{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/products/plc-fw/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[{"cvss":9.6,"id":"CVE-2026-25293"}],"_cs_exploited":false,"_cs_products":["PLC FW"],"_cs_severities":["critical"],"_cs_tags":["plc","buffer-overflow","industrial-control-systems","cve-2026-25293"],"_cs_type":"advisory","_cs_vendors":["Qualcomm"],"content_html":"\u003cp\u003eCVE-2026-25293 describes a buffer overflow vulnerability affecting Qualcomm\u0026rsquo;s Programmable Logic Controller Firmware (PLC FW).  The root cause is an incorrect authorization mechanism within the firmware. This flaw could allow an attacker to potentially overwrite memory buffers, leading to arbitrary code execution or denial of service. The vulnerability was disclosed in Qualcomm\u0026rsquo;s May 2026 security bulletin. Successful exploitation of this vulnerability could allow unauthorized modification of PLC configurations, potentially impacting industrial control systems and automation processes. The affected PLC FW is used in a range of industrial applications, increasing the scope and severity of this vulnerability.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker identifies a vulnerable PLC FW device on the network.\u003c/li\u003e\n\u003cli\u003eThe attacker leverages CVE-2026-25293 to bypass authorization checks.\u003c/li\u003e\n\u003cli\u003eA crafted network packet is sent to the PLC FW, exploiting the buffer overflow.\u003c/li\u003e\n\u003cli\u003eThe overflowed buffer overwrites critical memory regions.\u003c/li\u003e\n\u003cli\u003eAttacker gains control of PLC FW execution flow.\u003c/li\u003e\n\u003cli\u003eMalicious code is injected into the PLC memory space.\u003c/li\u003e\n\u003cli\u003eThe injected code executes, potentially modifying PLC logic or disrupting operations.\u003c/li\u003e\n\u003cli\u003eThe attacker achieves unauthorized control over the PLC, leading to disruption, data manipulation, or system compromise.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-25293 could allow attackers to gain complete control over Programmable Logic Controllers (PLCs). This could lead to significant disruptions in industrial control systems, manufacturing processes, and other automated systems. The vulnerability affects Qualcomm PLC FW, potentially impacting a large number of devices across various sectors. The high CVSS score of 9.6 reflects the critical impact of this vulnerability, including the potential for complete system compromise and denial of service.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eApply the security patches provided by Qualcomm as detailed in their May 2026 security bulletin (\u003ca href=\"https://docs.qualcomm.com/product/publicresources/securitybulletin/may-2026-bulletin.html\"\u003ehttps://docs.qualcomm.com/product/publicresources/securitybulletin/may-2026-bulletin.html\u003c/a\u003e) to remediate CVE-2026-25293.\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rule \u0026ldquo;Detect Suspicious Network Traffic to PLC Devices\u0026rdquo; to identify potential exploitation attempts.\u003c/li\u003e\n\u003cli\u003eImplement strict network segmentation to limit the attack surface and prevent lateral movement to PLC devices.\u003c/li\u003e\n\u003cli\u003eMonitor network traffic for unexpected patterns or unauthorized access attempts to PLC devices.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-04T17:16:22Z","date_published":"2026-05-04T17:16:22Z","id":"/briefs/2026-05-plc-buffer-overflow/","summary":"CVE-2026-25293 is a critical buffer overflow vulnerability in Qualcomm PLC FW due to incorrect authorization, potentially allowing unauthorized access and control over programmable logic controllers.","title":"Qualcomm PLC FW Buffer Overflow via Incorrect Authorization (CVE-2026-25293)","url":"https://feed.craftedsignal.io/briefs/2026-05-plc-buffer-overflow/"}],"language":"en","title":"CraftedSignal Threat Feed — PLC FW","version":"https://jsonfeed.org/version/1.1"}