{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-32177/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[{"cvss":7.3,"id":"CVE-2026-32177"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":[".NET"],"_cs_severities":["high"],"_cs_tags":["cve-2026-32177","heap-based buffer overflow","privilege escalation",".net"],"_cs_type":"advisory","_cs_vendors":["Microsoft"],"content_html":"\u003cp\u003eCVE-2026-32177 describes a heap-based buffer overflow vulnerability found in .NET. The vulnerability could allow an attacker with local access to elevate their privileges on the system. Successful exploitation of this vulnerability could lead to unauthorized access to sensitive data or the ability to execute arbitrary code with elevated privileges. The vulnerability was reported to Microsoft and assigned a CVSS v3.1 base score of 7.3 (HIGH). Defenders should prioritize patching .NET installations to mitigate the risk of potential exploitation. Due to the nature of heap overflows, exploitation is likely to be application-specific, meaning generic exploit code is unlikely to work across all .NET applications.\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 system running a vulnerable .NET application.\u003c/li\u003e\n\u003cli\u003eThe attacker identifies a .NET application susceptible to a heap-based buffer overflow.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious input specifically designed to trigger the buffer overflow condition.\u003c/li\u003e\n\u003cli\u003eThe malicious input is sent to the vulnerable function within the .NET application.\u003c/li\u003e\n\u003cli\u003eThe heap buffer overflows, overwriting adjacent memory regions.\u003c/li\u003e\n\u003cli\u003eThe attacker manipulates the overwritten memory to gain control of program execution.\u003c/li\u003e\n\u003cli\u003eThe attacker leverages the elevated privileges gained to access sensitive data or execute arbitrary code.\u003c/li\u003e\n\u003cli\u003eThe attacker establishes persistence or performs other malicious activities.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-32177 allows an attacker to elevate their privileges on a local system. This could allow the attacker to gain unauthorized access to sensitive data, modify system configurations, or install malicious software. The vulnerability poses a significant risk to systems running vulnerable .NET applications, potentially leading to data breaches, system compromise, and financial losses.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eApply the security update provided by Microsoft to patch CVE-2026-32177 in .NET. Refer to the Microsoft Security Response Center (MSRC) advisory (\u003ca href=\"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32177\"\u003ehttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32177\u003c/a\u003e).\u003c/li\u003e\n\u003cli\u003eImplement input validation and sanitization measures in .NET applications to prevent buffer overflows, as suggested by CWE-20 (Improper Input Validation).\u003c/li\u003e\n\u003cli\u003eEnable process creation logging and monitor for unexpected processes spawned by .NET applications after applying the patch to detect potential exploitation attempts.\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rule to detect potential exploitation attempts by monitoring for abnormal .NET process behavior.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-12T18:18:15Z","date_published":"2026-05-12T18:18:15Z","id":"https://feed.craftedsignal.io/briefs/2026-05-cve-2026-32177-net-heap-overflow/","summary":"A heap-based buffer overflow vulnerability, identified as CVE-2026-32177, exists in .NET, potentially allowing an unauthorized attacker to elevate privileges locally.","title":"CVE-2026-32177: .NET Heap-Based Buffer Overflow Local Privilege Escalation","url":"https://feed.craftedsignal.io/briefs/2026-05-cve-2026-32177-net-heap-overflow/"}],"language":"en","title":"CraftedSignal Threat Feed — Cve-2026-32177","version":"https://jsonfeed.org/version/1.1"}