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"content": "Microsoft heeft kwetsbaarheden verholpen in Windows. Een kwaadwillende kan de kwetsbaarheden misbruiken om aanvallen uit te voeren die kunnen leiden tot de volgende categorie\u00ebn schade:\n\n- Denial-of-Service (DoS)\n- Uitvoeren van willekeurige code (root/admin-rechten)\n- Uitvoeren van willekeurige code (gebruikersrechten)\n- Verkrijgen van verhoogde rechten\n- Omzeilen van een beveiligingsmaatregel\n- Toegang tot gevoelige gegevens\n\nDe ernstigste kwetsbaarheden hebben kenmerken CVE-2026-40402, CVE-2026-41089 en CVE-2026-41096 toegewezen gekregen en bevinden zich respectievelijk in Hyper-V, NETLOGON en de DNS Client. De kwetsbaarheid in Hyper-V stelt een geauthenticeerde kwaadwillende in staat om uit de Guest-VM te breken en toegang te krijgen tot geheugen van de host en mogelijk willekeurige code uit te voeren op de host. De kwetsbaarheden in NETLOGON en de DNS Client stellen een ongeauthenticeerde kwaadwillende op afstand in staat om willekeurige code uit te voeren op het kwetsbare systeem.\n\n**Met name Domain Controllers die toegankelijk zijn vanaf externe netwerken lopen een hoog risico voor actief misbruik van de kwetsbaarheid in NETLOGON.**\n\nHet verdient altijd aanbeveling om een systeem met de rol van Domain Controller niet publiek toegankelijk te hebben en, indien dit noodzakelijk is, additionele maatregelen te hebben genomen.\n\n```\nWindows Projected File System: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-34340 | 7.00 | Verkrijgen van verhoogde rechten    | \n|----------------|------|-------------------------------------|\n\nWindows Application Identity (AppID) Subsystem: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-34343 | 7.80 | Verkrijgen van verhoogde rechten    | \n|----------------|------|-------------------------------------|\n\nUndisclosed: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-41095 | 7.80 | Verkrijgen van verhoogde rechten    | \n|----------------|------|-------------------------------------|\n\nWindows Remote Desktop: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-40398 | 7.80 | Verkrijgen van verhoogde rechten    | \n|----------------|------|-------------------------------------|\n\nMicrosoft Windows DNS: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-41096 | 9.80 | Uitvoeren van willekeurige code     | \n|----------------|------|-------------------------------------|\n\nWindows Ancillary Function Driver for WinSock: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-34344 | 7.80 | Verkrijgen van verhoogde rechten    | \n| CVE-2026-34345 | 7.00 | Verkrijgen van verhoogde rechten    | \n| CVE-2026-35416 | 7.00 | Verkrijgen van verhoogde rechten    | \n| CVE-2026-41088 | 7.80 | Verkrijgen van verhoogde rechten    | \n|----------------|------|-------------------------------------|\n\nWindows Kernel: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-33841 | 7.80 | Verkrijgen van verhoogde rechten    | \n| CVE-2026-35420 | 7.80 | Verkrijgen van verhoogde rechten    | \n| CVE-2026-40369 | 7.80 | Verkrijgen van verhoogde rechten    | \n|----------------|------|-------------------------------------|\n\nWindows Secure Boot: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-41097 | 6.70 | Omzeilen van beveiligingsmaatregel  | \n|----------------|------|-------------------------------------|\n\nWindows Native WiFi Miniport Driver: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-32161 | 7.50 | Uitvoeren van willekeurige code     | \n|----------------|------|-------------------------------------|\n\nWindows Kernel-Mode Drivers: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-40408 | 7.80 | Verkrijgen van verhoogde rechten    | \n| CVE-2026-34332 | 8.00 | Uitvoeren van willekeurige code     | \n|----------------|------|-------------------------------------|\n\nTelnet Client: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-35423 | 5.40 | Toegang tot gevoelige gegevens      | \n|----------------|------|-------------------------------------|\n\nWindows Print Spooler Components: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-34342 | 7.00 | Verkrijgen van verhoogde rechten    | \n|----------------|------|-------------------------------------|\n\nWindows SMB Client: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-40410 | 7.00 | Verkrijgen van verhoogde rechten    | \n|----------------|------|-------------------------------------|\n\nWindows Storage Spaces Controller: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-35415 | 7.80 | Verkrijgen van verhoogde rechten    | \n|----------------|------|-------------------------------------|\n\nWindows Filtering Platform (WFP): \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-32209 | 4.40 | Omzeilen van beveiligingsmaatregel  | \n|----------------|------|-------------------------------------|\n\nWindows Volume Manager Extension Driver: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-40380 | 6.20 | Uitvoeren van willekeurige code     | \n|----------------|------|-------------------------------------|\n\nWindows Cryptographic Services: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-40377 | 7.80 | Verkrijgen van verhoogde rechten    | \n|----------------|------|-------------------------------------|\n\nWindows Win32K - GRFX: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-33839 | 7.00 | Verkrijgen van verhoogde rechten    | \n| CVE-2026-34330 | 7.80 | Verkrijgen van verhoogde rechten    | \n| CVE-2026-34331 | 7.00 | Verkrijgen van verhoogde rechten    | \n| CVE-2026-34333 | 7.80 | Verkrijgen van verhoogde rechten    | \n| CVE-2026-34347 | 7.00 | Verkrijgen van verhoogde rechten    | \n| CVE-2026-40403 | 8.80 | Uitvoeren van willekeurige code     | \n|----------------|------|-------------------------------------|\n\nWindows Admin Center: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-35438 | 8.30 | Verkrijgen van verhoogde rechten    | \n|----------------|------|-------------------------------------|\n\nWindows Hyper-V: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-40402 | 9.30 | Verkrijgen van verhoogde rechten    | \n|----------------|------|-------------------------------------|\n\nWindows Rich Text Edit Control: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-32170 | 6.70 | Verkrijgen van verhoogde rechten    | \n|----------------|------|-------------------------------------|\n\nWindows Event Logging Service: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-33834 | 7.80 | Verkrijgen van verhoogde rechten    | \n|----------------|------|-------------------------------------|\n\nWindows Internet Key Exchange (IKE) Protocol: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-35424 | 7.50 | Denial-of-Service                   | \n|----------------|------|-------------------------------------|\n\nWindows Netlogon: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-41089 | 9.80 | Uitvoeren van willekeurige code     | \n|----------------|------|-------------------------------------|\n\nWindows Storport Miniport Driver: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-34350 | 6.50 | Denial-of-Service                   | \n|----------------|------|-------------------------------------|\n\nWindows Common Log File System Driver: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-40407 | 7.80 | Verkrijgen van verhoogde rechten    | \n| CVE-2026-40397 | 7.80 | Verkrijgen van verhoogde rechten    | \n|----------------|------|-------------------------------------|\n\nWindows Cloud Files Mini Filter Driver: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-35418 | 7.80 | Verkrijgen van verhoogde rechten    | \n| CVE-2026-33835 | 7.80 | Verkrijgen van verhoogde rechten    | \n| CVE-2026-34337 | 7.80 | Verkrijgen van verhoogde rechten    | \n|----------------|------|-------------------------------------|\n\nWindows Win32K - ICOMP: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-33840 | 7.80 | Verkrijgen van verhoogde rechten    | \n| CVE-2026-35417 | 7.80 | Verkrijgen van verhoogde rechten    | \n|----------------|------|-------------------------------------|\n\nWindows GDI: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-35421 | 7.80 | Uitvoeren van willekeurige code     | \n|----------------|------|-------------------------------------|\n\nWindows Rich Text Edit: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-21530 | 6.70 | Verkrijgen van verhoogde rechten    | \n|----------------|------|-------------------------------------|\n\nWindows TCP/IP: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-34351 | 7.80 | Verkrijgen van verhoogde rechten    | \n| CVE-2026-35422 | 6.50 | Omzeilen van beveiligingsmaatregel  | \n| CVE-2026-40399 | 7.80 | Verkrijgen van verhoogde rechten    | \n| CVE-2026-40405 | 7.50 | Denial-of-Service                   | \n| CVE-2026-40406 | 7.50 | Toegang tot gevoelige gegevens      | \n| CVE-2026-40414 | 7.40 | Denial-of-Service                   | \n| CVE-2026-40415 | 8.10 | Uitvoeren van willekeurige code     | \n| CVE-2026-33837 | 7.80 | Verkrijgen van verhoogde rechten    | \n| CVE-2026-34334 | 7.80 | Verkrijgen van verhoogde rechten    | \n| CVE-2026-40401 | 6.20 | Denial-of-Service                   | \n| CVE-2026-40413 | 7.40 | Denial-of-Service                   | \n|----------------|------|-------------------------------------|\n\nWindows LDAP - Lightweight Directory Access Protocol: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-34339 | 5.50 | Denial-of-Service                   | \n|----------------|------|-------------------------------------|\n\nWindows Telephony Service: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-42825 | 7.00 | Verkrijgen van verhoogde rechten    | \n| CVE-2026-34338 | 7.80 | Verkrijgen van verhoogde rechten    | \n| CVE-2026-40382 | 7.80 | Verkrijgen van verhoogde rechten    | \n|----------------|------|-------------------------------------|\n\nWindows Message Queuing: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-34329 | 8.80 | Uitvoeren van willekeurige code     | \n| CVE-2026-33838 | 7.80 | Verkrijgen van verhoogde rechten    | \n|----------------|------|-------------------------------------|\n\nWindows DWM Core Library: \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-35419 | 5.50 | Toegang tot gevoelige gegevens      | \n| CVE-2026-42896 | 7.80 | Verkrijgen van verhoogde rechten    | \n| CVE-2026-34336 | 7.80 | Toegang tot gevoelige gegevens      | \n|----------------|------|-------------------------------------|\n\nWindows Link-Layer Discovery Protocol (LLDP): \n|----------------|------|-------------------------------------|\n| CVE-ID         | CVSS | Impact                              |\n|----------------|------|-------------------------------------|\n| CVE-2026-34341 | 7.00 | Verkrijgen van verhoogde rechten    | \n|----------------|------|-------------------------------------|\n\n```", "creation_timestamp": "2026-05-12T15:52:42.000000Z"}, {"uuid": "55fab201-b97e-4068-a51c-b22796919893", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "4f29edb9-4c4b-44ca-b041-9b050656b6ae", "vulnerability": "CVE-2026-41096", "type": "seen", "source": "https://krebsonsecurity.com/2026/05/patch-tuesday-may-2026-edition/", "content": "Artificial intelligence platforms may be just as susceptible to social engineering as human beings, but they are proving remarkably good at finding security vulnerabilities in human-made computer code. That reality is on full display this month with some of the more widely-used software makers — including Apple, Google, Microsoft, Mozilla and Oracle — fixing near record volumes of security bugs, and/or quickening the tempo of their patch releases.\n\nAs it does on the second Tuesday of every month, Microsoft today released software updates to address at least 118 security vulnerabilities in its various Windows operating systems and other products. Remarkably, this is the first Patch Tuesday in nearly two years that Microsoft is not shipping any fixes to deal with emergency zero-day flaws that are already being exploited. Nor have any of the flaws fixed today been previously disclosed (potentially giving attackers a heads up in how to exploit the weakness).\n\nSixteen of the vulnerabilities earned Microsoft’s most-dire “critical” label, meaning malware or miscreants could abuse these bugs to seize remote control over a vulnerable Windows device with little or no help from the user. Rapid7 has done much of the heavy lifting in identifying some of the more concerning critical weaknesses this month, including:<span id=\"more-73582\"></span>\n\n\n\nCVE-2026-41089: A critical stack-based buffer overflow in Windows Netlogon that offers an attacker SYSTEM privileges on the domain controller. No privileges or user interaction are required, and attack complexity is low. Patches are available for all versions of Windows Server from 2012 onwards.\n\nCVE-2026-41096: A critical RCE in the Windows DNS client implementation worthy of attention despite Microsoft assessing exploitation as less likely.\n\nCVE-2026-41103: A critical elevation of privilege vulnerability that allows an unauthorized attacker to impersonate an existing user by presenting forged credentials, thus bypassing Entra ID. Microsoft expects that exploitation is more likely.\n\n\nMay’s Patch Tuesday is a welcome respite from April, which saw Microsoft fix a near-record 167 security flaws. Microsoft was among a few dozen tech giants given access to a “Project Glasswing,” a much-hyped AI capability developed by Anthropic that appears quite effective at unearthing security vulnerabilities in code.\n\nApple, another early participant in Project Glasswing, typically fixes an average of 20 vulnerabilities each time it ships a security update for iOS devices, said Chris Goettl, vice president of product management at Ivanti. On May 11, Apple shipped iOS 15, which addressed at least 52 vulnerabilities and backported the changes all the way to iPhone 6s and iOS 15.\n\nLast month, Mozilla released Firefox 150, which resolved a whopping 271 vulnerabilities that were reportedly discovered during the Glasswing evaluation.\n\n“Since Firefox 150.0.0 released, they have been on a more aggressive weekly cadence for security updates including the release of Firefox 150.0.3 on May Patch Tuesday resolving between three to five CVEs in each release,” Goettl said.\n\nThe software giant Oracle likewise recently increased its patch pace in response to their work with Glasswing. In its most recent quarterly patch update, Oracle addressed at least 450 flaws, including more than 300 fixes for remotely exploitable, unauthenticated flaws. But at the end of April, Oracle announced it was switching to a monthly update cycle for critical security issues.\n\nOn May 8, Google started rolling out updates to its Chrome browser that fixed an astonishing 127 security flaws (up from just 30 the previous month). Chrome automagically downloads available security updates, but installing them requires fully restarting the browser.\n\nIf you encounter any weirdness applying the updates from Microsoft or any other vendor mentioned here, feel free to sound off in the comments below. Meantime, if you haven’t backed up your data and/or drive lately, doing that before updating is generally sound advice. For a more granular look at the Microsoft updates released today, checkout this inventory by the SANS Internet Storm Center.", "creation_timestamp": "2026-05-12T19:46:45.000000Z"}, {"uuid": "38965abc-268e-4390-9598-cf1bfebad8a2", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "4f29edb9-4c4b-44ca-b041-9b050656b6ae", "vulnerability": "CVE-2026-41096", "type": "published-proof-of-concept", "source": "Telegram/q3bZ7dzwt6XdRM-jyUWUHYQhep0OmyjD4PHNSw542P5jdgA", "content": "", "creation_timestamp": "2026-05-15T15:00:07.000000Z"}, {"uuid": "c5d1e4a3-e84a-430e-99a8-3feee2435db8", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "4f29edb9-4c4b-44ca-b041-9b050656b6ae", "vulnerability": "CVE-2026-41096", "type": "seen", "source": "Telegram/aIPIWoZyEYzzX9nHUVKB1aA0s_e1mj3mQ8Eug10fFDw9pT4", "content": "", "creation_timestamp": "2026-05-24T03:00:05.000000Z"}, {"uuid": "f4453820-b842-47f8-babc-a8412780f14b", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "4f29edb9-4c4b-44ca-b041-9b050656b6ae", "vulnerability": "CVE-2026-41096", "type": "seen", "source": "Telegram/tLTaf5zN9aUn_D8KOi_rgxptZENw0EocHmy4bQpa2VASaD8", "content": "", "creation_timestamp": "2026-05-24T09:00:04.000000Z"}, {"uuid": "c0b20d0c-47a0-4866-995d-99255e921215", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "4f29edb9-4c4b-44ca-b041-9b050656b6ae", "vulnerability": "CVE-2026-41096", "type": "seen", "source": "Telegram/Ob2oA_mupoVDMqE6Q_QCizAK8aYtg6z11DPx_SkAfocJmb0", "content": "", "creation_timestamp": "2026-05-24T21:00:04.000000Z"}, {"uuid": "76930f15-9a85-4bd8-a6f4-b54d22d9f309", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "4f29edb9-4c4b-44ca-b041-9b050656b6ae", "vulnerability": "CVE-2026-41096", "type": "seen", "source": "Telegram/hAogTto79Jt-ZuW6Hp_UeFLdQ6LmAiGRTnFY6xKkiQBfaYY", "content": "", "creation_timestamp": "2026-06-04T21:00:04.000000Z"}, {"uuid": "32ecab76-74f9-4427-aee8-8485303224cb", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "4f29edb9-4c4b-44ca-b041-9b050656b6ae", "vulnerability": "CVE-2026-41096", "type": "seen", "source": "https://t.me/GithubRedTeam/103851", "content": "", "creation_timestamp": "2026-09-30T11:00:08.000000Z"}, {"uuid": "1dc1b272-e79d-42ab-9806-40abc5cf8632", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "4f29edb9-4c4b-44ca-b041-9b050656b6ae", "vulnerability": "CVE-2026-41096", "type": "published-proof-of-concept", "source": "https://t.me/GithubRedTeam/103851", "content": "", "creation_timestamp": "2026-09-30T11:00:08.000000Z"}]}