ICSA-22-132-07: Siemens SICAM P850 and SICAM P855

CISA's summary

Summary: Multiple vulnerabilities were identified in the webserver of SICAM P850 and SICAM P855 devices. These include unauthenticated access to web-interface functionality, missing HTTPS or impersonation as well as cross-site scripting related vulnerabilities. Siemens has released updates for the affected products and recommends to update to the latest versions.

Products, as the advisory lists them

DeSpy has not checked any unit, hardware revision or firmware.

Vulnerabilities in this advisory

• CVE-2022-29872 — CVE-2022-29872 · CWE-141

  Affected devices do not properly validate parameters of POST requests. This could allow an authenticated attacker to set the device to a denial of service state or to control the program counter and, thus, execute arbitrary code on the device.

• CVE-2022-29873 — CVE-2022-29873 · CWE-141

  Affected devices do not properly validate parameters of certain GET and POST requests. This could allow an unauthenticated attacker to set the device to a denial of service state or to control the program counter and, thus, execute arbitrary code on the device.

• CVE-2022-29874 — CVE-2022-29874 · CWE-319

  Affected devices do not encrypt web traffic with clients but communicate in cleartext via HTTP. This could allow an unauthenticated attacker to capture the traffic and interfere with the functionality of the device.

• CVE-2022-29876 — CVE-2022-29876 · CWE-79

  Affected devices do not properly handle the input of a GET request parameter. The provided argument is directly reflected in the web server response. This could allow an unauthenticated attacker to perform reflected XSS attacks.

• CVE-2022-29877 — CVE-2022-29877 · CWE-306

  Affected devices allow unauthenticated access to the web interface configuration area. This could allow an attacker to extract internal configuration details or to reconfigure network settings. However, the reconfigured settings cannot be activated unless the role of an authenticated administrator user.

• CVE-2022-29878 — CVE-2022-29878 · CWE-294

  Affected devices use a limited range for challenges that are sent during the unencrypted challenge-response communication. An unauthenticated attacker could capture a valid challenge-response pair generated by a legitimate user, and request the webpage repeatedly to wait for the same challenge to reappear for which the correct response is known. This could allow the attacker to access the management interface of the device.

• CVE-2022-29879 — CVE-2022-29879 · CWE-306

  The web based management interface of affected devices does not employ special access protection for certain internal developer views. This could allow authenticated users to access critical device information.

• CVE-2022-29880 — CVE-2022-29880 · CWE-79

  Affected devices do not properly validate input in the configuration interface. This could allow an authenticated attacker to place persistent XSS attacks to perform arbitrary actions in the name of a logged user which accesses the affected views.

• CVE-2022-29881 — CVE-2022-29881 · CWE-306

  The web based management interface of affected devices does not employ special access protection for certain internal developer views. This could allow unauthenticated users to extract internal configuration details.

• CVE-2022-29882 — CVE-2022-29882 · CWE-79

  Affected devices do not handle uploaded files correctly. An unauthenticated attacker could take advantage of this situation to store an XSS attack, which could - when a legitimate user accesses the error logs - perform arbitrary actions in the name of the user.

• CVE-2022-29883 — CVE-2022-29883 · CWE-287

  Affected devices do not restrict unauthenticated access to certain pages of the web interface. This could allow an attacker to delete log files without authentication.

Acknowledgments, as the advisory lists them

• Siemens ProductCERT: reporting this vulnerability to CISA.
• Michael Messner, Siemens Energy: reporting the vulnerabilities

The advisory's legal notice

Siemens Security Advisories are subject to the terms and conditions contained in Siemens' underlying license terms or other applicable agreements previously agreed to with Siemens (hereinafter "License Terms"). To the extent applicable to information, software or documentation made available in or through a Siemens Security Advisory, the Terms of Use of Siemens' Global Website (https://www.siemens.com/terms_of_use, hereinafter "Terms of Use"), in particular Sections 8-10 of the Terms of Use, shall apply additionally. In case of conflicts, the License Terms shall prevail over the Terms of Use.

Sources

• The advisory at cisa.gov
• The CSAF document (JSON)

DeSpy's copy of this version is dated 2026-09-28.