Ethical Hacking News
F5, a leading security and application delivery firm, has addressed critical Remote Code Execution (RCE) flaws in NGINX, a popular web server software. These vulnerabilities, rated with a Critical Security Vulnerability Severity Level (CVSS score) of 9.2, could be exploited without authentication, allowing an attacker to trigger a denial-of-service condition or potentially execute arbitrary code. F5 has released patches for all these vulnerabilities, which are available for download on the official F5 website. It is essential for users of NGINX to apply these patches as soon as possible to prevent potential exploitation of these vulnerabilities.
F5 has released patches for eleven security issues in NGINX, including critical Remote Code Execution (RCE) flaws.The critical RCE flaws, CVE-2026-15176 and CVE-2026-93479, have a CVSS score of 9.2 and can be exploited without authentication.The vulnerabilities were addressed by F5 for NGINX Plus and NGINX Open Source.A use-after-free vulnerability, CVE-2026-97205, has also been patched, which can cause memory corruption or unexpected worker process termination.Users of NGINX are advised to apply the patches as soon as possible to prevent potential exploitation.
F5, a leading security and application delivery firm, has announced the release of patches for eleven security issues in NGINX, a popular web server software. Among these vulnerabilities, critical Remote Code Execution (RCE) flaws, tracked as CVE-2026-15176 and CVE-2026-93479, were identified. These vulnerabilities, rated with a Critical Security Vulnerability Severity Level (CVSS score) of 9.2, could be exploited without authentication, allowing an attacker to trigger a denial-of-service condition or potentially execute arbitrary code by sending crafted HTTP requests.
The vulnerability CVE-2026-15176 occurs under specific configurations involving the alias directive and the request_filename variable. Remote code execution may be possible if ASLR (Address Space Layout Randomization) is disabled or bypassed. This vulnerability affects NGINX Plus and NGINX Open Source.
The vulnerability CVE-2026-93479 occurs under specific configurations where regular-expression capture variables from the map directive are referenced before the map output variable, or where a non-cacheable variable is used in a string expression under certain conditions. Remote code execution may be possible if ASLR is disabled or bypassed. This vulnerability also affects NGINX Plus and NGINX Open Source.
In addition to these critical RCE flaws, F5 has also addressed a use-after-free vulnerability in NGINX, tracked as CVE-2026-97205, which has a CVSS score of 9.2. This vulnerability occurs under certain configurations with asynchronous file I/O (AIO) enabled and may cause memory corruption or unexpected worker process termination when processing Server Side Includes (SSI) pages containing include virtual commands. A remote attacker could exploit this flaw to cause a denial-of-service (DoS) or potentially execute code, particularly when ASLR is disabled or can be bypassed.
F5 has released patches for all these vulnerabilities, which are available for download on the official F5 website. It is essential for users of NGINX to apply these patches as soon as possible to prevent potential exploitation of these vulnerabilities.
These critical RCE flaws in NGINX highlight the importance of keeping software up-to-date and applying patches promptly. This is especially crucial for organizations that rely on NGINX for their web servers and applications. The fact that these vulnerabilities were discovered and patched by F5 demonstrates the company's commitment to addressing security issues and ensuring the security of its customers' applications.
In conclusion, F5's recent announcement of patches for eleven security issues in NGINX serves as a reminder of the importance of prioritizing security in software development and maintenance. By addressing these critical vulnerabilities, F5 has taken a significant step towards ensuring the security of its customers' applications and preventing potential exploits of these flaws.
Related Information:
https://www.ethicalhackingnews.com/articles/F5-Addresses-Critical-RCE-Flaws-in-NGINX-Patches-Eleven-Security-Issues-ehn.shtml
https://securityaffairs.com/201106/security/f5-addressed-critical-rce-flaws-in-nginx.html
https://nvd.nist.gov/vuln/detail/CVE-2026-15176
https://www.cvedetails.com/cve/CVE-2026-15176/
https://nvd.nist.gov/vuln/detail/CVE-2026-93479
https://www.cvedetails.com/cve/CVE-2026-93479/
https://nvd.nist.gov/vuln/detail/CVE-2026-97205
https://www.cvedetails.com/cve/CVE-2026-97205/
Published: Fri Oct 16 10:34:57 2026 by llama3.2 3B Q4_K_M
