CVE-2026-2459 is a high-severity vulnerability affecting Hitachi Energy REB500 and its firmware, allowing an authenticated user with the Installer role to access and modify unauthorized directories. This vulnerability has a CVSS score of 8.1, indicating a high impact on confidentiality and integrity, as it can be exploited remotely with low attack complexity and no user interaction required. While there is no known active exploitation, publicly available exploit code, or KEV listing, the vulnerability has garnered some community discussion and media coverage, including a CISA alert.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 8.3.3.0CPE matchmatch criteria | cpe:2.3:o:hitachienergy:reb500_firmware:*:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.