CVE-2026-2460: hitachi energy relion reb500 Privilege Defined With Unsafe Actions
CVSS: 8.1v3.1HighAnalyzed
Published 24-02-2026Last modified 28-02-2026
Vulnerability summary
CVE-2026-2460 is a high (CVSS 8.1) Privilege Defined With Unsafe Actions vulnerability in hitachi energy relion reb500. EPSS estimates a 0.29% chance of exploitation in the next 30 days, higher than 20.9% of scored vulnerabilities.
CVSS score
8.1/10
010
High · v3.1 (NVD)EPSS score
0.29%
0%100%
Low · +0.02 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 24-02-2026PublishedVulnerability first disclosed.
- 28-02-2026Last modifiedVulnerability information updated.
Description
A vulnerability exists in REB500 for an authenticated user with low-level privileges to access and alter the content of directories by using the DAC protocol that the user is not authorized to do so.
CVSS metrics
3 scores · 2 sources · 2 versionsHigh 7.6Preferred score · CVE.org (CNA)
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:NSourcesAll 2 agree
- NVDNIST7.6HighCVSS:4.0/AV:N/AC:H/AT:N/PR:L/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
High 8.1Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:NSourcesSingle source
EPSS trend
Probability
0.29%
Chance of exploitation in the next 30 days
Percentile
21%
Versus all other CVEs
30-day change
+0.02 pp
From 0.28% on 21-09-2026
21-09-202621-10-2026
EPSS score0.29%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Hitachi energy1 product
- relion reb500≥ 8.0.0.0, ≤ 8.3.3.0
Hitachienergy1 product
- reb500_firmware< 8.3.3.1
2 vendors · 2 products
References
1 links- publisher.hitachienergy.com/previewVendor Advisory