{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-34659/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[{"cvss":9.6,"id":"CVE-2026-34659"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["Connect"],"_cs_severities":["high"],"_cs_tags":["deserialization","rce","cve-2026-34659"],"_cs_type":"threat","_cs_vendors":["Adobe"],"content_html":"\u003cp\u003eAdobe Connect versions 2025.9.15, 2025.8.157 and earlier are susceptible to a Deserialization of Untrusted Data vulnerability, as detailed in CVE-2026-34659. This flaw enables an attacker to achieve arbitrary code execution within the security context of the currently logged-in user. The attack necessitates user interaction, requiring the victim to either navigate to a specially crafted URL or engage with a compromised web page. Successful exploitation grants the attacker the capability to execute arbitrary code on the affected system.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker crafts a malicious URL containing serialized data.\u003c/li\u003e\n\u003cli\u003eThe attacker entices a user to visit the malicious URL through social engineering or other means.\u003c/li\u003e\n\u003cli\u003eThe user\u0026rsquo;s web browser sends a request to the Adobe Connect server.\u003c/li\u003e\n\u003cli\u003eThe Adobe Connect server receives the request with the malicious serialized data.\u003c/li\u003e\n\u003cli\u003eThe server deserializes the untrusted data without proper validation.\u003c/li\u003e\n\u003cli\u003eThe deserialization process triggers the execution of arbitrary code.\u003c/li\u003e\n\u003cli\u003eAttacker gains control of the user\u0026rsquo;s session or the server itself depending on the code executed.\u003c/li\u003e\n\u003cli\u003eThe attacker escalates privileges or performs other malicious actions based on the achieved access.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of this vulnerability allows an attacker to execute arbitrary code on the affected system, potentially leading to complete system compromise, data theft, or denial of service. Due to the nature of the vulnerability, any user accessing a malicious URL or compromised page is at risk. The CVSS v3.1 base score is 9.6, indicating a critical severity.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eApply the security patch provided by Adobe as detailed in the advisory linked in the references to remediate CVE-2026-34659.\u003c/li\u003e\n\u003cli\u003eImplement web server access logging and deploy the Sigma rule \u0026ldquo;Detect Adobe Connect CVE-2026-34659 Exploitation Attempt\u0026rdquo; to identify potential exploitation attempts.\u003c/li\u003e\n\u003cli\u003eEducate users about the risks of clicking on suspicious links or visiting untrusted websites to prevent initial access.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-12T19:17:24Z","date_published":"2026-05-12T19:17:24Z","id":"https://feed.craftedsignal.io/briefs/2026-05-adobe-connect-deserialization/","summary":"Adobe Connect versions 2025.9.15, 2025.8.157 and earlier are vulnerable to deserialization of untrusted data, potentially leading to arbitrary code execution if a user interacts with a malicious URL or compromised webpage.","title":"Adobe Connect Deserialization of Untrusted Data Vulnerability (CVE-2026-34659)","url":"https://feed.craftedsignal.io/briefs/2026-05-adobe-connect-deserialization/"}],"language":"en","title":"CraftedSignal Threat Feed — Cve-2026-34659","version":"https://jsonfeed.org/version/1.1"}