{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/products/libc/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[{"cvss":6.7,"id":"CVE-2026-4878"},{"cvss":3.3,"id":"CVE-2026-6042"},{"cvss":8.1,"id":"CVE-2026-40200"},{"id":"CVE-2026-29013"},{"cvss":7.8,"id":"CVE-2026-31580"}],"_cs_exploited":false,"_cs_products":["libc"],"_cs_severities":["medium"],"_cs_tags":["vulnerability","glibc","denial-of-service","code-execution"],"_cs_type":"advisory","_cs_vendors":["GNU"],"content_html":"\u003cp\u003eMultiple vulnerabilities exist within the GNU C Library (libc) that could be exploited by a remote, anonymous attacker. While the specifics of these vulnerabilities are not detailed in this advisory, successful exploitation could lead to several critical outcomes, including the execution of arbitrary program code, the initiation of a denial-of-service (DoS) condition, or the unauthorized disclosure of sensitive information. As the GNU C Library is a fundamental component of many systems, these vulnerabilities pose a widespread risk. Defenders need to implement robust monitoring and patching strategies to mitigate potential threats.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eThe attacker identifies a vulnerable service or application that uses GNU libc.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious input specifically designed to exploit a vulnerability in GNU libc.\u003c/li\u003e\n\u003cli\u003eThe attacker sends the malicious input to the vulnerable service or application, potentially over a network connection.\u003c/li\u003e\n\u003cli\u003eThe vulnerable service processes the malicious input, triggering the vulnerability within GNU libc.\u003c/li\u003e\n\u003cli\u003eIf successful, the attacker gains the ability to execute arbitrary code within the context of the compromised process.\u003c/li\u003e\n\u003cli\u003eAlternatively, the vulnerability leads to a denial-of-service condition, causing the application or service to crash or become unresponsive.\u003c/li\u003e\n\u003cli\u003eAs another potential outcome, sensitive information residing in memory is disclosed to the attacker.\u003c/li\u003e\n\u003cli\u003eThe attacker leverages code execution, denial-of-service, or information disclosure to further compromise the system or network.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of these vulnerabilities in GNU libc could have significant consequences, depending on the targeted application and the privileges of the compromised process. Arbitrary code execution could allow the attacker to install malware, steal data, or pivot to other systems on the network. A denial-of-service condition could disrupt critical services, leading to business interruption and financial losses. Sensitive information disclosure could expose confidential data, leading to reputational damage and legal liabilities.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMonitor process execution for unexpected or unauthorized code execution, particularly involving processes that rely on GNU libc. Use process_creation rules to detect unusual child processes (see example rule below).\u003c/li\u003e\n\u003cli\u003eAnalyze network traffic for patterns indicative of denial-of-service attacks, such as large volumes of traffic or malformed packets. Examine firewall logs for suspicious activity.\u003c/li\u003e\n\u003cli\u003eImplement runtime application self-protection (RASP) solutions to detect and prevent exploitation attempts targeting GNU libc vulnerabilities, especially if patching is delayed.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-29T09:59:01Z","date_published":"2026-04-29T09:59:01Z","id":"/briefs/2026-04-gnu-libc-vulns/","summary":"A remote, anonymous attacker can exploit multiple vulnerabilities in GNU libc to execute arbitrary program code, cause a denial-of-service condition, or disclose sensitive information.","title":"Multiple Vulnerabilities in GNU libc","url":"https://feed.craftedsignal.io/briefs/2026-04-gnu-libc-vulns/"}],"language":"en","title":"CraftedSignal Threat Feed — Libc","version":"https://jsonfeed.org/version/1.1"}