{"vulnerability": "CVE-2021-27077", "sightings": [{"uuid": "3c79c47c-abd0-4b52-b48c-4a9c0dd21513", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-27077", "type": "published-proof-of-concept", "source": "https://t.me/CyberSecurityTechnologies/3945", "content": "#Threat_Research\n1. Zimbra 8.8.15 - Webmail Compromise via Email\nhttps://blog.sonarsource.com/zimbra-webmail-compromise-via-email\n2. CVE-2021-27077:\nSelecting Bitmaps Into Mismatched Device Contexts\nhttps://www.zerodayinitiative.com/blog/2021/7/26/cve-2021-27077-selecting-bitmaps-into-mismatched-device-contexts", "creation_timestamp": "2021-07-29T12:10:39.000000Z"}, {"uuid": "b14e701e-e829-4cc1-b7e6-d74b446ebc40", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-27077", "type": "seen", "source": "https://t.me/cissp/3920", "content": "Reversing for dummies - x86 assembly and C code (Beginner/ADHD friendly)\nhttps://0x41.cf/reversing/2021/07/21/reversing-x86-and-c-code-for-beginners.html\n\nThreat Research\n1. Zimbra 8.8.15 - Webmail Compromise via Email\ud83d\udc4d\ud83c\udffd\nhttps://blog.sonarsource.com/zimbra-webmail-compromise-via-email\n2. CVE-2021-27077:\nSelecting Bitmaps Into Mismatched Device Contexts\nhttps://www.zerodayinitiative.com/blog/2021/7/26/cve-2021-27077-selecting-bitmaps-into-mismatched-device-contexts\n\nOffensive security\nCobalt Strike BOF - Bypass AMSI in a remote process with code injection\nhttps://github.com/boku7/injectAmsiBypass\n\nCloud Security\nCritical 9.9 Vulnerability In Hyper-V Allowed Attackers To Exploit Azure (CVE-2021-28476)\ud83e\udd74\nhttps://www.guardicore.com/labs/critical-vulnerability-in-hyper-v-allowed-attackers-to-exploit-azure", "creation_timestamp": "2026-09-01T17:00:44.942373Z"}, {"uuid": "c33fb56d-d6aa-4d0f-9399-0515c989912c", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-27077", "type": "seen", "source": "https://t.me/cissp/3920", "content": "Reversing for dummies - x86 assembly and C code (Beginner/ADHD friendly)\nhttps://0x41.cf/reversing/2021/07/21/reversing-x86-and-c-code-for-beginners.html\n\nThreat Research\n1. Zimbra 8.8.15 - Webmail Compromise via Email\ud83d\udc4d\ud83c\udffd\nhttps://blog.sonarsource.com/zimbra-webmail-compromise-via-email\n2. CVE-2021-27077:\nSelecting Bitmaps Into Mismatched Device Contexts\nhttps://www.zerodayinitiative.com/blog/2021/7/26/cve-2021-27077-selecting-bitmaps-into-mismatched-device-contexts\n\nOffensive security\nCobalt Strike BOF - Bypass AMSI in a remote process with code injection\nhttps://github.com/boku7/injectAmsiBypass\n\nCloud Security\nCritical 9.9 Vulnerability In Hyper-V Allowed Attackers To Exploit Azure (CVE-2021-28476)\ud83e\udd74\nhttps://www.guardicore.com/labs/critical-vulnerability-in-hyper-v-allowed-attackers-to-exploit-azure", "creation_timestamp": "2026-09-02T01:04:30.930495Z"}, {"uuid": "d17eadf6-45ff-40d8-9a7b-f475df9bc9c8", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-27077", "type": "published-proof-of-concept", "source": "https://t.me/cissp/3920", "content": "Reversing for dummies - x86 assembly and C code (Beginner/ADHD friendly)\nhttps://0x41.cf/reversing/2021/07/21/reversing-x86-and-c-code-for-beginners.html\n\nThreat Research\n1. Zimbra 8.8.15 - Webmail Compromise via Email\ud83d\udc4d\ud83c\udffd\nhttps://blog.sonarsource.com/zimbra-webmail-compromise-via-email\n2. CVE-2021-27077:\nSelecting Bitmaps Into Mismatched Device Contexts\nhttps://www.zerodayinitiative.com/blog/2021/7/26/cve-2021-27077-selecting-bitmaps-into-mismatched-device-contexts\n\nOffensive security\nCobalt Strike BOF - Bypass AMSI in a remote process with code injection\nhttps://github.com/boku7/injectAmsiBypass\n\nCloud Security\nCritical 9.9 Vulnerability In Hyper-V Allowed Attackers To Exploit Azure (CVE-2021-28476)\ud83e\udd74\nhttps://www.guardicore.com/labs/critical-vulnerability-in-hyper-v-allowed-attackers-to-exploit-azure", "creation_timestamp": "2026-09-11T00:00:08.845791Z"}]}