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vulnerabilities
Hitachi Energy e-mesh EMS
Hitachi Energy has disclosed a heap-based buffer overflow vulnerability (CVE-2026-42945) in its e-mesh EMS product versions 4.1.6, 4.4.2, and 4.7.0, caused by an NGINX module flaw. The vulnerability, with a CVSS 3.1 score of 8.1, could allow unauthenticated attackers to cause denial of service or execute arbitrary code by sending crafted HTTP requests, particularly on systems without Address Space Layout Randomization (ASLR) enabled. Hitachi Energy recommends applying hotfixes to update NGINX to version 1.30.2 or later, and has provided interim mitigations including configuration changes and operating system upgrades.
Why it matters: Energy sector organizations operating e-mesh EMS 4.1.6, 4.4.2, or 4.7.0 globally should immediately apply NGINX hotfixes or implement mitigations to prevent denial of service or code execution against critical infrastructure.
- Source published
- First seen by Cybersecurity Tracker
Source attribution
Correction
Correction recorded as of .
vulnerabilities
Hitachi Energy e-mesh EMS
Hitachi Energy has disclosed CVE-2026-42945, a heap-based buffer overflow in the NGINX module used by e-mesh EMS versions 4.1.6, 4.4.2, and 4.7.0. The vulnerability, scoring 9.2 on CVSS v4.0, can be triggered by malicious HTTP requests containing unnamed regular expression captures with question marks in rewrite directives, potentially causing application crashes or remote code execution on systems without Address Space Layout Randomization (ASLR) protection. Hitachi Energy recommends applying hotfixes to upgrade NGINX to v1.30.2 or later, ensuring ASLR is enabled, and upgrading underlying Ubuntu servers from the end-of-life version 20.04 LTS.
Why it matters: Energy sector operators worldwide running affected e-mesh EMS versions face denial of service and potential compromise from unauthenticated network attacks; immediate patching and ASLR validation are critical controls.
- Source published
- First seen by Cybersecurity Tracker
Source attribution
Correction
Correction recorded as of .
vulnerabilities
Hitachi Energy e-mesh EMS
Hitachi Energy has disclosed CVE-2026-42945, a heap-based buffer overflow in the NGINX module used by e-mesh EMS versions 4.1.6, 4.4.2, and 4.7.0. The vulnerability, scoring 9.2 on CVSS v4.0, can be triggered by malicious HTTP requests containing unnamed regular expression captures with question marks in rewrite directives, potentially causing application crashes or remote code execution on systems without Address Space Layout Randomization (ASLR) protection. Hitachi Energy recommends applying hotfixes to upgrade NGINX to v1.30.2 or later, ensuring ASLR is enabled, and upgrading underlying Ubuntu servers from the end-of-life version 20.04 LTS.
Why it matters: Energy sector operators worldwide running affected e-mesh EMS versions face denial of service and potential compromise from unauthenticated network attacks; immediate patching and ASLR validation are critical controls.
- Source published
- First seen by Cybersecurity Tracker