Microsoft 365 makes sharing files easy, but access can remain long after its original purpose has ended, leaving organizations with little visibility into who can still reach sensitive data. tenfold Software explains how centralized access governance and owner-driven reviews can help identify and remove unnecessary access. [...]
Microsoft Teams will soon let administrators tweak the list of file extensions commonly associated with security threats to meet their company's security requirements. [...]
Microsoft has resolved a known issue that causes incorrect alerts warning that Defender Antivirus was turned off after installing recent updates. [...]
AI has already made fundamental changes to the operating environment for cybersecurity. Cyberattackers are testing more paths, adapting their techniques, and moving across digital environments with greater speed and persistence. The weaknesses they exploit remain familiar: excessive permissions, unprotected authentication flows, unpatched systems, exposed execution paths, and gaps between controls. What has changed is how quickly these weaknesses can combine into attack paths that cross…
Every benchmark tells a story. The most valuable ones tell us where to improve next. For five consecutive quarters Microsoft has published email security benchmarking reports to provide greater transparency into real-world protection outcomes. The results have shown strong Microsoft Defender performance across pre-delivery and post-delivery scenarios, while revealing where threats and defenses continue to evolve. This quarter’s benchmark examines how continuous measurement informs protection…
Improper neutralization of special elements used in a command ('command injection') in Microsoft 365 Copilot's Business Chat allows an unauthorized attacker to disclose information over a network.
Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an authorized attacker to elevate privileges over a network.
Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an unauthorized attacker to disclose information over a network.
Over the past year, our Global Emergency Response Team (GERT) has investigated several incidents involving the NightEagle group (APT-Q-95). This group has been active since at least 2023 and originally focused on organizations in Asia, as we reported previously. We have now identified attacks by the group targeting businesses in Russia. This post examines both known and new tools NightEagle used in its latest campaign. Initial access In most incidents, the attackers used compromised valid…
This vulnerability allows local attackers to escalate privileges on affected installations of Microsoft Windows. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 5.3.
De multiples vulnérabilités ont été découvertes dans Microsoft Edge. Elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance et une élévation de privilèges.
Executive Summary Microsoft’s September 2026 security updates, KB5124008 and KB5124012, have been linked to USB audio failures on some Windows systems, highlighting the operational risk that can accompany security patching. Qualys TruRisk Eliminate classified both updates as Low Reliability, signaling the need for additional validation before production deployment. Patch Reliability helps IT and security teams focus on deeper testing where needed while allowing high-confidence patches to move…
De multiples vulnérabilités ont été découvertes dans Microsoft Edge. Elles permettent à un attaquant de provoquer une élévation de privilèges et un problème de sécurité non spécifié par l'éditeur.
Upozorňujeme na phishingovou kampaň zneužívající autentizační mechanismus Device Code Flow. Útočník pod záminkou připojení ke schůzce nebo videohovoru přes legitimní nástroje přiměje uživatele k autorizaci a přes kontrolovanou relaci dochází ke krádeži přístupového tokenu a následné kompromitaci uživatele.Device Code FlowDevice Code Flow je autentizační mechanismus navržený pro případy, kdy se uživatel přihlašuje na zařízení s omezenými možnostmi zadávání přihlašovacích údajů, například na…
For the latest discoveries in cyber research for the week of 14th Setpember, please download our Threat Intelligence Bulletin. TOP ATTACKS AND BREACHES IDScan.net, a US identity verification provider, has disclosed a data breach after detecting unauthorized access on September 1. Exposed data included names and government identification numbers, while a criminal marketplace advertised a collection containing millions of identity documents, including driver’s licenses, associated with the…
Elastic Security Labs has tracked REF9334, a Brazilian banking malware operation, since May 2025. Its toolkit is called KREMLIN (as named by the malware author, Kr3mlin4rt1st), though nothing about the operation is Russian. Lures impersonate twelve Brazilian banks; error messages and code comments are written in Portuguese, and the operators' Ethereum transactions cluster during São Paulo working hours. Over 15 months and seven campaigns, they built a malicious browser extension that installs…
De multiples vulnérabilités ont été découvertes dans Microsoft Edge. Elles permettent à un attaquant de provoquer un contournement de la politique de sécurité et un problème de sécurité non spécifié par l'éditeur. Microsoft indique que la vulnérabilité CVE-2026-87491 est activement exploitée.
Researchers analyzed a flood of fraudulent business emails and found that the threat actors had doubled-up on tactics to make them appear legitimate, including help from AI.
Microsoft says threat actors linked to ShinyHunters, Helix, and other extortion gangs are using passkey and single sign-on-themed social engineering attacks to compromise corporate Microsoft accounts and steal data from Microsoft 365 services. [...]
Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Edge (Chromium-based) allows an authorized attacker to elevate privileges locally.
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
Every wave of technology excitement creates a new opportunity for cyberattackers, and AI is no exception. Microsoft Threat Intelligence has published research showing a growing set of campaigns that impersonate popular AI platforms and tools, including ChatGPT, Microsoft Copilot, DeepSeek, and Claude.1 The goal is to make phishing, search-driven malware campaigns, and malvertising—which is malicious advertising that uses online ads to lure users to harmful sites, downloads, or redirect…
BlueMoon, a shared Chrome and Windows exploit kit, shows why “patch later” is becoming a dangerous gamble. Security updates are easy to put off. The browser still opens, Windows still works, and choosing to relaunch your browser or restart your computer later can feel harmless. But a newly documented exploit kit called “BlueMoon” shows how quickly patching delays can become dangerous. Proofpoint Researchers found four espionage groups using the same exploit chain against Chrome browsers running…
Multiple cyber-espionage groups deployed an exploit kit dubbed "BlueMoon" that leveraged zero-day vulnerabilities in Microsoft Windows and Google Chrome. [...]
Une vulnérabilité a été découverte dans Microsoft Edge. Elle permet à un attaquant de provoquer une exécution de code arbitraire à distance. Microsoft indique que la vulnérabilité CVE-2026-85046 est activement exploitée.
In this article OverviewTechnique CatalogPrivilege EscalationMitigation and protection guidanceReferencesLearn more Microsoft introduces the cloud web applications threat matrix, a MITRE ATT&CK-aligned framework that helps defenders understand, prioritize, and mitigate threats to cloud-hosted web apps and serverless platforms. Cloud-hosted web applications and serverless platforms create attack paths that can cross application code, managed runtimes, workload identities, deployment pipelines,…
In this article Attack chain overviewAttributionMitigation and protection guidanceLearn more Microsoft Security Research is tracking active cloud-based intrusions spanning multiple accounts in which unusual sign-ins were followed by threat actor-added authentication methods, high-volume Microsoft Graph activity, SharePoint and OneDrive downloads, and email collection through REST APIs. Microsoft Security Research assesses that this sequence is consistent with automated collection from…
Microsoft’s September 2026 Patch Tuesday addresses 964 CVEs, including 104 rated Critical and 860 rated Important, making it the company’s largest Patch Tuesday release on record. Microsoft lists 974 CVEs in its full September security release. However, 10 of those affect cloud services or involve fixes that Microsoft applies itself, leaving 964 vulnerabilities that customers need to patch. The release includes fixes for two actively exploited Windows zero-days. Both are local elevation-of…
An anonymous security researcher known as Nightmare Eclipse has released a new Microsoft Defender zero-day exploit named "ShieldCrash" right after Microsoft rolled out its September 2026 Patch Tuesday security updates. [...]
A Nemzetbiztonsági Szakszolgálat Nemzeti Kiberbiztonsági Intézet riasztást ad ki a Microsoft szoftvereket érintő kritikus kockázati besorolású sérülékenységek kapcsán azok súlyossága, a szoftverek széleskörű elterjedtsége, valamint az egyes biztonsági hibákat érintő aktív kihasználások miatt. A Microsoft tárgyhavi biztonsági csomagjában összesen 974 különböző biztonsági hibát javított, köztük 2 db nulladik napi (zero-day) sebezhetőséget is, amelyet a Microsoft […]
This vulnerability allows remote attackers to disclose sensitive information on affected installations of Microsoft Azure. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 5.8.
De multiples vulnérabilités ont été découvertes dans les produits Microsoft. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, une élévation de privilèges et un déni de service à distance.
De multiples vulnérabilités ont été découvertes dans Microsoft Azure. Elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, une élévation de privilèges et une atteinte à la confidentialité des données.
De multiples vulnérabilités ont été découvertes dans Microsoft Windows. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, une élévation de privilèges et un déni de service à distance. Microsoft indique que les vulnérabilités CVE-2026-81963...
De multiples vulnérabilités ont été découvertes dans Microsoft .Net. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, une élévation de privilèges et un déni de service à distance.
De multiples vulnérabilités ont été découvertes dans Microsoft Office. Elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, une atteinte à la confidentialité des données et un contournement de la politique de sécurité.
Microsoft has released its monthly security update for September 2026, which includes 973 vulnerabilities affecting a range of products, including 113 that Microsoft marked as "critical."Microsoft notes that 2 of the vulnerabilities disclosed this month have been exploited in the wild:CVE-2026-81963 affects Windows Update Stack. CVE-2026-81963 is a elevation of privilege vulnerability associated with Improper Link Resolution Before File Access ('Link Following') and Improper Access Control and…
Microsoft is publishing 974 own-product vulnerabilities on September 2026 Patch Tuesday, including 723 vulnerabilities in Windows. Along with Microsoft fixes for 25 non-Microsoft CVEs, that brings the total number of vulnerabilities on the table today to 999. Whether this is the biggest Patch Tuesday ever depends on how we count, but this is by far the most CVEs that Microsoft has ever published in a single day. As Rapid7 noted last month, there is no reason to suppose that Patch Tuesday will…
This month, Microsoft released patches for a record-breaking 973 vulnerabilities, including 113 rated critical. It is by far the largest Patch Tuesday to date, well ahead of the previous high of 664 set in July 2026. Two vulnerabilities are listed as exploited in the wild, while none were publicly disclosed before Patch Tuesday. Notable fixes include Windows privilege escalation and critical RCEs in Skype for Business, MSMQ and RRAS. A few vulnerabilities worth mentioning: Windows Update Stack…
Microsoft kicks off September with its monthly Patch Tuesday release, delivering fixes for security vulnerabilities affecting its products. The security updates are packed with security fixes, providing organizations with important updates to help protect their environments from emerging threats. This Patch Tuesday is Microsoft’s largest security update ever, marking a significant increase over other recent massive releases, including the 570 security flaws fixed in July and 400 fixed in August…
Microsoft heeft 666 kwetsbaarheden verholpen in Windows. Een kwaadwillende kan de kwetsbaarheden misbruiken om aanvallen uit te voeren die kunnen leiden tot de categorieën schade, zoals genoemd in onderstaande tabel. Microsoft heeft voor Windows 666 kwetsbaarheden verholpen. De 32 ernstigste kwetsbaarheden bevinden zich in meerdere Windows componenten en hebben een CVSS score van 9.0 en hoger toegewezen gekregen. Kwaadwillenden met toegang tot deze componenten kunnen zonder voorafgaande…
Microsoft heeft 114 kwetsbaarheden verholpen in diverse Office producten. Een kwaadwillende kan de kwetsbaarheden misbruiken om aanvallen uit te voeren die kunnen leiden tot de categorieën schade, zoals genoemd in onderstaande tabel. Voor succesvol misbruik moet de kwaadwillende het slachtoffer misleiden een malafide bestand te openen of link te volgen. Microsoft heeft voor Office 114 kwetsbaarheden verholpen. De 4 ernstigste kwetsbaarheden bevinden zich in meerdere Office componenten en hebben…
Microsoft heeft 15 kwetsbaarheden verholpen in diverse Developer Tools. Een kwaadwillende kan de kwetsbaarheden misbruiken om aanvallen uit te voeren die kunnen leiden tot de categorieën schade zoals benoemd in onderstaande tabel. De ernstigste kwetsbaarheid met kenmerk CVE-2026-81376 heeft een CVSS-score van 9,6. Een kwaadwillende misbruiken door een gebruiker ertoe te verleiden een speciaal geprepareerde Visual Studio Code-workspace te openen. Hiermee kunnen de Workspace Trust-beperkingen…
Microsoft heeft 62 kwetsbaarheden verholpen in diverse componenten van SQL Server. Een kwaadwillende kan de kwetsbaarheden misbruiken om aanvallen uit te voeren die kunnen leiden tot de categorieën schade zoals benoemd in onderstaande tabel. ``` SQL Server: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-47297 | 8,10 | Uitvoeren van willekeurige code | | CVE-2026-66814 | 8,80 |…
Microsoft heeft 9 kwetsbaarheden verholpen in Exchange Server. Een kwaadwillende kan de kwetsbaarheden misbruiken om een Denial-of-Service uit te voeren, zich voor te doen als andere gebruiker, zich verhoogde rechten toe te kennen, willekeurige code uit te voeren en/of toegang te krijgen tot gevoelige gegevens. De ernstigste kwetsbaarheid met kenmerk CVE-2026-69380 heeft een CVSS-score van 9,9 en betreft een autorisatiekwetsbaarheid. Een geauthenticeerde kwaadwillende met beperkte rechten en…
Microsoft heeft 2 kwetsbaarheden verholpen in Dynamics, zowel online als on-premise. De kwetsbaarheden stellen een kwaadwillende in staat om zich verhoogde rechten toe te kennen, willekeurige code uit te voeren en/of toegang te krijgen tot gevoelige gegevens. ``` Microsoft Dynamics 365: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-65772 | 8,80 | Uitvoeren van willekeurige…