CVE-2026-2459Disclosure(hitachienergy / reb500)

LOWCVSS 8.1 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

A vulnerability exists in REB500 for an authenticated user with Installer role to access and alter the contents of directories that the role is not authorized to do so.

hitachienergy CVEs Back to dashboard

0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories

https://publisher.hitachienergy.com/preview?DocumentID=8DBD000217&LanguageCode=en&DocumentPartId=&Action=Launch

Weakness type (CWE)

CWE-267

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

reb500
reb500_firmware

Threat summary

5 mentions across 3 observed days
Momentum state: stable

What's happening

Technical details provided in 5 signals
Disclosure: 5 classified signals
Peaked 1d ago at 3 mentions (2026-02-28); latest day: 1
5 total mentions across 3 days

Affected systems

Vendors

hitachienergy

Products

reb500reb500_firmware

1 version affected across 2 products

Deep dive

Activity timeline5 mentions / 3d

Signal classification1 categories

Disclosure

5100.0%

Referenced assets4 URLs

By indicator

Classification over time

Date	Total	Labels

2026-02-26	1	Disclosure1
2026-02-28	3	Disclosure3
2026-03-01	1	Disclosure1

Full discourse5 posts

CRAC Learning - Tech@cracbot221d
Disclosure
CVE-2026-2459 (CVSS:7.4, HIGH) is Undergoing Analysis. A vulnerability exists in REB500 for an authenticated user with Installer role to access and alter the contents of direc..https://nvd.nist.gov/vuln/detail/CVE-2026-2459 #cybersecurityawareness #cybersecurity #CVE #infosec #hacker #nvd #mitre
Post summary
The post announces CVE-2026-2459, a high‑severity vulnerability in REB500 that allows authenticated Installer users to read and modify directory contents, with CVSS 7.4, but no PoC, exploit, or patch details are provided.
0000023
173 followersView on X
Infoflowcloud@infoflowcloud222d
Disclosure
🚨*CVE* CVE-2026-2459 A vulnerability exists in REB500 for an authenticated user with Installer role to access and alter the contents of directories that the role is not authorized to do so. https://www.cve.org/CVERecord?id=CVE-2026-2459 ----- Traducción: CVE-2026-2459 Exist… http://infoflow.cloud`
Post summary
The post announces CVE-2026-2459, describing a privilege escalation flaw in REB500 that allows Installer role users to modify unauthorized directories, with a link to the CVE record.
0000041
55 followersView on X
CVE@CVEnew222d
Disclosure
CVE-2026-2459 A vulnerability exists in REB500 for an authenticated user with Installer role to access and alter the contents of directories that the role is not authorized to do so. https://www.cve.org/CVERecord?id=CVE-2026-2459
Post summary
CVE-2026-2459 exposes a privilege escalation flaw in REB500, allowing authenticated Installer‑role users to read and modify directories beyond their authorized scope.
00000430
56.6K followersView on X
CRAC Learning - Tech@cracbot222d
Disclosure
CVE-2026-2459 (CVSS:7.4, HIGH) is Undergoing Analysis. A vulnerability exists in REB500 for an authenticated user with Installer role to access and alter the contents of direc..https://nvd.nist.gov/vuln/detail/CVE-2026-2459 #cybersecurityawareness #cybersecurity #CVE #infosec #hacker #nvd #mitre
Post summary
The tweet announces CVE‑2026‑2459 affecting REB500, noting that an authenticated Installer role can modify directory contents. No proof of concept, exploit code, or patch is referenced.
0000032
173 followersView on X
The Hacker Wire@TheHackerWire224d
Disclosure
🟠 CVE-2026-2459 - High A vulnerability exists in REB500 for an authenticated user with Installer role to access and alter the contents of directories that the role is not authorized to do so. https://www.thehackerwire.com/vulnerability/CVE-2026-2459/ https://t.co/CenkS4JPzP
Post summary
A high severity vulnerability in REB500 allows authenticated users with the Installer role to access and modify directories they are not authorized to, indicating a privilege escalation flaw.
0000038
119 followersView on X

CPE platform detail2 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

2 of 2 entries

Part	Vendor	Product	Version	Target SW	Target HW
HW	hitachienergy	reb500	-	-	-
OS	hitachienergy	reb500_firmware	-	-	-

Explore more

Back to dashboard hitachienergy CVEs reb500 vulnerabilities

What researchers are saying

CVE-2026-2459

CRAC Learning - Tech@cracbotDisclosure

The post announces CVE-2026-2459, a high‑severity vulnerability in REB500 that allows authenticated Installer users to read and modify directory contents, with CVSS 7.4, but no PoC, exploit, or patch details are provided.

Infoflowcloud@infoflowcloudDisclosure

The post announces CVE-2026-2459, describing a privilege escalation flaw in REB500 that allows Installer role users to modify unauthorized directories, with a link to the CVE record.

CVE@CVEnewDisclosure

CVE-2026-2459 exposes a privilege escalation flaw in REB500, allowing authenticated Installer‑role users to read and modify directories beyond their authorized scope.

CRAC Learning - Tech@cracbotDisclosure

The tweet announces CVE‑2026‑2459 affecting REB500, noting that an authenticated Installer role can modify directory contents. No proof of concept, exploit code, or patch is referenced.

The Hacker Wire@TheHackerWireDisclosure

A high severity vulnerability in REB500 allows authenticated users with the Installer role to access and modify directories they are not authorized to, indicating a privilege escalation flaw.