{"vulnerability": "CVE-2025-34491", "sightings": [{"uuid": "6088a749-9459-4d4a-96f4-38b5653bb792", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2025-34491", "type": "seen", "source": "https://t.me/cvedetector/23952", "content": "{\n  \"Source\": \"CVE FEED\",\n  \"Title\": \"CVE-2025-34491 - GFI MailEssentials .NET Deserialization Remote Code Execution Vulnerability\", \n  \"Content\": \"CVE ID : CVE-2025-34491 \nPublished : April 28, 2025, 8:15 p.m. | 1\u00a0hour, 35\u00a0minutes ago \nDescription : GFI MailEssentials prior to version 21.8 is vulnerable to a .NET deserialization issue. A remote and authenticated attacker can execute arbitrary code by sending crafted serialized .NET when joining to a Multi-Server setup. \nSeverity: 8.8 | HIGH \nVisit the link for more details, such as CVSS details, affected products, timeline, and more...\",\n  \"Detection Date\": \"28 Apr 2025\",\n  \"Type\": \"Vulnerability\"\n}\n\ud83d\udd39 t.me/cvedetector \ud83d\udd39", "creation_timestamp": "2025-04-29T00:06:29.000000Z"}, {"uuid": "03a8d7ca-eeb6-4c4c-b639-4987fca85733", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2025-34491", "type": "seen", "source": "https://mastodon.social/users/CyberSignaler/statuses/114417790264877305", "content": "", "creation_timestamp": "2025-04-28T21:49:17.596581Z"}, {"uuid": "145876b1-4d67-4e47-a03c-bc05676eee1b", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2025-34491", "type": "seen", "source": "https://bsky.app/profile/cve.skyfleet.blue/post/3lnvsoowbph2t", "content": "", "creation_timestamp": "2025-04-28T22:25:29.753493Z"}, {"uuid": "43b56d3b-5e10-4541-badb-953a159ae52b", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2025-34491", "type": "seen", "source": "https://bsky.app/profile/redteamnews.bsky.social/post/3lnvvymg75c25", "content": "", "creation_timestamp": "2025-04-28T23:24:43.967524Z"}, {"uuid": "b067e19e-581a-4abf-a14c-de9da20f31d1", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2025-34491", "type": "published-proof-of-concept", "source": "https://t.me/DarkWebInformer_CVEAlerts/13733", "content": "\ud83d\udd17 DarkWebInformer.com - Cyber Threat Intelligence\n\ud83d\udccc CVE ID: CVE-2025-34491\n\ud83d\udd25 CVSS Score: 8.8 (cvssV3_1, Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)\n\ud83d\udd39 Description: GFI MailEssentials prior to version 21.8 is vulnerable to a .NET deserialization issue. A remote and authenticated attacker can execute arbitrary code by sending crafted serialized .NET when joining to a Multi-Server setup.\n\ud83d\udccf Published: 2025-04-28T19:20:02.027Z\n\ud83d\udccf Modified: 2025-04-28T19:41:07.044Z\n\ud83d\udd17 References:\n1. https://frycos.github.io/vulns4free/2025/04/28/mailessentials.html\n2. https://gfi.ai/products-and-solutions/network-security-solutions/mailessentials/resources/documentation/product-releases", "creation_timestamp": "2025-04-28T20:11:21.000000Z"}]}