{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-34640/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[{"cvss":7.8,"id":"CVE-2026-34640"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["Media Encoder (\u003c= 26.0.2)"],"_cs_severities":["high"],"_cs_tags":["cve-2026-34640","integer_overflow","code_execution"],"_cs_type":"advisory","_cs_vendors":["Adobe"],"content_html":"\u003cp\u003eAdobe Media Encoder versions up to 26.0.2 and 25.6.4 are vulnerable to an integer overflow or wraparound, as identified by CVE-2026-34640. This vulnerability can be exploited if a user opens a specially crafted malicious file designed to trigger the overflow, which could then allow the attacker to execute arbitrary code with the privileges of the current user. The attacker must rely on social engineering to get the victim to open the malicious file. Given the potential for arbitrary code execution, successful exploitation can lead to complete system compromise.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker crafts a malicious media file designed to trigger an integer overflow during processing.\u003c/li\u003e\n\u003cli\u003eThe attacker uses social engineering to convince the victim to open the malicious media file.\u003c/li\u003e\n\u003cli\u003eThe victim opens the file with a vulnerable version of Adobe Media Encoder.\u003c/li\u003e\n\u003cli\u003eDuring the decoding process, the integer overflow occurs when the application processes specific parameters of the malformed media file.\u003c/li\u003e\n\u003cli\u003eThe integer overflow leads to a buffer overflow.\u003c/li\u003e\n\u003cli\u003eThe buffer overflow allows the attacker to overwrite parts of the program\u0026rsquo;s memory.\u003c/li\u003e\n\u003cli\u003eThe attacker injects malicious code into the memory space.\u003c/li\u003e\n\u003cli\u003eThe injected code executes, granting the attacker arbitrary code execution within the context of the user.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-34640 allows an attacker to execute arbitrary code on the victim\u0026rsquo;s system with the privileges of the current user. This can lead to sensitive data theft, malware installation, or complete system compromise. The impact is high due to the potential for full control over the affected system.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUpgrade to the latest version of Adobe Media Encoder to patch CVE-2026-34640.\u003c/li\u003e\n\u003cli\u003eEducate users on the risks of opening unsolicited or untrusted media files to mitigate the initial attack vector.\u003c/li\u003e\n\u003cli\u003eImplement the provided Sigma rule to detect suspicious process execution following Adobe Media Encoder activity.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-12T18:26:37Z","date_published":"2026-05-12T18:26:37Z","id":"https://feed.craftedsignal.io/briefs/2026-05-cve-2026-34640-media-encoder-integer-overflow/","summary":"Adobe Media Encoder versions 26.0.2, 25.6.4 and earlier are susceptible to an integer overflow or wraparound vulnerability (CVE-2026-34640) that could lead to arbitrary code execution when a user opens a malicious file.","title":"Adobe Media Encoder Integer Overflow Vulnerability (CVE-2026-34640)","url":"https://feed.craftedsignal.io/briefs/2026-05-cve-2026-34640-media-encoder-integer-overflow/"}],"language":"en","title":"CraftedSignal Threat Feed — Cve-2026-34640","version":"https://jsonfeed.org/version/1.1"}