{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/res/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[{"cvss":8.8,"id":"CVE-2026-5707"}],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["critical"],"_cs_tags":["cve","command-injection","aws","res"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eCVE-2026-5707 is an OS command injection vulnerability affecting AWS Research and Engineering Studio (RES) versions 2025.03 through 2025.12.01. The vulnerability resides in the virtual desktop session name handling, where user-supplied input is not properly sanitized before being used in an OS command. A remote, authenticated attacker can exploit this flaw by providing a specially crafted session name, leading to arbitrary command execution as root on the virtual desktop host. Successful exploitation allows the attacker to gain full control over the affected host, potentially compromising sensitive data and disrupting services. Users are advised to upgrade to RES version 2026.03 or apply the corresponding mitigation patch to their existing environment. The vulnerability was reported on April 6, 2026.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eThe attacker authenticates to the AWS RES environment with valid credentials.\u003c/li\u003e\n\u003cli\u003eThe attacker initiates a request to create a new virtual desktop session.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious session name containing OS command injection payload.\u003c/li\u003e\n\u003cli\u003eThe malicious session name is passed to the vulnerable function in AWS RES without proper sanitization.\u003c/li\u003e\n\u003cli\u003eThe vulnerable function executes an OS command, incorporating the unsanitized session name.\u003c/li\u003e\n\u003cli\u003eThe injected command within the session name is executed with root privileges on the virtual desktop host.\u003c/li\u003e\n\u003cli\u003eThe attacker gains arbitrary command execution, allowing them to install malware, create new users, or modify system configurations.\u003c/li\u003e\n\u003cli\u003eThe attacker achieves complete control of the virtual desktop host.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-5707 allows a remote attacker to execute arbitrary commands with root privileges on the virtual desktop host. This can lead to a complete compromise of the system, potentially affecting all users and data within the AWS RES environment. The attacker can steal sensitive information, install persistent backdoors, or disrupt critical services. The exact number of potential victims is unknown, but any organization utilizing vulnerable versions of AWS RES is at risk.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eImmediately upgrade AWS Research and Engineering Studio (RES) to version 2026.03 or apply the recommended mitigation patch to address CVE-2026-5707.\u003c/li\u003e\n\u003cli\u003eImplement input validation and sanitization for all user-supplied data, especially session names, to prevent OS command injection vulnerabilities.\u003c/li\u003e\n\u003cli\u003eMonitor AWS RES logs for suspicious activity related to session creation and command execution on the virtual desktop hosts.\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rule \u0026ldquo;Detect Suspicious Session Names with OS Command Injection Characters\u0026rdquo; to identify potential exploitation attempts.\u003c/li\u003e\n\u003cli\u003eReview and harden the security configurations of the virtual desktop hosts to limit the impact of potential command execution.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-06T22:16:25Z","date_published":"2026-04-06T22:16:25Z","id":"/briefs/2026-04-aws-res-cmd-injection/","summary":"A remote authenticated attacker can execute arbitrary commands as root on the virtual desktop host by crafting a malicious session name in AWS Research and Engineering Studio (RES) versions 2025.03 through 2025.12.01 due to unsanitized input, leading to complete system compromise.","title":"AWS Research and Engineering Studio OS Command Injection Vulnerability (CVE-2026-5707)","url":"https://feed.craftedsignal.io/briefs/2026-04-aws-res-cmd-injection/"},{"_cs_actors":[],"_cs_cves":[{"cvss":8.8,"id":"CVE-2026-5709"}],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["critical"],"_cs_tags":["cve-2026-5709","rce","aws","res"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eCVE-2026-5709 affects AWS Research and Engineering Studio (RES), a cloud-based platform for research and engineering workflows. The vulnerability resides in the FileBrowser API and is present in versions 2024.10 through 2025.12.01. An authenticated attacker can exploit this vulnerability by sending crafted input to the FileBrowser functionality, leading to arbitrary command execution on the underlying cluster-manager EC2 instance. This could allow attackers to gain complete control over the RES environment, potentially compromising sensitive data and disrupting critical research activities. AWS recommends that users upgrade to RES version 2026.03 or apply a mitigation patch.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAn attacker gains valid credentials for an AWS Research and Engineering Studio (RES) account.\u003c/li\u003e\n\u003cli\u003eThe attacker authenticates to the RES environment.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts malicious input designed to exploit the unsanitized input vulnerability in the FileBrowser API.\u003c/li\u003e\n\u003cli\u003eThe attacker sends the crafted input to the FileBrowser API endpoint.\u003c/li\u003e\n\u003cli\u003eThe FileBrowser API processes the input without proper sanitization.\u003c/li\u003e\n\u003cli\u003eThe unsanitized input is executed as an operating system command on the cluster-manager EC2 instance.\u003c/li\u003e\n\u003cli\u003eThe attacker achieves arbitrary command execution, potentially installing malware, exfiltrating data, or creating new administrative accounts.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-5709 grants the attacker the ability to execute arbitrary commands on the cluster-manager EC2 instance within the AWS Research and Engineering Studio (RES) environment. This can lead to complete compromise of the RES environment, data theft, denial of service, and potential lateral movement to other AWS resources. Due to the nature of research environments, this vulnerability could expose highly sensitive data, intellectual property, and research findings. The impact is significant due to the potential for widespread damage and disruption of critical research activities.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eImmediately upgrade AWS Research and Engineering Studio (RES) to version 2026.03 or apply the recommended mitigation patch provided by AWS to remediate CVE-2026-5709.\u003c/li\u003e\n\u003cli\u003eImplement the Sigma rule \u0026ldquo;Detect Suspicious FileBrowser API Requests\u0026rdquo; to identify potential exploitation attempts targeting the FileBrowser API.\u003c/li\u003e\n\u003cli\u003eMonitor web server logs for suspicious activity related to the FileBrowser API endpoint, looking for unusual characters or command injection attempts.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-06T22:16:25Z","date_published":"2026-04-06T22:16:25Z","id":"/briefs/2026-04-aws-res-rce/","summary":"CVE-2026-5709 is a critical vulnerability in AWS Research and Engineering Studio (RES) versions 2024.10 through 2025.12.01, allowing remote authenticated attackers to execute arbitrary commands on the cluster-manager EC2 instance through the FileBrowser API.","title":"AWS Research and Engineering Studio (RES) RCE via FileBrowser API Vulnerability","url":"https://feed.craftedsignal.io/briefs/2026-04-aws-res-rce/"}],"language":"en","title":"CraftedSignal Threat Feed — Res","version":"https://jsonfeed.org/version/1.1"}