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CVE-2026-27867— CROSS-SITE SCRIPTING (XSS) VIA THE CMDCOOKIE PARAMETER REGESTA SMART HD-PLC OF TELDAT

Quick assessment

Affected
Teldat Regesta Smart HD-PLC - TLDPH16D2
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.

具有通过网络访问 Teldat 的 Regesta Smart HD-PLC 权限的攻击者（在此场景中需要执行注册操作），如果该设备运行的是存在漏洞的固件版本，则可以通过向 页面中的参数 注入特定的恶意载荷，从而引发跨站脚本攻击（XSS）。该漏洞影响以下型号的 Regesta Smart HD-PLC 设备： 型号：TLDPH16D2 受影响固件版本：11.02.06.00.02

CVSS 4.8 · Medium EPSS 0.37% · P30

Affected Version Matrix 2

VendorProduct Version RangeStatus
Teldat Regesta Smart HD-PLC - TLDPH16D2 11.02.06.00.02 affected
11.02.06.00.03 unaffected
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I. Basic Information for CVE-2026-27867

Vulnerability Information
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Vulnerability Title
CROSS-SITE SCRIPTING (XSS) VIA THE CMDCOOKIE PARAMETER REGESTA SMART HD-PLC OF TELDAT
Source: CVE Program / CVE List V5
Vulnerability Description
An attacker with access via network to the Regesta Smart HD-PLC of the provider Teldat (in this case, registration action is required) who has the vulnerable firmware version could inject a specific payload via the parameter "cmdcookie" withing the /upgrade/index.html resulting in to a Cross-Site Scripting (XSS). This issue affects Regesta Smart HD-PLC - TLDPH16D2:  11.02.06.00.02
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Teldat Regesta Smart HD-PLC - TLDPH16D2 11.02.06.00.02 -

II. Public POCs for CVE-2026-27867

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III. Intelligence Information for CVE-2026-27867

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Security Blog Posts for CVE-2026-27867 (2)

Vendor Pages for CVE-2026-27867 (2)

Other References for CVE-2026-27867 (1)

IV. Related Vulnerabilities

Same product: Regesta Smart HD-PLC - TLDPH16D2
Same vendor: Teldat
Same weakness: CWE-79