CVE-2022-43439Network attack vector

Authenticated code execution via unvalidated Language parameter

Published Nov 8, 2022 · Updated Dec 9, 2025

Improper input validation in Siemens SICAM Q100, P850, P855, and T devices allows remote authenticated users to execute arbitrary code. The HTTPS web interface on port 443 processes the Language parameter without proper validation. An authenticated session on Q100 before 2.50, P850 or P855 before 3.10, or T before 3.0 is required; exploitation can instead crash and automatically reboot the device.

CVSS severity9.9
Critical
EPSS probability1.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Siemens SICAM Q100, P850, P855, and T devices allows remote authenticated users to execute arbitrary code. The HTTPS web interface on port 443 processes the Language parameter without proper validation. An authenticated session on Q100 before 2.50, P850 or P855 before 3.10, or T before 3.0 is required; exploitation can instead crash and automatically reboot the device.

The record

CVE
CVE-2022-43439
Published
Nov 8, 2022
Updated
Dec 9, 2025
Vendor
Siemens
Product
SICAM T
Classifications
CWE-20, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 8, 2022CVE publishedPublication date reported by the CVE source.
  2. Dec 9, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <V3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Siemens · SICAM Tversion=0 <V3.0
Siemens · SICAM Q100version=0 <V2.50
Siemens · SICAM P850version=All versions < V3.10
Siemens · SICAM P855version=All versions < V3.10

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.9Siemens ProductCERTCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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