CVE-2022-43546Network attack vector

Authenticated code execution via malformed EndTime parameter

Published Nov 8, 2022 · Updated Oct 21, 2024

Improper input validation in Siemens SICAM Q100, P850, and P855 firmware allows remote authenticated users to execute code or reboot devices. The HTTPS web interface on port 443 processes an attacker-controlled EndTime request parameter without proper validation, allowing malformed values to reach unsafe parsing logic. A valid authenticated session is required; successful exploitation can run arbitrary code on the appliance or crash it and trigger an automatic reboot.

CVSS severity9.9
Critical
EPSS probability1.63%
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, and P855 firmware allows remote authenticated users to execute code or reboot devices. The HTTPS web interface on port 443 processes an attacker-controlled EndTime request parameter without proper validation, allowing malformed values to reach unsafe parsing logic. A valid authenticated session is required; successful exploitation can run arbitrary code on the appliance or crash it and trigger an automatic reboot.

The record

CVE
CVE-2022-43546
Published
Nov 8, 2022
Updated
Oct 21, 2024
Vendor
Siemens
Product
SICAM Q100
Classifications
CWE-20
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 8, 2022CVE publishedPublication date reported by the CVE source.
  2. Oct 21, 2024Record 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 <2.50
  2. Affected versionversion=All versions < V2.50

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Siemens · SICAM Q100version=0 <2.50; version=All versions < V2.50
Siemens · SICAM P850version=0 <3.10; version=All versions < V3.10
Siemens · SICAM P855version=0 <3.10; version=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 AGCVSS: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

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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