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CVE-2026-77120

Quick assessment

Affected
Schneider Electric PowerLogic T300
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Schneider Electric PowerLogic T300是美国Schneider Electric公司的一款工业自动化控制设备。 Schneider Electric PowerLogic T300 2.9.8-5620及之前版本存在命令注入漏洞，该漏洞源于操作系统命令中使用的特殊元素中和不当，启用了SSH的已认证用户与操作系统控制台交互时，可能导致权限提升至root以及未授权执行管理功能。

CVSS 8.7 · High EPSS 0.67% · P51

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 1

VendorProduct Version RangeStatus
Schneider Electric PowerLogic T300 Versions 2.9.8-5620 and prior affected
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I. Basic Information for CVE-2026-77120

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability exists that could cause privilege escalation to root and unauthorized execution of administrative functions when an authenticated user with SSH enabled interacts with the operating system console that improperly processes user-controlled input.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Schneider Electric PowerLogic T300 命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Schneider Electric PowerLogic T300是美国Schneider Electric公司的一款工业自动化控制设备。 Schneider Electric PowerLogic T300 2.9.8-5620及之前版本存在命令注入漏洞，该漏洞源于操作系统命令中使用的特殊元素中和不当，启用了SSH的已认证用户与操作系统控制台交互时，可能导致权限提升至root以及未授权执行管理功能。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Schneider Electric PowerLogic T300 Versions 2.9.8-5620 and prior -

II. Public POCs for CVE-2026-77120

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-77120

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Vendor Advisories for CVE-2026-77120 (1)

Same Patch Batch · Schneider Electric · 2026-09-09 · 3 CVEs total

CVE-2026-8044 8.6 HIGH Schneider Electric EcoStruxure IT Data Center Expert 命令注入漏洞
CVE-2026-19233 8.6 HIGH Schneider Electric EcoStruxure IT Data Center Expert 服务端请求伪造漏洞

IV. Related Vulnerabilities

Same vendor: Schneider Electric
Same weakness: CWE-78