CVE-2026-77120

Root privilege escalation via console command injection

Published Sep 9, 2026 · Updated Sep 9, 2026

OS command injection in Schneider Electric PowerLogic T300 2.9.8-5620 and earlier allows local users to gain root privileges. The HU250 operating-system console passes user-controlled input to an OS command without neutralizing command metacharacters. Reachability requires an authenticated account with SSH enabled and OS_SHELL permission; successful exploitation permits device takeover and administrative actions.

CVSS severity8.7
High
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

OS command injection in Schneider Electric PowerLogic T300 2.9.8-5620 and earlier allows local users to gain root privileges. The HU250 operating-system console passes user-controlled input to an OS command without neutralizing command metacharacters. Reachability requires an authenticated account with SSH enabled and OS_SHELL permission; successful exploitation permits device takeover and administrative actions.

The record

CVE
CVE-2026-77120
Published
Sep 9, 2026
Updated
Sep 9, 2026
Vendor
Distributed Data Systems
Product
PowerLogic T300
Classifications
CWE-78, T1059
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Sep 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Versions 2.9.8-5620 and prior

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Distributed Data Systems · PowerLogic T300version=Versions 2.9.8-5620 and prior

Published CVSS scores

8.2Schneider Electric CPCERTCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
8.7Schneider Electric CNACVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo