{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-41957/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[{"cvss":8.8,"id":"CVE-2026-41957"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["BIG-IP","BIG-IQ"],"_cs_severities":["high"],"_cs_tags":["cve-2026-41957","rce","f5","big-ip","big-iq","authenticated","deserialization"],"_cs_type":"advisory","_cs_vendors":["F5 Networks"],"content_html":"\u003cp\u003eCVE-2026-41957 describes an authenticated remote code execution (RCE) vulnerability affecting the F5 BIG-IP and BIG-IQ Configuration utility. The specific attack vectors remain undisclosed. An attacker with valid credentials could exploit this vulnerability to execute arbitrary code on the target system. Given the critical role of BIG-IP and BIG-IQ in network infrastructure, successful exploitation can lead to significant disruption, data breaches, and further lateral movement within the network. Software versions which have reached End of Technical Support (EoTS) are not evaluated for this vulnerability.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker gains valid credentials to access the BIG-IP or BIG-IQ Configuration utility.\u003c/li\u003e\n\u003cli\u003eAttacker authenticates to the Configuration utility using the acquired credentials.\u003c/li\u003e\n\u003cli\u003eAttacker crafts a malicious request targeting the undisclosed vulnerable component within the Configuration utility.\u003c/li\u003e\n\u003cli\u003eThe malicious request triggers deserialization of untrusted data (CWE-502).\u003c/li\u003e\n\u003cli\u003eThe deserialization process leads to the execution of arbitrary code on the system.\u003c/li\u003e\n\u003cli\u003eAttacker establishes a reverse shell or other remote access mechanism.\u003c/li\u003e\n\u003cli\u003eAttacker performs post-exploitation activities, such as gathering sensitive information or moving laterally within the network.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-41957 can allow an authenticated attacker to execute arbitrary code on the affected BIG-IP or BIG-IQ system. This can lead to complete system compromise, allowing attackers to steal sensitive data, disrupt network services, and potentially pivot to other systems within the network. Given the central role of F5 products in many organizations\u0026rsquo; network infrastructure, the impact of this vulnerability could be significant.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eApply the security updates released by F5 Networks to patch CVE-2026-41957 as soon as possible. Refer to F5\u0026rsquo;s advisory \u003ca href=\"https://my.f5.com/manage/s/article/K000156761\"\u003ehttps://my.f5.com/manage/s/article/K000156761\u003c/a\u003e for specific details and affected versions.\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rule \u0026ldquo;Detects CVE-2026-41957 Exploitation Attempt — Suspicious URI Access\u0026rdquo; to monitor web server logs for potential exploitation attempts.\u003c/li\u003e\n\u003cli\u003eImplement strong password policies and multi-factor authentication to reduce the risk of credential compromise, mitigating the initial access vector required to exploit CVE-2026-41957.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-13T16:25:07Z","date_published":"2026-05-13T16:25:07Z","id":"https://feed.craftedsignal.io/briefs/2026-05-cve-2026-41957-rce/","summary":"An authenticated remote code execution vulnerability (CVE-2026-41957) exists in the F5 BIG-IP and BIG-IQ Configuration utility, potentially leading to arbitrary code execution on affected systems.","title":"CVE-2026-41957: F5 BIG-IP and BIG-IQ Authenticated Remote Code Execution Vulnerability","url":"https://feed.craftedsignal.io/briefs/2026-05-cve-2026-41957-rce/"}],"language":"en","title":"CraftedSignal Threat Feed — Cve-2026-41957","version":"https://jsonfeed.org/version/1.1"}