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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.

CWE-78：存在“操作系统命令注入”漏洞（即用于操作系统命令的专用元素中和不当）。当启用了 SSH 的已认证用户与操作系统控制台交互时，如果控制台未能正确处理用户可控的输入，可能会导致权限提升至 root，并允许非授权执行管理功能。

CVSS 8.7 · High

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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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

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

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III. Intelligence Information for CVE-2026-77120

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Other References for CVE-2026-77120 (1)

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

CVE-2026-8044 8.6 HIGH CWE-88: 特权账户下备份配置参数命令注入
CVE-2026-19233 8.6 HIGH CWE-918：服务器请求伪造（SSRF）漏洞

IV. Related Vulnerabilities

Same vendor: Schneider Electric
Same weakness: CWE-78

V. Comments for CVE-2026-77120

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