{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-21382/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[{"cvss":7.8,"id":"CVE-2026-21382"}],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["high"],"_cs_tags":["cve-2026-21382","buffer-overflow","memory-corruption","qualcomm"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eCVE-2026-21382 describes a memory corruption vulnerability in Qualcomm products. The vulnerability stems from improper handling of power management requests with inadequately sized input/output buffers, which could lead to a buffer overflow (CWE-120). This vulnerability was reported by Qualcomm, Inc., and assigned a CVSS v3.1 score of 7.8. While the specific affected products are not detailed in the provided source, the advisory indicates it is part of the April 2026 Qualcomm security bulletin. Successful exploitation could lead to arbitrary code execution within the context of the affected power management component. Defenders should monitor for unusual activity related to power management processes and prioritize patching when updates become available.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAn attacker gains local access to a vulnerable Qualcomm device.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious power management request with an oversized input buffer.\u003c/li\u003e\n\u003cli\u003eThe crafted request is sent to the affected power management component.\u003c/li\u003e\n\u003cli\u003eThe component processes the request without properly validating the buffer size.\u003c/li\u003e\n\u003cli\u003eData from the oversized input buffer overflows into adjacent memory regions.\u003c/li\u003e\n\u003cli\u003eThe attacker overwrites critical data structures or executable code within memory.\u003c/li\u003e\n\u003cli\u003eThe system attempts to execute the corrupted code, leading to a crash or arbitrary code execution.\u003c/li\u003e\n\u003cli\u003eThe attacker gains control of the device or escalates privileges.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-21382 could allow an attacker to execute arbitrary code on a vulnerable Qualcomm device. Although the number of affected devices and specific sectors are not specified in the provided source, the impact of successful exploitation includes potential device compromise, data theft, or denial of service. Due to the high CVSS score, unpatched systems are at significant risk.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMonitor process creation events for power management-related processes spawning unexpected child processes, using a rule similar to the example below.\u003c/li\u003e\n\u003cli\u003eAnalyze network connections from power management-related processes for suspicious outbound traffic to unusual ports or IPs.\u003c/li\u003e\n\u003cli\u003eInvestigate any crashes or unexpected reboots on Qualcomm-based devices, correlating them with power management events in system logs.\u003c/li\u003e\n\u003cli\u003eMonitor for registry modifications made by power management processes, specifically those related to loading custom drivers or libraries.\u003c/li\u003e\n\u003cli\u003eReview and apply the security updates outlined in the Qualcomm security bulletin for April 2026 to patch CVE-2026-21382 (\u003ca href=\"https://docs.qualcomm.com/product/publicresources/securitybulletin/april-2026-bulletin.html\"\u003ehttps://docs.qualcomm.com/product/publicresources/securitybulletin/april-2026-bulletin.html\u003c/a\u003e).\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-06T16:16:31Z","date_published":"2026-04-06T16:16:31Z","id":"/briefs/2026-04-qualcomm-buffer-overflow/","summary":"CVE-2026-21382 is a memory corruption vulnerability related to handling power management requests with improperly sized input/output buffers, potentially leading to code execution.","title":"Qualcomm Memory Corruption Vulnerability CVE-2026-21382","url":"https://feed.craftedsignal.io/briefs/2026-04-qualcomm-buffer-overflow/"}],"language":"en","title":"CraftedSignal Threat Feed — Cve-2026-21382","version":"https://jsonfeed.org/version/1.1"}