running on-premises SharePoint installations. The flaw stems from a deserialization of untrusted data vulnerability within…
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Zero-Day-Lücke: Hacker attackieren massenhaft Microsoft-Sharepoint-Instanzen
Wer einen Sharepoint-Server betreibt, sollte dringend handeln. Hacker hebeln derzeit aktiv einen Patch für eine kritische Sicherheitslücke aus. First seen on golem.de Jump to article: www.golem.de/news/zero-day-luecke-hacker-attackieren-massenhaft-microsoft-sharepoint-instanzen-2507-198299.html
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Microsoft releases emergency patches for SharePoint RCE flaws exploited in attacks
Microsoft has released emergency SharePoint security updates for two zero-day vulnerabilities tracked as CVE-2025-53770 and CVE-2025-53771 that have compromised services worldwide in “ToolShell” attacks. First seen on bleepingcomputer.com Jump to article: www.bleepingcomputer.com/news/microsoft/microsoft-releases-emergency-patches-for-sharepoint-rce-flaws-exploited-in-attacks/
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Microsoft Releases Urgent Patch for SharePoint RCE Flaw Exploited in Ongoing Cyber Attacks
Microsoft on Sunday released security patches for an actively exploited security flaw in SharePoint and also released details of another vulnerability that it said has been addressed with “more robust protections.”The tech giant acknowledged it’s “aware of active attacks targeting on-premises SharePoint Server customers by exploiting vulnerabilities partially addressed by the July Security First seen…
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Microsoft SharePoint servers under attack via zero-day vulnerability with no patch (CVE-2025-53770)
Attackers are exploiting a zero-day variant (CVE-2025-53770) of a SharePoint remote code execution vulnerability (CVE-2025-49706) that Microsoft patched earlier this month, … First seen on helpnetsecurity.com Jump to article: www.helpnetsecurity.com/2025/07/20/microsoft-sharepoint-servers-under-attack-via-zero-day-vulnerability-with-no-patch-cve-2025-53770/
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Microsoft SharePoint zero-day exploited in RCE attacks, no patch available
A critical zero-day vulnerability in Microsoft SharePoint, tracked as CVE-2025-53770, has been actively exploited since at least July 18th, with no patch available and at least 85 servers already compromised worldwide. First seen on bleepingcomputer.com Jump to article: www.bleepingcomputer.com/news/microsoft/microsoft-sharepoint-zero-day-exploited-in-rce-attacks-no-patch-available/
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Critical Unpatched SharePoint Zero-Day Actively Exploited, Breaches 75+ Company Servers
A critical security vulnerability in Microsoft SharePoint Server has been weaponized as part of an “active, large-scale” exploitation campaign.The zero-day flaw, tracked as CVE-2025-53770 (CVSS score: 9.8), has been described as a variant of CVE-2025-49706 (CVSS score: 6.3), a spoofing bug in Microsoft SharePoint Server that was addressed by the tech giant as part of…
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UK uncovers novel Microsoft snooping malware, blames and sanctions GRU cyberspies
Fancy Bear can’t keep its claws out of Outlook inboxes First seen on theregister.com Jump to article: www.theregister.com/2025/07/20/uk_microsoft_snooping_russia/
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Critical Unpatched SharePoint Zero-Day Actively Exploited, Breaches 75+ Global Organizations
A critical security vulnerability in Microsoft SharePoint Server has been weaponized as part of an “active, large-scale” exploitation campaign.The zero-day flaw, tracked as CVE-2025-53770 (CVSS score: 9.8), has been described as a variant of CVE-2025-49706 (CVSS score: 6.3), a spoofing bug in Microsoft SharePoint Server that was addressed by the tech giant as part of…
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Microsoft says it will no longer use engineers in China for Department of Defense work
Following a Pro Publica report that Microsoft was using engineers in China to help maintain cloud computing systems for the U.S. Department of Defense, the company said it’s made changes to ensure this will no longer happen. First seen on techcrunch.com Jump to article: techcrunch.com/2025/07/19/microsoft-says-it-will-no-longer-use-engineers-in-china-for-department-of-defense-work/
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Microsoft beendet die Cloud-Wartung des US-Verteidigungsministeriums durch chinesische Software-Ingenieure
Das ging irgendwie schnell, nachdem Microsoft quasi “mit dem Finger im Honigtopf” erwischt wurde. Eine Woche nach der Meldung von ProPublica sagt Microsoft dass man keinen Ingenieure mehr in China einsetzt, um die Cloud-Systeme des US-Verteidigungsministeriums (DoD) zu warten. Rückblick: … First seen on borncity.com Jump to article: www.borncity.com/blog/2025/07/19/microsoft-beendet-die-cloud-wartung-des-us-verteidigungsministeriums-durch-chinesische-software-ingenieure/
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UK ties GRU to stealthy Microsoft 365 credential-stealing malware
The UK National Cyber Security Centre (NCSC) has formally attributed ‘Authentic Antics’ espionage malware attacks to APT28 (Fancy Bear), threat actor already linked to Russia’s military intelligence service (GRU). First seen on bleepingcomputer.com Jump to article: www.bleepingcomputer.com/news/security/uk-ties-russian-gru-to-authentic-antics-credential-stealing-malware/
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Microsoft mistakenly tags Windows Firewall error log bug as fixed
Microsoft has mistakenly tagged an ongoing Windows Firewall error message bug as fixed in recent updates, stating that they are still working on a resolution. First seen on bleepingcomputer.com Jump to article: www.bleepingcomputer.com/news/microsoft/microsoft-mistakenly-tags-windows-firewall-error-log-bug-as-fixed/
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Top US senator calls out supply-chain risk with DoD contractors
The Senate Intelligence Committee chairman questioned the security of Microsoft’s “digital escort” arrangement with its Chinese employees. First seen on cybersecuritydive.com Jump to article: www.cybersecuritydive.com/news/microsoft-china-employees-us-military-senate-letter/753465/
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Russia Linked to New Malware Targeting Email Accounts for Espionage
Russian military intelligence-linked hackers are using a new malware called “Authentic Antics” to secretly access Microsoft cloud email accounts, the UK’s NCSC reports First seen on infosecurity-magazine.com Jump to article: www.infosecurity-magazine.com/news/new-malware-targeting-email/
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Fehlinterpretation der Verantwortlichkeiten führt zu Backup-Lücke in Microsoft-365
Unternehmen nutzen Microsoft-365 als Grundlage für ihre Produktivität. Doch neben den Vorteilen solcher Produktivitätsplattformen wird immer wieder eine Lücke in der Datenschutzstrategie übersehen: das Prinzip der geteilten Verantwortung. Diese Nachlässigkeit setzt wichtige Geschäftsinformationen erheblichen Risiken aus, die sich in Ausfallzeiten und wirtschaftlichen Verlusten niederschlagen können. Ein Risiko bei der Nutzung von Microsoft-365 besteht dann, wenn…