CVE-2023-42796

HighCVSS 8.8/10Last modified Jun 17, 2026

Description

A vulnerability has been identified in CP-8031 MASTER MODULE (All versions < CPCI85 V05.11), CP-8050 MASTER MODULE (All versions < CPCI85 V05.11). The web server of affected devices fails to properly sanitize user input for the /sicweb-ajax/tmproot/ endpoint. This could allow an authenticated remote attacker to traverse directories on the system and download arbitrary files. By exploring active session IDs, the vulnerability could potentially be leveraged to escalate privileges to the administrator role.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-22

Affected software

Vendor	Product	Versions
Siemens	CP-8031 MASTER MODULE	All versions < CPCI85 V05.11
Siemens	CP-8050 MASTER MODULE	All versions < CPCI85 V05.11

References

https://cert-portal.siemens.com/productcert/pdf/ssa-770890.pdfPatch, Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-770890.pdfPatch, Vendor Advisory

Timeline

Published: Oct 10, 2023
Last modified: Jun 17, 2026
NVD status: Modified

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