Hitachi Energy APM Edge Product
TL;DR
View CSAF Summary Hitachi Energy is aware of Dirty Frag vulnerabilities that affect APM Edge product versions listed in this document. Successful exploitation of these vulnerabilities could result in impact on confidentiality, integrity and availability of the product. Please refer to the Recommended Immediate Actions for information about the mitigation/remediation. The following versions of Hitachi Energy APM Edge Product are affected: APM Edge vers:APM_Edge/<=6.10 (CVE-2026-43284, CVE-2026-43500) CVSS Vendor Equipment Vulnerabilities
v3 8.8 Hitachi Energy Hitachi Energy APM Edge Product Write-what-where Condition, Out-of-bounds Write
Background Critical Infrastructure Sectors: Energy Countries/Areas Deployed: Worldwide Company Headquarters Location: Switzerland Vulnerabilities Expand All + CVE-2026-43284 CWE-123: Write-what-where Condition A vulnerability exists in the IPsec ESP subsystem (esp4, esp6) of the Linux kernel used in APM Edge that allows a local unprivileged user to escalate privileges to root. The flaw exists in how the kernel handles memory pages when processing ESP encrypted network packets. An attacker can craft a packet that causes the kernel to decrypt data directly into memory pages it does not own, including the cached copies of privileged operating system binaries. When one of those binaries is executed, the attacker's injected code runs with root privileges. In APM Edge, the vulnerable kernel modules (esp4, esp6) can be loaded by any local user and exploited. View CVE Details Affected Products Hitachi Energy APM Edge Product Vendor: Hitachi Energy Product Version: APM Edge versions 6.10 and prior Product Status: known_affected Remediations Mitigation Disable the esp4 and esp6 modules [2] Relevant CWE: CWE-123 Write-what-where Condition Metrics CVSS Version Base Score Base Severity Vector String
3.1 8.8 HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVE-2026-43500 CWE-787: Out-of-bounds Write A vulnerability exists in th
What Happened
Hitachi Energy APM Edge Product, reported by CISA.
View CSAF Summary Hitachi Energy is aware of Dirty Frag vulnerabilities that affect APM Edge product versions listed in this document. Successful exploitation of these vulnerabilities could result in impact on confidentiality, integrity and availability of the product. Please refer to the Recommended Immediate Actions for information about the mitigation/remediation. The following versions of Hitachi Energy APM Edge Product are affected: APM Edge vers:APM_Edge/<=6.10 (CVE-2026-43284, CVE-2026-43500) CVSS Vendor Equipment Vulnerabilities
v3 8.8 Hitachi Energy Hitachi Energy APM Edge Product Write-what-where Condition, Out-of-bounds Write
Background Critical Infrastructure Sectors: Energy Countries/Areas Deployed: Worldwide Company Headquarters Location: Switzerland Vulnerabilities Expand All + CVE-2026-43284 CWE-123: Write-what-where Condition A vulnerability exists in the IPsec ESP subsystem (esp4, esp6) of the Linux kernel used in APM Edge that allows a local unprivileged user to escalate privileges to root. The flaw exists in how the kernel handles memory pages when processing ESP encrypted network packets. An attacker can craft a packet that causes the kernel to decrypt data directly into memory pages it does not own, including the cached copies of privileged operating system binaries. When one of those binaries is executed, the attacker's injected code runs with root privileges. In APM Edge, the vulnerable kernel modules (esp4, esp6) can be loaded by any local user and exploited. View CVE Details Affected Products Hitachi Energy APM Edge Product Vendor: Hitachi Energy Product Version: APM Edge versions 6.10 and prior Product Status: known_affected Remediations Mitigation Disable the esp4 and esp6 modules [2] Relevant CWE: CWE-123 Write-what-where Condition Metrics CVSS Version Base Score Base Severity Vector String
3.1 8.8 HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVE-2026-43500 CWE-787: Out-of-bounds Write A vulnerability exists in th
For the full technical details, see the original report.
Why It Matters for Businesses
This development could affect organizations that rely on the impacted technologies or services. Unpatched systems, misconfigured infrastructure, or lack of monitoring can leave businesses exposed to exploitation, data breaches, and regulatory penalties.
How to Check Your Exposure
Run a free scan on NEL Professional's Cyber Risk Scanner to check whether your domain is affected. The scan covers SSL/TLS, security headers, DNS configuration, email authentication, and more across 16 modules.
Mitigation Steps
- Patch immediately, Apply vendor patches or updates as soon as they are available.
- Review configurations, Check firewall rules, access controls, and security headers.
- Monitor logs, Watch for indicators of compromise (IOCs) related to this threat.
- Update security policies, Ensure incident response plans cover this type of threat.
- Run a security scan, Use automated tools to verify your exposure.
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