The researcher expressed extreme dissatisfaction with Microsoft\u2019s handling of previous disclosures, threatening further disruption and releasing the code as a direct retaliation. This unexpected release leaves millions of enterprise and government devices vulnerable.<\/p>\n
He further claims these vulnerabilities are intentionally placed backdoors, actively crediting internal Microsoft threat groups like MSTIC and GHOST in a highly unusual public flex.<\/p>\n
YellowKey BitLocker Bypass<\/strong><\/p>\n YellowKey is a critical exploit<\/a> that allows threat actors with physical access to entirely bypass BitLocker full-disk encryption in minutes<\/a>. The vulnerability resides within the Windows Recovery Environment (WinRE) and exclusively impacts Windows 11, Windows Server 2022, and Windows Server 2025.<\/p>\n Windows 10 remains unaffected due to structural differences in its recovery architecture. Attackers only need to copy a specifically named\u00a0FsTx\u00a0folder onto a compatible USB stick and plug it into the target machine.<\/p>\n Alternatively, attackers can physically extract the target drive, copy the exploit files directly into the EFI partition, and remount the drive to achieve the exact same result.<\/p>\n By rebooting the system into the recovery agent using specific key combinations, the exploit leverages WinRE components to spawn a shell with unrestricted access to the protected volume.<\/p>\n GreenPlasma Privilege Escalation<\/strong><\/p>\n Alongside the encryption bypass, the hacker released partial proof-of-concept code for GreenPlasma, a severe local privilege escalation<\/a> vulnerability. This specific flaw exploits the Windows CTFMON service through arbitrary memory section creation.<\/p>\n An unprivileged attacker can create these memory-section objects within directory structures that are normally writable only by the administrative SYSTEM account. Consequently, malicious actors can manipulate trusted Windows services and kernel-mode drivers into executing unauthorized commands.<\/p>\n While the current public code triggers a User Account Control prompt and requires additional weaponization to achieve a completely silent attack, it poses a substantial challenge for security defenders.<\/p>\n If fully chained with initial access vectors, this could allow persistent, full access to the core of the operating system.<\/p>\n Microsoft has not yet issued an official patch for these freshly dropped zero-day exploits. Independent security researchers analyzing the YellowKey threat strongly recommend implementing a custom BitLocker PIN and a robust BIOS password as immediate defensive mitigations.<\/p>\n While Nightmare-Eclipse claims the core vulnerability bypasses TPM and PIN configurations, the public proof-of-concept currently lacks that execution capability.<\/p>\n Security teams should actively monitor physical access to hardware endpoints and restrict unauthorized WinRE modifications until Microsoft officially resolves the situation.<\/p>\n Follow us on\u00a0Google News<\/a>,\u00a0LinkedIn<\/a>,\u00a0and\u00a0X<\/a>\u00a0to Get More Instant Updates.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"Two new unpatched Windows BitLocker zero-day vulnerabilities significantly compromise Microsoft\u2019s ecosystem. The exploits include a critical BitLocker encryption…\n","protected":false},"author":3,"featured_media":799488,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[158,67,132,68],"class_list":{"0":"post-799487","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-technology","8":"tag-technology","9":"tag-united-states","10":"tag-unitedstates","11":"tag-us"},"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@us\/116581707121948067","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/posts\/799487","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/comments?post=799487"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/posts\/799487\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/media\/799488"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/media?parent=799487"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/categories?post=799487"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/tags?post=799487"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}<\/p>\n
![\"\"\/](\"https:\/\/www.europesays.com\/us\/wp-content\/uploads\/2026\/05\/Greenplasma.webp\")
<\/p>\nThreat ComponentVulnerability TypeAffected SystemsKey Artifacts<\/tr>\n \n YellowKey<\/td>\n Encryption Bypass <\/td>\n Windows 11, Server 2022\/2025 <\/td>\n System Volume Information\\FsTx directory <\/td>\n<\/tr>\n \n YellowKey<\/td>\n WinRE Exploit <\/td>\n Windows 11, Server 2022\/2025 <\/td>\n bootmgfw.efi manipulation <\/td>\n<\/tr>\n \n GreenPlasma<\/td>\n Privilege Escalation <\/td>\n Windows 11, Server 2022\/2025 <\/td>\n CTFMON Arbitrary Section Creation <\/td>\n<\/tr>\n \n GreenPlasma<\/td>\n Memory Manipulation<\/td>\n Windows 11, Server 2022\/2025 <\/td>\n SYSTEM-writable directory objects <\/td>\n<\/tr>\n