{"vulnerability": "CVE-2021-34423", "sightings": [{"uuid": "aa900622-808a-4ac0-8e93-fbc548a8bf2c", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-34423", "type": "published-proof-of-concept", "source": "https://t.me/GithubRedTeam/630", "content": "GitHub\u76d1\u63a7\u6d88\u606f\u63d0\u9192\uff01\uff01\uff01\n\n\u66f4\u65b0\u4e86\uff1aCVE-2021\n\u63cf\u8ff0\uff1aPOC for scanning ProxyShell(CVE-2021-34423,CVE-2021-34473,CVE-2021-31207)\nURL\uff1ahttps://github.com/mithridates1313/ProxyShell_POC", "creation_timestamp": "2021-10-02T08:47:08.000000Z"}, {"uuid": "6330c519-6bc6-4d19-be33-b3efc56d30bd", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-34423", "type": "published-proof-of-concept", "source": "https://t.me/hacker_trick/228", "content": "#poc for scanning ProxyShell (CVE-2021-34423,CVE-2021-34473,CVE-2021-31207)\nhttps://github.com/mithridates1313/ProxyShell_POC\n\nthe metasploit script(POC/EXP) about CVE-2021-22005 VMware vCenter Server contains an arbitrary file upload vulnerability\nhttps://github.com/TaroballzChen/CVE-2021-22005-metasploit", "creation_timestamp": "2021-10-03T08:55:43.000000Z"}, {"uuid": "a7ca120f-5fe0-446d-84ac-9321f7cddad5", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-34423", "type": "seen", "source": "https://t.me/true_secator/2389", "content": "Zoom \u044d\u043a\u0441\u0442\u0440\u0435\u043d\u043d\u043e \u043b\u0430\u0442\u0430\u0435\u0442 \u0434\u044b\u0440\u044b \u0432 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0441\u0432\u043e\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u044b\u0445 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u043e\u0432. 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CVE-2021-34423 \u043f\u043e\u0442\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u0437\u043b\u043e\u0443\u043c\u044b\u0448\u043b\u0435\u043d\u043d\u0438\u043a\u0443 \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u0441\u0431\u043e\u0439 \u0441\u043b\u0443\u0436\u0431\u044b \u0438\u043b\u0438 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u044d\u0442\u0443 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0434\u043b\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u043e\u0433\u043e \u043a\u043e\u0434\u0430 \u0432 \u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e \u0448\u0438\u0440\u043e\u043a\u043e\u043c \u0441\u043f\u0435\u043a\u0442\u0440\u0435 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u043e\u0432 \u0438 SDK \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u043e\u0432 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438. \u041e\u0448\u0438\u0431\u043a\u0430 \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435\u043c \u0431\u0443\u0444\u0435\u0440\u0430 \u0438 \u0438\u043c\u0435\u0435\u0442 \u043e\u0446\u0435\u043d\u043a\u0443 \u043f\u043e CVSS 7,3.\n \n\u0412\u0442\u043e\u0440\u0430\u044f \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u043d\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c CVE-2021-34424 \u043f\u0440\u0438\u0432\u043e\u0434\u0438\u043b\u0430 \u043a \u043f\u043e\u0432\u0440\u0435\u0436\u0434\u0435\u043d\u0438\u044e \u043f\u0430\u043c\u044f\u0442\u0438 \u0438 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u043b\u0430 \u0432\u044b\u044f\u0432\u0438\u0442\u044c \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 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\u0441\u0432\u043e\u0435\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0441\u0432\u043e\u0438\u0445 \u043a\u043b\u0438\u0435\u043d\u0442\u043e\u0432 Zoom \u0434\u043e\u0431\u0430\u0432\u0438\u043b \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u0432 desktop \u0432\u0435\u0440\u0441\u0438\u0438, \u0441\u043e\u0431\u0441\u0442\u0432\u0435\u043d\u043d\u043e, \u043a\u043e\u0442\u043e\u0440\u044b\u043c \u0446\u0435\u043b\u0435\u0441\u043e\u043e\u0431\u0440\u0430\u0437\u043d\u043e \u0432\u043e\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u0432\u0441\u0435\u043c \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f\u043c \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b.", "creation_timestamp": "2021-11-30T14:20:00.000000Z"}, {"uuid": "e93f3ad2-437f-4033-b0b1-d7e16d381f8d", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-34423", "type": "seen", "source": "https://t.me/NeKaspersky/1501", "content": "Zoom \u0432\u044b\u043f\u0443\u0441\u0442\u0438\u043b \u043e\u0447\u0435\u0440\u0435\u0434\u043d\u044b\u0435 \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0431\u0430\u0433\u043e\u0432. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0443 \u043d\u0438\u0445, \u043a\u0430\u043a \u0438 \u0443 Microsoft \u2014 \u043d\u0438\u043a\u043e\u0433\u0434\u0430 \u043d\u0435 \u0437\u0430\u043a\u0430\u043d\u0447\u0438\u0432\u0430\u044e\u0442\u0441\u044f. \n\n\u041d\u0435 \u0432 \u043f\u0435\u0440\u0432\u044b\u0439 \u0440\u0430\u0437 Zoom \u043f\u0440\u0438\u0432\u043b\u0435\u043a\u0430\u0435\u0442 \u043a \u0441\u0435\u0431\u0435 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\u043f\u0430\u043c\u044f\u0442\u0438.\n\n\u041a \u0441\u0447\u0430\u0441\u0442\u044c\u044e, \u043d\u0435 \u0432\u0441\u0435 \u0442\u0430\u043a \u043f\u043b\u043e\u0445\u043e: \u043a\u043e\u043c\u0430\u043d\u0434\u0430 Zoom \u043d\u0430\u043a\u043e\u043d\u0435\u0446-\u0442\u043e \u0434\u043e\u0431\u0430\u0432\u0438\u043b\u0430 \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f, \u0447\u0442\u043e\u0431\u044b \u043f\u043e\u043b\u0443\u0447\u0430\u0442\u044c \u0432\u0441\u0435 \u043d\u043e\u0432\u044b\u0435 \u043f\u0430\u0442\u0447\u0438 \u0441\u0440\u0430\u0437\u0443 \u043f\u043e\u0441\u043b\u0435 \u0438\u0445 \u0432\u044b\u0445\u043e\u0434\u0430. \n\n\u0423\u0432\u044b, \u043d\u043e \u0434\u0430\u043d\u043d\u0430\u044f \u0444\u0443\u043d\u043a\u0446\u0438\u044f \u0435\u0441\u0442\u044c \u043b\u0438\u0448\u044c \u043d\u0430 Windows \u0438 macOS, \u0430 \u0432\u043e\u0442 \u043e\u0431\u043b\u0430\u0434\u0430\u0442\u0435\u043b\u044f\u043c Linux, \u0432\u0438\u0434\u0438\u043c\u043e, \u043f\u0440\u0438\u0434\u0435\u0442\u0441\u044f \u0435\u0449\u0435 \u043f\u043e\u0434\u043e\u0436\u0434\u0430\u0442\u044c.", "creation_timestamp": "2021-12-02T11:24:07.000000Z"}, {"uuid": "7039cbba-4d41-459c-8f92-758530d992e9", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-34423", "type": "seen", "source": "https://t.me/cibsecurity/32969", "content": "\u203c CVE-2021-34423 \u203c\n\nA buffer overflow vulnerability was discovered in Zoom Client for Meetings (for Android, iOS, Linux, macOS, and Windows) before version 5.8.4, Zoom Client for Meetings for Blackberry (for Android and iOS) before version 5.8.1, Zoom Client for Meetings for intune (for Android and iOS) before version 5.8.4, Zoom Client for Meetings for Chrome OS before version 5.0.1, Zoom Rooms for Conference Room (for Android, AndroidBali, macOS, and Windows) before version 5.8.3, Controllers for Zoom Rooms (for Android, iOS, and Windows) before version 5.8.3, Zoom VDI before version 5.8.4, Zoom Meeting SDK for Android before version 5.7.6.1922, Zoom Meeting SDK for iOS before version 5.7.6.1082, Zoom Meeting SDK for macOS before version 5.7.6.1340, Zoom Meeting SDK for Windows before version 5.7.6.1081, Zoom Video SDK (for Android, iOS, macOS, and Windows) before version 1.1.2, Zoom On-Premise Meeting Connector Controller before version 4.8.12.20211115, Zoom On-Premise Meeting Connector MMR before version 4.8.12.20211115, Zoom On-Premise Recording Connector before version 5.1.0.65.20211116, Zoom On-Premise Virtual Room Connector before version 4.4.7266.20211117, Zoom On-Premise Virtual Room Connector Load Balancer before version 2.5.5692.20211117, Zoom Hybrid Zproxy before version 1.0.1058.20211116, and Zoom Hybrid MMR before version 4.6.20211116.131_x86-64. This can potentially allow a malicious actor to crash the service or application, or leverage this vulnerability to execute arbitrary code.\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "creation_timestamp": "2021-11-24T20:27:07.000000Z"}, {"uuid": "5bdd02f9-6bcd-491d-8959-1d578b4a5c2a", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-34423", "type": "exploited", "source": "https://t.me/CyberSecurityTechnologies/4055", "content": "#Offensive_security\nNuclei Scanner for Proxyshell RCE\n(CVE-2021-34423, CVE-2021-34473, CVE-2021-31207)\nhttps://github.com/cyberheartmi9/Proxyshell-Scanner\n]-> PoC for scanning ProxyShell:\nhttps://github.com/mithridates1313/ProxyShell_POC", "creation_timestamp": "2021-10-02T16:54:19.000000Z"}, {"uuid": "37b84a1c-e3e8-4100-9917-2a7ce4d29459", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-34423", "type": "seen", "source": "Telegram/82WzZR4SeVKGZngFmfTXCNP7Y6iUTJPQ9HnhkKIB0RZgq9E", "content": "", "creation_timestamp": "2026-08-15T08:00:11.331509Z"}, {"uuid": "a314177c-8d31-4d15-ade9-1a98a7fbfbe3", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-34423", "type": "published-proof-of-concept", "source": "Telegram/82WzZR4SeVKGZngFmfTXCNP7Y6iUTJPQ9HnhkKIB0RZgq9E", "content": "", "creation_timestamp": "2026-08-16T00:00:11.735501Z"}, {"uuid": "cc77dd0f-23ff-4036-8892-b07ed39e57c7", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-34423", "type": "seen", "source": "https://t.me/cissp/4021", "content": "Offensive security\nNuclei Scanner for Proxyshell RCE\n(CVE-2021-34423, CVE-2021-34473, CVE-2021-31207)\nhttps://github.com/cyberheartmi9/Proxyshell-Scanner\n\nCloud Security\nSecurity as code:\nThe best (and maybe only) path to securing cloud applications and systems\nhttps://www.mckinsey.com/business-functions/mckinsey-digital/our-insights/security-as-code-the-best-and-maybe-only-path-to-securing-cloud-applications-and-systems\n\n\nRed Team Tactics\n1.  ; echo \"Shell Injection\"\nhttps://matklad.github.io//2021/07/30/shell-injection.html\n2. Bypass UAC at any level by abusing the Program Compatibility Assistant with RPC, WDI, and more Windows components\nhttps://github.com/AzAgarampur/byeintegrity8-uac\n\nThreat Research\n1. Visual Studio Code\u00a0.ipynb\u00a0Jupyter Notebook XSS (Arbitrary File Read)\nhttps://github.com/justinsteven/advisories/blob/master/2021_vscode_ipynb_xss_arbitrary_file_read.md\n2. GraphQL Security Analysis\nhttps://securitygoat.medium.com/common-graphql-misconceptions-a-rant-489647167ca3", "creation_timestamp": "2026-09-01T17:00:42.905869Z"}, {"uuid": "e0464c8b-f29e-4097-9c0f-e9c883a91c5c", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-34423", "type": "seen", "source": "https://t.me/cissp/4021", "content": "Offensive security\nNuclei Scanner for Proxyshell RCE\n(CVE-2021-34423, CVE-2021-34473, CVE-2021-31207)\nhttps://github.com/cyberheartmi9/Proxyshell-Scanner\n\nCloud Security\nSecurity as code:\nThe best (and maybe only) path to securing cloud applications and systems\nhttps://www.mckinsey.com/business-functions/mckinsey-digital/our-insights/security-as-code-the-best-and-maybe-only-path-to-securing-cloud-applications-and-systems\n\n\nRed Team Tactics\n1.  ; echo \"Shell Injection\"\nhttps://matklad.github.io//2021/07/30/shell-injection.html\n2. Bypass UAC at any level by abusing the Program Compatibility Assistant with RPC, WDI, and more Windows components\nhttps://github.com/AzAgarampur/byeintegrity8-uac\n\nThreat Research\n1. Visual Studio Code\u00a0.ipynb\u00a0Jupyter Notebook XSS (Arbitrary File Read)\nhttps://github.com/justinsteven/advisories/blob/master/2021_vscode_ipynb_xss_arbitrary_file_read.md\n2. GraphQL Security Analysis\nhttps://securitygoat.medium.com/common-graphql-misconceptions-a-rant-489647167ca3", "creation_timestamp": "2026-09-02T01:04:30.061617Z"}]}